ref: 11bbad7372539841811bffad257e425283ecc79d
dir: /external/glfw/src/win32_window.c/
//========================================================================
// GLFW 3.3 Win32 - www.glfw.org
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2019 Camilla Löwy <elmindreda@glfw.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
// Please use C89 style variable declarations in this file because VS 2010
//========================================================================
#include "internal.h"
#include <limits.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include <windowsx.h>
#include <shellapi.h>
// Returns the window style for the specified window
//
static DWORD getWindowStyle(const _GLFWwindow* window)
{
DWORD style = WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
if (window->monitor)
style |= WS_POPUP;
else
{
style |= WS_SYSMENU | WS_MINIMIZEBOX;
if (window->decorated)
{
style |= WS_CAPTION;
if (window->resizable)
style |= WS_MAXIMIZEBOX | WS_THICKFRAME;
}
else
style |= WS_POPUP;
}
return style;
}
// Returns the extended window style for the specified window
//
static DWORD getWindowExStyle(const _GLFWwindow* window)
{
DWORD style = WS_EX_APPWINDOW;
if (window->monitor || window->floating)
style |= WS_EX_TOPMOST;
return style;
}
// Returns the image whose area most closely matches the desired one
//
static const GLFWimage* chooseImage(int count, const GLFWimage* images,
int width, int height)
{
int i, leastDiff = INT_MAX;
const GLFWimage* closest = NULL;
for (i = 0; i < count; i++)
{
const int currDiff = abs(images[i].width * images[i].height -
width * height);
if (currDiff < leastDiff)
{
closest = images + i;
leastDiff = currDiff;
}
}
return closest;
}
// Creates an RGBA icon or cursor
//
static HICON createIcon(const GLFWimage* image,
int xhot, int yhot, GLFWbool icon)
{
int i;
HDC dc;
HICON handle;
HBITMAP color, mask;
BITMAPV5HEADER bi;
ICONINFO ii;
unsigned char* target = NULL;
unsigned char* source = image->pixels;
ZeroMemory(&bi, sizeof(bi));
bi.bV5Size = sizeof(bi);
bi.bV5Width = image->width;
bi.bV5Height = -image->height;
bi.bV5Planes = 1;
bi.bV5BitCount = 32;
bi.bV5Compression = BI_BITFIELDS;
bi.bV5RedMask = 0x00ff0000;
bi.bV5GreenMask = 0x0000ff00;
bi.bV5BlueMask = 0x000000ff;
bi.bV5AlphaMask = 0xff000000;
dc = GetDC(NULL);
color = CreateDIBSection(dc,
(BITMAPINFO*) &bi,
DIB_RGB_COLORS,
(void**) &target,
NULL,
(DWORD) 0);
ReleaseDC(NULL, dc);
if (!color)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create RGBA bitmap");
return NULL;
}
mask = CreateBitmap(image->width, image->height, 1, 1, NULL);
if (!mask)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create mask bitmap");
DeleteObject(color);
return NULL;
}
for (i = 0; i < image->width * image->height; i++)
{
target[0] = source[2];
target[1] = source[1];
target[2] = source[0];
target[3] = source[3];
target += 4;
source += 4;
}
ZeroMemory(&ii, sizeof(ii));
ii.fIcon = icon;
ii.xHotspot = xhot;
ii.yHotspot = yhot;
ii.hbmMask = mask;
ii.hbmColor = color;
handle = CreateIconIndirect(&ii);
DeleteObject(color);
DeleteObject(mask);
if (!handle)
{
if (icon)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create icon");
}
else
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create cursor");
}
}
return handle;
}
// Translate content area size to full window size according to styles and DPI
//
static void getFullWindowSize(DWORD style, DWORD exStyle,
int contentWidth, int contentHeight,
int* fullWidth, int* fullHeight,
UINT dpi)
{
RECT rect = { 0, 0, contentWidth, contentHeight };
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
AdjustWindowRectExForDpi(&rect, style, FALSE, exStyle, dpi);
else
AdjustWindowRectEx(&rect, style, FALSE, exStyle);
*fullWidth = rect.right - rect.left;
*fullHeight = rect.bottom - rect.top;
}
// Enforce the content area aspect ratio based on which edge is being dragged
//
static void applyAspectRatio(_GLFWwindow* window, int edge, RECT* area)
{
int xoff, yoff;
UINT dpi = USER_DEFAULT_SCREEN_DPI;
const float ratio = (float) window->numer / (float) window->denom;
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
dpi = GetDpiForWindow(window->win32.handle);
getFullWindowSize(getWindowStyle(window), getWindowExStyle(window),
0, 0, &xoff, &yoff, dpi);
if (edge == WMSZ_LEFT || edge == WMSZ_BOTTOMLEFT ||
edge == WMSZ_RIGHT || edge == WMSZ_BOTTOMRIGHT)
{
area->bottom = area->top + yoff +
(int) ((area->right - area->left - xoff) / ratio);
}
else if (edge == WMSZ_TOPLEFT || edge == WMSZ_TOPRIGHT)
{
area->top = area->bottom - yoff -
(int) ((area->right - area->left - xoff) / ratio);
}
else if (edge == WMSZ_TOP || edge == WMSZ_BOTTOM)
{
area->right = area->left + xoff +
(int) ((area->bottom - area->top - yoff) * ratio);
}
}
// Updates the cursor image according to its cursor mode
//
static void updateCursorImage(_GLFWwindow* window)
{
if (window->cursorMode == GLFW_CURSOR_NORMAL)
{
if (window->cursor)
SetCursor(window->cursor->win32.handle);
else
SetCursor(LoadCursorW(NULL, IDC_ARROW));
}
else
SetCursor(NULL);
}
// Updates the cursor clip rect
//
static void updateClipRect(_GLFWwindow* window)
{
if (window)
{
RECT clipRect;
GetClientRect(window->win32.handle, &clipRect);
ClientToScreen(window->win32.handle, (POINT*) &clipRect.left);
ClientToScreen(window->win32.handle, (POINT*) &clipRect.right);
ClipCursor(&clipRect);
}
else
ClipCursor(NULL);
}
// Enables WM_INPUT messages for the mouse for the specified window
//
static void enableRawMouseMotion(_GLFWwindow* window)
{
const RAWINPUTDEVICE rid = { 0x01, 0x02, 0, window->win32.handle };
if (!RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to register raw input device");
}
}
// Disables WM_INPUT messages for the mouse
//
static void disableRawMouseMotion(_GLFWwindow* window)
{
const RAWINPUTDEVICE rid = { 0x01, 0x02, RIDEV_REMOVE, NULL };
if (!RegisterRawInputDevices(&rid, 1, sizeof(rid)))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to remove raw input device");
}
}
// Apply disabled cursor mode to a focused window
//
static void disableCursor(_GLFWwindow* window)
{
_glfw.win32.disabledCursorWindow = window;
_glfwPlatformGetCursorPos(window,
&_glfw.win32.restoreCursorPosX,
&_glfw.win32.restoreCursorPosY);
updateCursorImage(window);
_glfwCenterCursorInContentArea(window);
updateClipRect(window);
if (window->rawMouseMotion)
enableRawMouseMotion(window);
}
// Exit disabled cursor mode for the specified window
//
static void enableCursor(_GLFWwindow* window)
{
if (window->rawMouseMotion)
disableRawMouseMotion(window);
_glfw.win32.disabledCursorWindow = NULL;
updateClipRect(NULL);
_glfwPlatformSetCursorPos(window,
_glfw.win32.restoreCursorPosX,
_glfw.win32.restoreCursorPosY);
updateCursorImage(window);
}
// Returns whether the cursor is in the content area of the specified window
//
static GLFWbool cursorInContentArea(_GLFWwindow* window)
{
RECT area;
POINT pos;
if (!GetCursorPos(&pos))
return GLFW_FALSE;
if (WindowFromPoint(pos) != window->win32.handle)
return GLFW_FALSE;
