ref: 12b7990cf9e2a448fe7d54c4f21b85483c9cf8c2
dir: /external/SDL2/test/relative_mode.markdown/
Relative mode testing ===================== See test program at the bottom of this file. Initial tests: - When in relative mode, the mouse shouldn't be moveable outside of the window. - When the cursor is outside the window when relative mode is enabled, mouse clicks should not go to whatever app was under the cursor previously. - When alt/cmd-tabbing between a relative mode app and another app, clicks when in the relative mode app should also not go to whatever app was under the cursor previously. Code ==== #include <SDL.h> int PollEvents() { SDL_Event event; while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_QUIT: return 1; default: break; } } return 0; } int main(int argc, char *argv[]) { SDL_Window *win; SDL_Init(SDL_INIT_VIDEO); win = SDL_CreateWindow("Test", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 800, 600, 0); SDL_SetRelativeMouseMode(SDL_TRUE); while (1) { if (PollEvents()) break; } SDL_DestroyWindow(win); SDL_Quit(); return 0; }