kc3-lang/SDL/test/relative_mode.markdown

Branch - branch -v2.28

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• Hash : 0e45984f
  Author :
  Date : 2015-06-21T17:33:46
  

  Fixed crash if initialization of EGL failed but was tried again later. The internal function SDL_EGL_LoadLibrary() did not delete and remove a mostly uninitialized data structure if loading the library first failed. A later try to use EGL then skipped initialization and assumed it was previously successful because the data structure now already existed. This led to at least one crash in the internal function SDL_EGL_ChooseConfig() because a NULL pointer was dereferenced to make a call to eglBindAPI().

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• 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;
      }
  

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