GetClientRect(window->win32.handle, &area);
ClientToScreen(window->win32.handle, (POINT*) &area.left);
ClientToScreen(window->win32.handle, (POINT*) &area.right);
return PtInRect(&area, pos);
}
// Update native window styles to match attributes
//
static void updateWindowStyles(const _GLFWwindow* window)
{
RECT rect;
DWORD style = GetWindowLongW(window->win32.handle, GWL_STYLE);
style &= ~(WS_OVERLAPPEDWINDOW | WS_POPUP);
style |= getWindowStyle(window);
GetClientRect(window->win32.handle, &rect);
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, style, FALSE,
getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
AdjustWindowRectEx(&rect, style, FALSE, getWindowExStyle(window));
ClientToScreen(window->win32.handle, (POINT*) &rect.left);
ClientToScreen(window->win32.handle, (POINT*) &rect.right);
SetWindowLongW(window->win32.handle, GWL_STYLE, style);
SetWindowPos(window->win32.handle, HWND_TOP,
rect.left, rect.top,
rect.right - rect.left, rect.bottom - rect.top,
SWP_FRAMECHANGED | SWP_NOACTIVATE | SWP_NOZORDER);
}
// Update window framebuffer transparency
//
static void updateFramebufferTransparency(const _GLFWwindow* window)
{
BOOL enabled;
if (!IsWindowsVistaOrGreater())
return;
if (SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled)
{
HRGN region = CreateRectRgn(0, 0, -1, -1);
DWM_BLURBEHIND bb = {0};
bb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION;
bb.hRgnBlur = region;
bb.fEnable = TRUE;
if (SUCCEEDED(DwmEnableBlurBehindWindow(window->win32.handle, &bb)))
{
// Decorated windows don't repaint the transparent background
// leaving a trail behind animations
// HACK: Making the window layered with a transparency color key
// seems to fix this. Normally, when specifying
// a transparency color key to be used when composing the
// layered window, all pixels painted by the window in this
// color will be transparent. That doesn't seem to be the
// case anymore, at least when used with blur behind window
// plus negative region.
LONG exStyle = GetWindowLongW(window->win32.handle, GWL_EXSTYLE);
exStyle |= WS_EX_LAYERED;
SetWindowLongW(window->win32.handle, GWL_EXSTYLE, exStyle);
// Using a color key not equal to black to fix the trailing
// issue. When set to black, something is making the hit test
// not resize with the window frame.
SetLayeredWindowAttributes(window->win32.handle,
RGB(255, 0, 255), 255, LWA_COLORKEY);
}
DeleteObject(region);
}
else
{
LONG exStyle = GetWindowLongW(window->win32.handle, GWL_EXSTYLE);
exStyle &= ~WS_EX_LAYERED;
SetWindowLongW(window->win32.handle, GWL_EXSTYLE, exStyle);
RedrawWindow(window->win32.handle, NULL, NULL,
RDW_ERASE | RDW_INVALIDATE | RDW_FRAME);
}
}
// Retrieves and translates modifier keys
//
static int getKeyMods(void)
{
int mods = 0;
if (GetKeyState(VK_SHIFT) & 0x8000)
mods |= GLFW_MOD_SHIFT;
if (GetKeyState(VK_CONTROL) & 0x8000)
mods |= GLFW_MOD_CONTROL;
if (GetKeyState(VK_MENU) & 0x8000)
mods |= GLFW_MOD_ALT;
if ((GetKeyState(VK_LWIN) | GetKeyState(VK_RWIN)) & 0x8000)
mods |= GLFW_MOD_SUPER;
if (GetKeyState(VK_CAPITAL) & 1)
mods |= GLFW_MOD_CAPS_LOCK;
if (GetKeyState(VK_NUMLOCK) & 1)
mods |= GLFW_MOD_NUM_LOCK;
return mods;
}
static void fitToMonitor(_GLFWwindow* window)
{
MONITORINFO mi = { sizeof(mi) };
GetMonitorInfo(window->monitor->win32.handle, &mi);
SetWindowPos(window->win32.handle, HWND_TOPMOST,
mi.rcMonitor.left,
mi.rcMonitor.top,
mi.rcMonitor.right - mi.rcMonitor.left,
mi.rcMonitor.bottom - mi.rcMonitor.top,
SWP_NOZORDER | SWP_NOACTIVATE | SWP_NOCOPYBITS);
}
// Make the specified window and its video mode active on its monitor
//
static void acquireMonitor(_GLFWwindow* window)
{
if (!_glfw.win32.acquiredMonitorCount)
{
SetThreadExecutionState(ES_CONTINUOUS | ES_DISPLAY_REQUIRED);
// HACK: When mouse trails are enabled the cursor becomes invisible when
// the OpenGL ICD switches to page flipping
if (IsWindowsXPOrGreater())
{
SystemParametersInfo(SPI_GETMOUSETRAILS, 0, &_glfw.win32.mouseTrailSize, 0);
SystemParametersInfo(SPI_SETMOUSETRAILS, 0, 0, 0);
}
}
if (!window->monitor->window)
_glfw.win32.acquiredMonitorCount++;
_glfwSetVideoModeWin32(window->monitor, &window->videoMode);
_glfwInputMonitorWindow(window->monitor, window);
}
// Remove the window and restore the original video mode
//
static void releaseMonitor(_GLFWwindow* window)
{
if (window->monitor->window != window)
return;
_glfw.win32.acquiredMonitorCount--;
if (!_glfw.win32.acquiredMonitorCount)
{
SetThreadExecutionState(ES_CONTINUOUS);
// HACK: Restore mouse trail length saved in acquireMonitor
if (IsWindowsXPOrGreater())
SystemParametersInfo(SPI_SETMOUSETRAILS, _glfw.win32.mouseTrailSize, 0, 0);
}
_glfwInputMonitorWindow(window->monitor, NULL);
_glfwRestoreVideoModeWin32(window->monitor);
}
// Window callback function (handles window messages)
//
static LRESULT CALLBACK windowProc(HWND hWnd, UINT uMsg,
WPARAM wParam, LPARAM lParam)
{
_GLFWwindow* window = GetPropW(hWnd, L"GLFW");
if (!window)
{
// This is the message handling for the hidden helper window
// and for a regular window during its initial creation
switch (uMsg)
{
case WM_NCCREATE:
{
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
EnableNonClientDpiScaling(hWnd);
break;
}
case WM_DISPLAYCHANGE:
_glfwPollMonitorsWin32();
break;
case WM_DEVICECHANGE:
{
if (wParam == DBT_DEVICEARRIVAL)
{
DEV_BROADCAST_HDR* dbh = (DEV_BROADCAST_HDR*) lParam;
if (dbh && dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
_glfwDetectJoystickConnectionWin32();
}
else if (wParam == DBT_DEVICEREMOVECOMPLETE)
{
DEV_BROADCAST_HDR* dbh = (DEV_BROADCAST_HDR*) lParam;
if (dbh && dbh->dbch_devicetype == DBT_DEVTYP_DEVICEINTERFACE)
_glfwDetectJoystickDisconnectionWin32();
}
break;
}
}
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
switch (uMsg)
{
case WM_MOUSEACTIVATE:
{
// HACK: Postpone cursor disabling when the window was activated by
// clicking a caption button
if (HIWORD(lParam) == WM_LBUTTONDOWN)
{
if (LOWORD(lParam) != HTCLIENT)
window->win32.frameAction = GLFW_TRUE;
}
break;
}
case WM_CAPTURECHANGED:
{
// HACK: Disable the cursor once the caption button action has been
// completed or cancelled
if (lParam == 0 && window->win32.frameAction)
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
window->win32.frameAction = GLFW_FALSE;
}
break;
}
case WM_SETFOCUS:
{
_glfwInputWindowFocus(window, GLFW_TRUE);
// HACK: Do not disable cursor while the user is interacting with
// a caption button
if (window->win32.frameAction)
break;
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
return 0;
}
case WM_KILLFOCUS:
{
if (window->cursorMode == GLFW_CURSOR_DISABLED)
enableCursor(window);
if (window->monitor && window->autoIconify)
_glfwPlatformIconifyWindow(window);
_glfwInputWindowFocus(window, GLFW_FALSE);
return 0;
}
case WM_SYSCOMMAND:
{
switch (wParam & 0xfff0)
{
case SC_SCREENSAVE:
case SC_MONITORPOWER:
{
if (window->monitor)
{
// We are running in full screen mode, so disallow
// screen saver and screen blanking
return 0;
}
else
break;
}
// User trying to access application menu using ALT?
case SC_KEYMENU:
return 0;
}
break;
}
case WM_CLOSE:
{
_glfwInputWindowCloseRequest(window);
return 0;
}
case WM_INPUTLANGCHANGE:
{
_glfwUpdateKeyNamesWin32();
break;
}
case WM_CHAR:
case WM_SYSCHAR:
case WM_UNICHAR:
{
const GLFWbool plain = (uMsg != WM_SYSCHAR);
if (uMsg == WM_UNICHAR && wParam == UNICODE_NOCHAR)
{
// WM_UNICHAR is not sent by Windows, but is sent by some
// third-party input method engine
// Returning TRUE here announces support for this message
return TRUE;
}
_glfwInputChar(window, (unsigned int) wParam, getKeyMods(), plain);
return 0;
}
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_KEYUP:
case WM_SYSKEYUP:
{
int key, scancode;
const int action = (HIWORD(lParam) & KF_UP) ? GLFW_RELEASE : GLFW_PRESS;
const int mods = getKeyMods();
scancode = (HIWORD(lParam) & (KF_EXTENDED | 0xff));
if (!scancode)
{
// NOTE: Some synthetic key messages have a scancode of zero
// HACK: Map the virtual key back to a usable scancode
scancode = MapVirtualKeyW((UINT) wParam, MAPVK_VK_TO_VSC);
}
key = _glfw.win32.keycodes[scancode];
// The Ctrl keys require special handling
if (wParam == VK_CONTROL)
{
if (HIWORD(lParam) & KF_EXTENDED)
{
// Right side keys have the extended key bit set
key = GLFW_KEY_RIGHT_CONTROL;
}
else
{
// NOTE: Alt Gr sends Left Ctrl followed by Right Alt
// HACK: We only want one event for Alt Gr, so if we detect
// this sequence we discard this Left Ctrl message now
// and later report Right Alt normally
MSG next;
const DWORD time = GetMessageTime();
if (PeekMessageW(&next, NULL, 0, 0, PM_NOREMOVE))
{
if (next.message == WM_KEYDOWN ||
next.message == WM_SYSKEYDOWN ||
next.message == WM_KEYUP ||
next.message == WM_SYSKEYUP)
{
if (next.wParam == VK_MENU &&
(HIWORD(next.lParam) & KF_EXTENDED) &&
next.time == time)
{
// Next message is Right Alt down so discard this
break;
}
}
}
// This is a regular Left Ctrl message
key = GLFW_KEY_LEFT_CONTROL;
}
}
else if (wParam == VK_PROCESSKEY)
{
// IME notifies that keys have been filtered by setting the
// virtual key-code to VK_PROCESSKEY
break;
}
if (action == GLFW_RELEASE && wParam == VK_SHIFT)
{
// HACK: Release both Shift keys on Shift up event, as when both
// are pressed the first release does not emit any event
// NOTE: The other half of this is in _glfwPlatformPollEvents
_glfwInputKey(window, GLFW_KEY_LEFT_SHIFT, scancode, action, mods);
_glfwInputKey(window, GLFW_KEY_RIGHT_SHIFT, scancode, action, mods);
}
else if (wParam == VK_SNAPSHOT)
{
// HACK: Key down is not reported for the Print Screen key
_glfwInputKey(window, key, scancode, GLFW_PRESS, mods);
_glfwInputKey(window, key, scancode, GLFW_RELEASE, mods);
}
else
_glfwInputKey(window, key, scancode, action, mods);
break;
}
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_XBUTTONDOWN:
case WM_LBUTTONUP:
case WM_RBUTTONUP:
case WM_MBUTTONUP:
case WM_XBUTTONUP:
{
int i, button, action;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_LBUTTONUP)
button = GLFW_MOUSE_BUTTON_LEFT;
else if (uMsg == WM_RBUTTONDOWN || uMsg == WM_RBUTTONUP)
button = GLFW_MOUSE_BUTTON_RIGHT;
else if (uMsg == WM_MBUTTONDOWN || uMsg == WM_MBUTTONUP)
button = GLFW_MOUSE_BUTTON_MIDDLE;
else if (GET_XBUTTON_WPARAM(wParam) == XBUTTON1)
button = GLFW_MOUSE_BUTTON_4;
else
button = GLFW_MOUSE_BUTTON_5;
if (uMsg == WM_LBUTTONDOWN || uMsg == WM_RBUTTONDOWN ||
uMsg == WM_MBUTTONDOWN || uMsg == WM_XBUTTONDOWN)
{
action = GLFW_PRESS;
}
else
action = GLFW_RELEASE;
for (i = 0; i <= GLFW_MOUSE_BUTTON_LAST; i++)
{
if (window->mouseButtons[i] == GLFW_PRESS)
break;
}
if (i > GLFW_MOUSE_BUTTON_LAST)
SetCapture(hWnd);
_glfwInputMouseClick(window, button, action, getKeyMods());
for (i = 0; i <= GLFW_MOUSE_BUTTON_LAST; i++)
{
if (window->mouseButtons[i] == GLFW_PRESS)
break;
}
if (i > GLFW_MOUSE_BUTTON_LAST)
ReleaseCapture();
if (uMsg == WM_XBUTTONDOWN || uMsg == WM_XBUTTONUP)
return TRUE;
return 0;
}
case WM_MOUSEMOVE:
{
const int x = GET_X_LPARAM(lParam);
const int y = GET_Y_LPARAM(lParam);
if (!window->win32.cursorTracked)
{
TRACKMOUSEEVENT tme;
ZeroMemory(&tme, sizeof(tme));
tme.cbSize = sizeof(tme);
tme.dwFlags = TME_LEAVE;
tme.hwndTrack = window->win32.handle;
TrackMouseEvent(&tme);
window->win32.cursorTracked = GLFW_TRUE;
_glfwInputCursorEnter(window, GLFW_TRUE);
}
if (window->cursorMode == GLFW_CURSOR_DISABLED)
{
const int dx = x - window->win32.lastCursorPosX;
const int dy = y - window->win32.lastCursorPosY;
if (_glfw.win32.disabledCursorWindow != window)
break;
if (window->rawMouseMotion)
break;
_glfwInputCursorPos(window,
window->virtualCursorPosX + dx,
window->virtualCursorPosY + dy);
}
else
_glfwInputCursorPos(window, x, y);
window->win32.lastCursorPosX = x;
window->win32.lastCursorPosY = y;
return 0;
}
case WM_INPUT:
{
UINT size = 0;
HRAWINPUT ri = (HRAWINPUT) lParam;
RAWINPUT* data = NULL;
int dx, dy;
if (_glfw.win32.disabledCursorWindow != window)
break;
if (!window->rawMouseMotion)
break;
GetRawInputData(ri, RID_INPUT, NULL, &size, sizeof(RAWINPUTHEADER));
if (size > (UINT) _glfw.win32.rawInputSize)
{
free(_glfw.win32.rawInput);
_glfw.win32.rawInput = calloc(size, 1);
_glfw.win32.rawInputSize = size;
}
size = _glfw.win32.rawInputSize;
if (GetRawInputData(ri, RID_INPUT,
_glfw.win32.rawInput, &size,
sizeof(RAWINPUTHEADER)) == (UINT) -1)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to retrieve raw input data");
break;
}
data = _glfw.win32.rawInput;
if (data->data.mouse.usFlags & MOUSE_MOVE_ABSOLUTE)
{
dx = data->data.mouse.lLastX - window->win32.lastCursorPosX;
dy = data->data.mouse.lLastY - window->win32.lastCursorPosY;
}
else
{
dx = data->data.mouse.lLastX;
dy = data->data.mouse.lLastY;
}
_glfwInputCursorPos(window,
window->virtualCursorPosX + dx,
window->virtualCursorPosY + dy);
window->win32.lastCursorPosX += dx;
window->win32.lastCursorPosY += dy;
break;
}
case WM_MOUSELEAVE:
{
window->win32.cursorTracked = GLFW_FALSE;
_glfwInputCursorEnter(window, GLFW_FALSE);
return 0;
}
case WM_MOUSEWHEEL:
{
_glfwInputScroll(window, 0.0, (SHORT) HIWORD(wParam) / (double) WHEEL_DELTA);
return 0;
}
case WM_MOUSEHWHEEL:
{
// This message is only sent on Windows Vista and later
// NOTE: The X-axis is inverted for consistency with macOS and X11
_glfwInputScroll(window, -((SHORT) HIWORD(wParam) / (double) WHEEL_DELTA), 0.0);
return 0;
}
case WM_ENTERSIZEMOVE:
case WM_ENTERMENULOOP:
{
if (window->win32.frameAction)
break;
// HACK: Enable the cursor while the user is moving or
// resizing the window or using the window menu
if (window->cursorMode == GLFW_CURSOR_DISABLED)
enableCursor(window);
break;
}
case WM_EXITSIZEMOVE:
case WM_EXITMENULOOP:
{
if (window->win32.frameAction)
break;
// HACK: Disable the cursor once the user is done moving or
// resizing the window or using the menu
if (window->cursorMode == GLFW_CURSOR_DISABLED)
disableCursor(window);
break;
}
case WM_SIZE:
{
const GLFWbool iconified = wParam == SIZE_MINIMIZED;
const GLFWbool maximized = wParam == SIZE_MAXIMIZED ||
(window->win32.maximized &&
wParam != SIZE_RESTORED);
if (_glfw.win32.disabledCursorWindow == window)
updateClipRect(window);
if (window->win32.iconified != iconified)
_glfwInputWindowIconify(window, iconified);
if (window->win32.maximized != maximized)
_glfwInputWindowMaximize(window, maximized);
_glfwInputFramebufferSize(window, LOWORD(lParam), HIWORD(lParam));
_glfwInputWindowSize(window, LOWORD(lParam), HIWORD(lParam));
if (window->monitor && window->win32.iconified != iconified)
{
if (iconified)
releaseMonitor(window);
else
{
acquireMonitor(window);
fitToMonitor(window);
}
}
window->win32.iconified = iconified;
window->win32.maximized = maximized;
return 0;
}
case WM_MOVE:
{
if (_glfw.win32.disabledCursorWindow == window)
updateClipRect(window);
// NOTE: This cannot use LOWORD/HIWORD recommended by MSDN, as
// those macros do not handle negative window positions correctly
_glfwInputWindowPos(window,
GET_X_LPARAM(lParam),
GET_Y_LPARAM(lParam));
return 0;
}
case WM_SIZING:
{
if (window->numer == GLFW_DONT_CARE ||
window->denom == GLFW_DONT_CARE)
{
break;
}
applyAspectRatio(window, (int) wParam, (RECT*) lParam);
return TRUE;
}
case WM_GETMINMAXINFO:
{
int xoff, yoff;
UINT dpi = USER_DEFAULT_SCREEN_DPI;
MINMAXINFO* mmi = (MINMAXINFO*) lParam;
if (window->monitor)
break;
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
dpi = GetDpiForWindow(window->win32.handle);
getFullWindowSize(getWindowStyle(window), getWindowExStyle(window),
0, 0, &xoff, &yoff, dpi);
if (window->minwidth != GLFW_DONT_CARE &&
window->minheight != GLFW_DONT_CARE)
{
mmi->ptMinTrackSize.x = window->minwidth + xoff;
mmi->ptMinTrackSize.y = window->minheight + yoff;
}
if (window->maxwidth != GLFW_DONT_CARE &&
window->maxheight != GLFW_DONT_CARE)
{
mmi->ptMaxTrackSize.x = window->maxwidth + xoff;
mmi->ptMaxTrackSize.y = window->maxheight + yoff;
}
if (!window->decorated)
{
MONITORINFO mi;
const HMONITOR mh = MonitorFromWindow(window->win32.handle,
MONITOR_DEFAULTTONEAREST);
ZeroMemory(&mi, sizeof(mi));
mi.cbSize = sizeof(mi);
GetMonitorInfo(mh, &mi);
mmi->ptMaxPosition.x = mi.rcWork.left - mi.rcMonitor.left;
mmi->ptMaxPosition.y = mi.rcWork.top - mi.rcMonitor.top;
mmi->ptMaxSize.x = mi.rcWork.right - mi.rcWork.left;
mmi->ptMaxSize.y = mi.rcWork.bottom - mi.rcWork.top;
}
return 0;
}
case WM_PAINT:
{
_glfwInputWindowDamage(window);
break;
}
case WM_ERASEBKGND:
{
return TRUE;
}
case WM_NCACTIVATE:
case WM_NCPAINT:
{
// Prevent title bar from being drawn after restoring a minimized
// undecorated window
if (!window->decorated)
return TRUE;
break;
}
case WM_DWMCOMPOSITIONCHANGED:
{
if (window->win32.transparent)
updateFramebufferTransparency(window);
return 0;
}
case WM_GETDPISCALEDSIZE:
{
if (window->win32.scaleToMonitor)
break;
// Adjust the window size to keep the content area size constant
if (_glfwIsWindows10CreatorsUpdateOrGreaterWin32())
{
RECT source = {0}, target = {0};
SIZE* size = (SIZE*) lParam;
AdjustWindowRectExForDpi(&source, getWindowStyle(window),
FALSE, getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
AdjustWindowRectExForDpi(&target, getWindowStyle(window),
FALSE, getWindowExStyle(window),
LOWORD(wParam));
size->cx += (target.right - target.left) -
(source.right - source.left);
size->cy += (target.bottom - target.top) -
(source.bottom - source.top);
return TRUE;
}
break;
}
case WM_DPICHANGED:
{
const float xscale = HIWORD(wParam) / (float) USER_DEFAULT_SCREEN_DPI;
const float yscale = LOWORD(wParam) / (float) USER_DEFAULT_SCREEN_DPI;
// Only apply the suggested size if the OS is new enough to have
// sent a WM_GETDPISCALEDSIZE before this
if (_glfwIsWindows10CreatorsUpdateOrGreaterWin32())
{
RECT* suggested = (RECT*) lParam;
SetWindowPos(window->win32.handle, HWND_TOP,
suggested->left,
suggested->top,
suggested->right - suggested->left,
suggested->bottom - suggested->top,
SWP_NOACTIVATE | SWP_NOZORDER);
}
_glfwInputWindowContentScale(window, xscale, yscale);
break;
}
case WM_SETCURSOR:
{
if (LOWORD(lParam) == HTCLIENT)
{
updateCursorImage(window);
return TRUE;
}
break;
}
case WM_DROPFILES:
{
HDROP drop = (HDROP) wParam;
POINT pt;
int i;
const int count = DragQueryFileW(drop, 0xffffffff, NULL, 0);
char** paths = calloc(count, sizeof(char*));
// Move the mouse to the position of the drop
DragQueryPoint(drop, &pt);
_glfwInputCursorPos(window, pt.x, pt.y);
for (i = 0; i < count; i++)
{
const UINT length = DragQueryFileW(drop, i, NULL, 0);
WCHAR* buffer = calloc((size_t) length + 1, sizeof(WCHAR));
DragQueryFileW(drop, i, buffer, length + 1);
paths[i] = _glfwCreateUTF8FromWideStringWin32(buffer);
free(buffer);
}
_glfwInputDrop(window, count, (const char**) paths);
for (i = 0; i < count; i++)
free(paths[i]);
free(paths);
DragFinish(drop);
return 0;
}
}
return DefWindowProcW(hWnd, uMsg, wParam, lParam);
}
// Creates the GLFW window
//
static int createNativeWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWfbconfig* fbconfig)
{
int xpos, ypos, fullWidth, fullHeight;
WCHAR* wideTitle;
DWORD style = getWindowStyle(window);
DWORD exStyle = getWindowExStyle(window);
if (window->monitor)
{
GLFWvidmode mode;
// NOTE: This window placement is temporary and approximate, as the
// correct position and size cannot be known until the monitor
// video mode has been picked in _glfwSetVideoModeWin32
_glfwPlatformGetMonitorPos(window->monitor, &xpos, &ypos);
_glfwPlatformGetVideoMode(window->monitor, &mode);
fullWidth = mode.width;
fullHeight = mode.height;
}
else
{
xpos = CW_USEDEFAULT;
ypos = CW_USEDEFAULT;
window->win32.maximized = wndconfig->maximized;
if (wndconfig->maximized)
style |= WS_MAXIMIZE;
getFullWindowSize(style, exStyle,
wndconfig->width, wndconfig->height,
&fullWidth, &fullHeight,
USER_DEFAULT_SCREEN_DPI);
}
wideTitle = _glfwCreateWideStringFromUTF8Win32(wndconfig->title);
if (!wideTitle)
return GLFW_FALSE;
window->win32.handle = CreateWindowExW(exStyle,
_GLFW_WNDCLASSNAME,
wideTitle,
style,
xpos, ypos,
fullWidth, fullHeight,
NULL, // No parent window
NULL, // No window menu
GetModuleHandleW(NULL),
NULL);
free(wideTitle);
if (!window->win32.handle)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create window");
return GLFW_FALSE;
}
SetPropW(window->win32.handle, L"GLFW", window);
if (IsWindows7OrGreater())
{
ChangeWindowMessageFilterEx(window->win32.handle,
WM_DROPFILES, MSGFLT_ALLOW, NULL);
ChangeWindowMessageFilterEx(window->win32.handle,
WM_COPYDATA, MSGFLT_ALLOW, NULL);
ChangeWindowMessageFilterEx(window->win32.handle,
WM_COPYGLOBALDATA, MSGFLT_ALLOW, NULL);
}
window->win32.scaleToMonitor = wndconfig->scaleToMonitor;
// Adjust window rect to account for DPI scaling of the window frame and
// (if enabled) DPI scaling of the content area
// This cannot be done until we know what monitor the window was placed on
if (!window->monitor)
{
RECT rect = { 0, 0, wndconfig->width, wndconfig->height };
WINDOWPLACEMENT wp = { sizeof(wp) };
if (wndconfig->scaleToMonitor)
{
float xscale, yscale;
_glfwPlatformGetWindowContentScale(window, &xscale, &yscale);
rect.right = (int) (rect.right * xscale);
rect.bottom = (int) (rect.bottom * yscale);
}
ClientToScreen(window->win32.handle, (POINT*) &rect.left);
ClientToScreen(window->win32.handle, (POINT*) &rect.right);
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, style, FALSE, exStyle,
GetDpiForWindow(window->win32.handle));
}
else
AdjustWindowRectEx(&rect, style, FALSE, exStyle);
// Only update the restored window rect as the window may be maximized
GetWindowPlacement(window->win32.handle, &wp);
wp.rcNormalPosition = rect;
wp.showCmd = SW_HIDE;
SetWindowPlacement(window->win32.handle, &wp);
}
DragAcceptFiles(window->win32.handle, TRUE);
if (fbconfig->transparent)
{
updateFramebufferTransparency(window);
window->win32.transparent = GLFW_TRUE;
}
return GLFW_TRUE;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW internal API //////
//////////////////////////////////////////////////////////////////////////
// Registers the GLFW window class
//
GLFWbool _glfwRegisterWindowClassWin32(void)
{
WNDCLASSEXW wc;
ZeroMemory(&wc, sizeof(wc));
wc.cbSize = sizeof(wc);
wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
wc.lpfnWndProc = (WNDPROC) windowProc;
wc.hInstance = GetModuleHandleW(NULL);
wc.hCursor = LoadCursorW(NULL, IDC_ARROW);
wc.lpszClassName = _GLFW_WNDCLASSNAME;
// Load user-provided icon if available
wc.hIcon = LoadImageW(GetModuleHandleW(NULL),
L"GLFW_ICON", IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
if (!wc.hIcon)
{
// No user-provided icon found, load default icon
wc.hIcon = LoadImageW(NULL,
IDI_APPLICATION, IMAGE_ICON,
0, 0, LR_DEFAULTSIZE | LR_SHARED);
}
if (!RegisterClassExW(&wc))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to register window class");
return GLFW_FALSE;
}
return GLFW_TRUE;
}
// Unregisters the GLFW window class
//
void _glfwUnregisterWindowClassWin32(void)
{
UnregisterClassW(_GLFW_WNDCLASSNAME, GetModuleHandleW(NULL));
}
//////////////////////////////////////////////////////////////////////////
////// GLFW platform API //////
//////////////////////////////////////////////////////////////////////////
int _glfwPlatformCreateWindow(_GLFWwindow* window,
const _GLFWwndconfig* wndconfig,
const _GLFWctxconfig* ctxconfig,
const _GLFWfbconfig* fbconfig)
{
if (!createNativeWindow(window, wndconfig, fbconfig))
return GLFW_FALSE;
if (ctxconfig->client != GLFW_NO_API)
{
if (ctxconfig->source == GLFW_NATIVE_CONTEXT_API)
{
if (!_glfwInitWGL())
return GLFW_FALSE;
if (!_glfwCreateContextWGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
else if (ctxconfig->source == GLFW_EGL_CONTEXT_API)
{
if (!_glfwInitEGL())
return GLFW_FALSE;
if (!_glfwCreateContextEGL(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
else if (ctxconfig->source == GLFW_OSMESA_CONTEXT_API)
{
if (!_glfwInitOSMesa())
return GLFW_FALSE;
if (!_glfwCreateContextOSMesa(window, ctxconfig, fbconfig))
return GLFW_FALSE;
}
}
if (window->monitor)
{
_glfwPlatformShowWindow(window);
_glfwPlatformFocusWindow(window);
acquireMonitor(window);
fitToMonitor(window);
}
return GLFW_TRUE;
}
void _glfwPlatformDestroyWindow(_GLFWwindow* window)
{
if (window->monitor)
releaseMonitor(window);
if (window->context.destroy)
window->context.destroy(window);
if (_glfw.win32.disabledCursorWindow == window)
_glfw.win32.disabledCursorWindow = NULL;
if (window->win32.handle)
{
RemovePropW(window->win32.handle, L"GLFW");
DestroyWindow(window->win32.handle);
window->win32.handle = NULL;
}
if (window->win32.bigIcon)
DestroyIcon(window->win32.bigIcon);
if (window->win32.smallIcon)
DestroyIcon(window->win32.smallIcon);
}
void _glfwPlatformSetWindowTitle(_GLFWwindow* window, const char* title)
{
WCHAR* wideTitle = _glfwCreateWideStringFromUTF8Win32(title);
if (!wideTitle)
return;
SetWindowTextW(window->win32.handle, wideTitle);
free(wideTitle);
}
void _glfwPlatformSetWindowIcon(_GLFWwindow* window,
int count, const GLFWimage* images)
{
HICON bigIcon = NULL, smallIcon = NULL;
if (count)
{
const GLFWimage* bigImage = chooseImage(count, images,
GetSystemMetrics(SM_CXICON),
GetSystemMetrics(SM_CYICON));
const GLFWimage* smallImage = chooseImage(count, images,
GetSystemMetrics(SM_CXSMICON),
GetSystemMetrics(SM_CYSMICON));
bigIcon = createIcon(bigImage, 0, 0, GLFW_TRUE);
smallIcon = createIcon(smallImage, 0, 0, GLFW_TRUE);
}
else
{
bigIcon = (HICON) GetClassLongPtrW(window->win32.handle, GCLP_HICON);
smallIcon = (HICON) GetClassLongPtrW(window->win32.handle, GCLP_HICONSM);
}
SendMessage(window->win32.handle, WM_SETICON, ICON_BIG, (LPARAM) bigIcon);
SendMessage(window->win32.handle, WM_SETICON, ICON_SMALL, (LPARAM) smallIcon);
if (window->win32.bigIcon)
DestroyIcon(window->win32.bigIcon);
if (window->win32.smallIcon)
DestroyIcon(window->win32.smallIcon);
if (count)
{
window->win32.bigIcon = bigIcon;
window->win32.smallIcon = smallIcon;
}
}
void _glfwPlatformGetWindowPos(_GLFWwindow* window, int* xpos, int* ypos)
{
POINT pos = { 0, 0 };
ClientToScreen(window->win32.handle, &pos);
if (xpos)
*xpos = pos.x;
if (ypos)
*ypos = pos.y;
}
void _glfwPlatformSetWindowPos(_GLFWwindow* window, int xpos, int ypos)
{
RECT rect = { xpos, ypos, xpos, ypos };
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
{
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
}
SetWindowPos(window->win32.handle, NULL, rect.left, rect.top, 0, 0,
SWP_NOACTIVATE | SWP_NOZORDER | SWP_NOSIZE);
}
void _glfwPlatformGetWindowSize(_GLFWwindow* window, int* width, int* height)
{
RECT area;
GetClientRect(window->win32.handle, &area);
if (width)
*width = area.right;
if (height)
*height = area.bottom;
}
void _glfwPlatformSetWindowSize(_GLFWwindow* window, int width, int height)
{
if (window->monitor)
{
if (window->monitor->window == window)
{
acquireMonitor(window);
fitToMonitor(window);
}
}
else
{
RECT rect = { 0, 0, width, height };
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
{
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
}
SetWindowPos(window->win32.handle, HWND_TOP,
0, 0, rect.right - rect.left, rect.bottom - rect.top,
SWP_NOACTIVATE | SWP_NOOWNERZORDER | SWP_NOMOVE | SWP_NOZORDER);
}
}
void _glfwPlatformSetWindowSizeLimits(_GLFWwindow* window,
int minwidth, int minheight,
int maxwidth, int maxheight)
{
RECT area;
if ((minwidth == GLFW_DONT_CARE || minheight == GLFW_DONT_CARE) &&
(maxwidth == GLFW_DONT_CARE || maxheight == GLFW_DONT_CARE))
{
return;
}
GetWindowRect(window->win32.handle, &area);
MoveWindow(window->win32.handle,
area.left, area.top,
area.right - area.left,
area.bottom - area.top, TRUE);
}
void _glfwPlatformSetWindowAspectRatio(_GLFWwindow* window, int numer, int denom)
{
RECT area;
if (numer == GLFW_DONT_CARE || denom == GLFW_DONT_CARE)
return;
GetWindowRect(window->win32.handle, &area);
applyAspectRatio(window, WMSZ_BOTTOMRIGHT, &area);
MoveWindow(window->win32.handle,
area.left, area.top,
area.right - area.left,
area.bottom - area.top, TRUE);
}
void _glfwPlatformGetFramebufferSize(_GLFWwindow* window, int* width, int* height)
{
_glfwPlatformGetWindowSize(window, width, height);
}
void _glfwPlatformGetWindowFrameSize(_GLFWwindow* window,
int* left, int* top,
int* right, int* bottom)
{
RECT rect;
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
SetRect(&rect, 0, 0, width, height);
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
{
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
}
if (left)
*left = -rect.left;
if (top)
*top = -rect.top;
if (right)
*right = rect.right - width;
if (bottom)
*bottom = rect.bottom - height;
}
void _glfwPlatformGetWindowContentScale(_GLFWwindow* window,
float* xscale, float* yscale)
{
const HANDLE handle = MonitorFromWindow(window->win32.handle,
MONITOR_DEFAULTTONEAREST);
_glfwGetMonitorContentScaleWin32(handle, xscale, yscale);
}
void _glfwPlatformIconifyWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_MINIMIZE);
}
void _glfwPlatformRestoreWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_RESTORE);
}
void _glfwPlatformMaximizeWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_MAXIMIZE);
}
void _glfwPlatformShowWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_SHOWNA);
}
void _glfwPlatformHideWindow(_GLFWwindow* window)
{
ShowWindow(window->win32.handle, SW_HIDE);
}
void _glfwPlatformRequestWindowAttention(_GLFWwindow* window)
{
FlashWindow(window->win32.handle, TRUE);
}
void _glfwPlatformFocusWindow(_GLFWwindow* window)
{
BringWindowToTop(window->win32.handle);
SetForegroundWindow(window->win32.handle);
SetFocus(window->win32.handle);
}
void _glfwPlatformSetWindowMonitor(_GLFWwindow* window,
_GLFWmonitor* monitor,
int xpos, int ypos,
int width, int height,
int refreshRate)
{
if (window->monitor == monitor)
{
if (monitor)
{
if (monitor->window == window)
{
acquireMonitor(window);
fitToMonitor(window);
}
}
else
{
RECT rect = { xpos, ypos, xpos + width, ypos + height };
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
{
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
}
SetWindowPos(window->win32.handle, HWND_TOP,
rect.left, rect.top,
rect.right - rect.left, rect.bottom - rect.top,
SWP_NOCOPYBITS | SWP_NOACTIVATE | SWP_NOZORDER);
}
return;
}
if (window->monitor)
releaseMonitor(window);
_glfwInputWindowMonitor(window, monitor);
if (window->monitor)
{
MONITORINFO mi = { sizeof(mi) };
UINT flags = SWP_SHOWWINDOW | SWP_NOACTIVATE | SWP_NOCOPYBITS;
if (window->decorated)
{
DWORD style = GetWindowLongW(window->win32.handle, GWL_STYLE);
style &= ~WS_OVERLAPPEDWINDOW;
style |= getWindowStyle(window);
SetWindowLongW(window->win32.handle, GWL_STYLE, style);
flags |= SWP_FRAMECHANGED;
}
acquireMonitor(window);
GetMonitorInfo(window->monitor->win32.handle, &mi);
SetWindowPos(window->win32.handle, HWND_TOPMOST,
mi.rcMonitor.left,
mi.rcMonitor.top,
mi.rcMonitor.right - mi.rcMonitor.left,
mi.rcMonitor.bottom - mi.rcMonitor.top,
flags);
}
else
{
HWND after;
RECT rect = { xpos, ypos, xpos + width, ypos + height };
DWORD style = GetWindowLongW(window->win32.handle, GWL_STYLE);
UINT flags = SWP_NOACTIVATE | SWP_NOCOPYBITS;
if (window->decorated)
{
style &= ~WS_POPUP;
style |= getWindowStyle(window);
SetWindowLongW(window->win32.handle, GWL_STYLE, style);
flags |= SWP_FRAMECHANGED;
}
if (window->floating)
after = HWND_TOPMOST;
else
after = HWND_NOTOPMOST;
if (_glfwIsWindows10AnniversaryUpdateOrGreaterWin32())
{
AdjustWindowRectExForDpi(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window),
GetDpiForWindow(window->win32.handle));
}
else
{
AdjustWindowRectEx(&rect, getWindowStyle(window),
FALSE, getWindowExStyle(window));
}
SetWindowPos(window->win32.handle, after,
rect.left, rect.top,
rect.right - rect.left, rect.bottom - rect.top,
flags);
}
}
int _glfwPlatformWindowFocused(_GLFWwindow* window)
{
return window->win32.handle == GetActiveWindow();
}
int _glfwPlatformWindowIconified(_GLFWwindow* window)
{
return IsIconic(window->win32.handle);
}
int _glfwPlatformWindowVisible(_GLFWwindow* window)
{
return IsWindowVisible(window->win32.handle);
}
int _glfwPlatformWindowMaximized(_GLFWwindow* window)
{
return IsZoomed(window->win32.handle);
}
int _glfwPlatformWindowHovered(_GLFWwindow* window)
{
return cursorInContentArea(window);
}
int _glfwPlatformFramebufferTransparent(_GLFWwindow* window)
{
BOOL enabled;
if (!window->win32.transparent)
return GLFW_FALSE;
if (!IsWindowsVistaOrGreater())
return GLFW_FALSE;
return SUCCEEDED(DwmIsCompositionEnabled(&enabled)) && enabled;
}
void _glfwPlatformSetWindowResizable(_GLFWwindow* window, GLFWbool enabled)
{
updateWindowStyles(window);
}
void _glfwPlatformSetWindowDecorated(_GLFWwindow* window, GLFWbool enabled)
{
updateWindowStyles(window);
}
void _glfwPlatformSetWindowFloating(_GLFWwindow* window, GLFWbool enabled)
{
const HWND after = enabled ? HWND_TOPMOST : HWND_NOTOPMOST;
SetWindowPos(window->win32.handle, after, 0, 0, 0, 0,
SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOSIZE);
}
float _glfwPlatformGetWindowOpacity(_GLFWwindow* window)
{
BYTE alpha;
DWORD flags;
if ((GetWindowLongW(window->win32.handle, GWL_EXSTYLE) & WS_EX_LAYERED) &&
GetLayeredWindowAttributes(window->win32.handle, NULL, &alpha, &flags))
{
if (flags & LWA_ALPHA)
return alpha / 255.f;
}
return 1.f;
}
void _glfwPlatformSetWindowOpacity(_GLFWwindow* window, float opacity)
{
if (opacity < 1.f)
{
const BYTE alpha = (BYTE) (255 * opacity);
DWORD style = GetWindowLongW(window->win32.handle, GWL_EXSTYLE);
style |= WS_EX_LAYERED;
SetWindowLongW(window->win32.handle, GWL_EXSTYLE, style);
SetLayeredWindowAttributes(window->win32.handle, 0, alpha, LWA_ALPHA);
}
else
{
DWORD style = GetWindowLongW(window->win32.handle, GWL_EXSTYLE);
style &= ~WS_EX_LAYERED;
SetWindowLongW(window->win32.handle, GWL_EXSTYLE, style);
}
}
void _glfwPlatformSetRawMouseMotion(_GLFWwindow *window, GLFWbool enabled)
{
if (_glfw.win32.disabledCursorWindow != window)
return;
if (enabled)
enableRawMouseMotion(window);
else
disableRawMouseMotion(window);
}
GLFWbool _glfwPlatformRawMouseMotionSupported(void)
{
return GLFW_TRUE;
}
void _glfwPlatformPollEvents(void)
{
MSG msg;
HWND handle;
_GLFWwindow* window;
while (PeekMessageW(&msg, NULL, 0, 0, PM_REMOVE))
{
if (msg.message == WM_QUIT)
{
// NOTE: While GLFW does not itself post WM_QUIT, other processes
// may post it to this one, for example Task Manager
// HACK: Treat WM_QUIT as a close on all windows
window = _glfw.windowListHead;
while (window)
{
_glfwInputWindowCloseRequest(window);
window = window->next;
}
}
else
{
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
}
// HACK: Release modifier keys that the system did not emit KEYUP for
// NOTE: Shift keys on Windows tend to "stick" when both are pressed as
// no key up message is generated by the first key release
// NOTE: Windows key is not reported as released by the Win+V hotkey
// Other Win hotkeys are handled implicitly by _glfwInputWindowFocus
// because they change the input focus
// NOTE: The other half of this is in the WM_*KEY* handler in windowProc
handle = GetActiveWindow();
if (handle)
{
window = GetPropW(handle, L"GLFW");
if (window)
{
int i;
const int keys[4][2] =
{
{ VK_LSHIFT, GLFW_KEY_LEFT_SHIFT },
{ VK_RSHIFT, GLFW_KEY_RIGHT_SHIFT },
{ VK_LWIN, GLFW_KEY_LEFT_SUPER },
{ VK_RWIN, GLFW_KEY_RIGHT_SUPER }
};
for (i = 0; i < 4; i++)
{
const int vk = keys[i][0];
const int key = keys[i][1];
const int scancode = _glfw.win32.scancodes[key];
if ((GetKeyState(vk) & 0x8000))
continue;
if (window->keys[key] != GLFW_PRESS)
continue;
_glfwInputKey(window, key, scancode, GLFW_RELEASE, getKeyMods());
}
}
}
window = _glfw.win32.disabledCursorWindow;
if (window)
{
int width, height;
_glfwPlatformGetWindowSize(window, &width, &height);
// NOTE: Re-center the cursor only if it has moved since the last call,
// to avoid breaking glfwWaitEvents with WM_MOUSEMOVE
if (window->win32.lastCursorPosX != width / 2 ||
window->win32.lastCursorPosY != height / 2)
{
_glfwPlatformSetCursorPos(window, width / 2, height / 2);
}
}
}
void _glfwPlatformWaitEvents(void)
{
WaitMessage();
_glfwPlatformPollEvents();
}
void _glfwPlatformWaitEventsTimeout(double timeout)
{
MsgWaitForMultipleObjects(0, NULL, FALSE, (DWORD) (timeout * 1e3), QS_ALLEVENTS);
_glfwPlatformPollEvents();
}
void _glfwPlatformPostEmptyEvent(void)
{
PostMessage(_glfw.win32.helperWindowHandle, WM_NULL, 0, 0);
}
void _glfwPlatformGetCursorPos(_GLFWwindow* window, double* xpos, double* ypos)
{
POINT pos;
if (GetCursorPos(&pos))
{
ScreenToClient(window->win32.handle, &pos);
if (xpos)
*xpos = pos.x;
if (ypos)
*ypos = pos.y;
}
}
void _glfwPlatformSetCursorPos(_GLFWwindow* window, double xpos, double ypos)
{
POINT pos = { (int) xpos, (int) ypos };
// Store the new position so it can be recognized later
window->win32.lastCursorPosX = pos.x;
window->win32.lastCursorPosY = pos.y;
ClientToScreen(window->win32.handle, &pos);
SetCursorPos(pos.x, pos.y);
}
void _glfwPlatformSetCursorMode(_GLFWwindow* window, int mode)
{
if (mode == GLFW_CURSOR_DISABLED)
{
if (_glfwPlatformWindowFocused(window))
disableCursor(window);
}
else if (_glfw.win32.disabledCursorWindow == window)
enableCursor(window);
else if (cursorInContentArea(window))
updateCursorImage(window);
}
const char* _glfwPlatformGetScancodeName(int scancode)
{
if (scancode < 0 || scancode > (KF_EXTENDED | 0xff) ||
_glfw.win32.keycodes[scancode] == GLFW_KEY_UNKNOWN)
{
_glfwInputError(GLFW_INVALID_VALUE, "Invalid scancode");
return NULL;
}
return _glfw.win32.keynames[_glfw.win32.keycodes[scancode]];
}
int _glfwPlatformGetKeyScancode(int key)
{
return _glfw.win32.scancodes[key];
}
int _glfwPlatformCreateCursor(_GLFWcursor* cursor,
const GLFWimage* image,
int xhot, int yhot)
{
cursor->win32.handle = (HCURSOR) createIcon(image, xhot, yhot, GLFW_FALSE);
if (!cursor->win32.handle)
return GLFW_FALSE;
return GLFW_TRUE;
}
int _glfwPlatformCreateStandardCursor(_GLFWcursor* cursor, int shape)
{
int id = 0;
if (shape == GLFW_ARROW_CURSOR)
id = OCR_NORMAL;
else if (shape == GLFW_IBEAM_CURSOR)
id = OCR_IBEAM;
else if (shape == GLFW_CROSSHAIR_CURSOR)
id = OCR_CROSS;
else if (shape == GLFW_HAND_CURSOR)
id = OCR_HAND;
else if (shape == GLFW_HRESIZE_CURSOR)
id = OCR_SIZEWE;
else if (shape == GLFW_VRESIZE_CURSOR)
id = OCR_SIZENS;
else
return GLFW_FALSE;
cursor->win32.handle = LoadImageW(NULL,
MAKEINTRESOURCEW(id), IMAGE_CURSOR, 0, 0,
LR_DEFAULTSIZE | LR_SHARED);
if (!cursor->win32.handle)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to create standard cursor");
return GLFW_FALSE;
}
return GLFW_TRUE;
}
void _glfwPlatformDestroyCursor(_GLFWcursor* cursor)
{
if (cursor->win32.handle)
DestroyIcon((HICON) cursor->win32.handle);
}
void _glfwPlatformSetCursor(_GLFWwindow* window, _GLFWcursor* cursor)
{
if (cursorInContentArea(window))
updateCursorImage(window);
}
void _glfwPlatformSetClipboardString(const char* string)
{
int characterCount;
HANDLE object;
WCHAR* buffer;
characterCount = MultiByteToWideChar(CP_UTF8, 0, string, -1, NULL, 0);
if (!characterCount)
return;
object = GlobalAlloc(GMEM_MOVEABLE, characterCount * sizeof(WCHAR));
if (!object)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to allocate global handle for clipboard");
return;
}
buffer = GlobalLock(object);
if (!buffer)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to lock global handle");
GlobalFree(object);
return;
}
MultiByteToWideChar(CP_UTF8, 0, string, -1, buffer, characterCount);
GlobalUnlock(object);
if (!OpenClipboard(_glfw.win32.helperWindowHandle))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to open clipboard");
GlobalFree(object);
return;
}
EmptyClipboard();
SetClipboardData(CF_UNICODETEXT, object);
CloseClipboard();
}
const char* _glfwPlatformGetClipboardString(void)
{
HANDLE object;
WCHAR* buffer;
if (!OpenClipboard(_glfw.win32.helperWindowHandle))
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to open clipboard");
return NULL;
}
object = GetClipboardData(CF_UNICODETEXT);
if (!object)
{
_glfwInputErrorWin32(GLFW_FORMAT_UNAVAILABLE,
"Win32: Failed to convert clipboard to string");
CloseClipboard();
return NULL;
}
buffer = GlobalLock(object);
if (!buffer)
{
_glfwInputErrorWin32(GLFW_PLATFORM_ERROR,
"Win32: Failed to lock global handle");
CloseClipboard();
return NULL;
}
free(_glfw.win32.clipboardString);
_glfw.win32.clipboardString = _glfwCreateUTF8FromWideStringWin32(buffer);
GlobalUnlock(object);
CloseClipboard();
return _glfw.win32.clipboardString;
}
void _glfwPlatformGetRequiredInstanceExtensions(char** extensions)
{
if (!_glfw.vk.KHR_surface || !_glfw.vk.KHR_win32_surface)
return;
extensions[0] = "VK_KHR_surface";
extensions[1] = "VK_KHR_win32_surface";
}
int _glfwPlatformGetPhysicalDevicePresentationSupport(VkInstance instance,
VkPhysicalDevice device,
uint32_t queuefamily)
{
PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR
vkGetPhysicalDeviceWin32PresentationSupportKHR =
(PFN_vkGetPhysicalDeviceWin32PresentationSupportKHR)
vkGetInstanceProcAddr(instance, "vkGetPhysicalDeviceWin32PresentationSupportKHR");
if (!vkGetPhysicalDeviceWin32PresentationSupportKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"Win32: Vulkan instance missing VK_KHR_win32_surface extension");
return GLFW_FALSE;
}
return vkGetPhysicalDeviceWin32PresentationSupportKHR(device, queuefamily);
}
VkResult _glfwPlatformCreateWindowSurface(VkInstance instance,
_GLFWwindow* window,
const VkAllocationCallbacks* allocator,
VkSurfaceKHR* surface)
{
VkResult err;
VkWin32SurfaceCreateInfoKHR sci;
PFN_vkCreateWin32SurfaceKHR vkCreateWin32SurfaceKHR;
vkCreateWin32SurfaceKHR = (PFN_vkCreateWin32SurfaceKHR)
vkGetInstanceProcAddr(instance, "vkCreateWin32SurfaceKHR");
if (!vkCreateWin32SurfaceKHR)
{
_glfwInputError(GLFW_API_UNAVAILABLE,
"Win32: Vulkan instance missing VK_KHR_win32_surface extension");
return VK_ERROR_EXTENSION_NOT_PRESENT;
}
memset(&sci, 0, sizeof(sci));
sci.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
sci.hinstance = GetModuleHandle(NULL);
sci.hwnd = window->win32.handle;
err = vkCreateWin32SurfaceKHR(instance, &sci, allocator, surface);
if (err)
{
_glfwInputError(GLFW_PLATFORM_ERROR,
"Win32: Failed to create Vulkan surface: %s",
_glfwGetVulkanResultString(err));
}
return err;
}
//////////////////////////////////////////////////////////////////////////
////// GLFW native API //////
//////////////////////////////////////////////////////////////////////////
GLFWAPI HWND glfwGetWin32Window(GLFWwindow* handle)
{
_GLFWwindow* window = (_GLFWwindow*) handle;
_GLFW_REQUIRE_INIT_OR_RETURN(NULL);
return window->win32.handle;
}