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comparison src/video/wincommon/SDL_sysevents.c @ 1145:d31afac94eff

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Patch from Martin Lange (mala-sdl at hotmail.com) to unregister SDL's win32 windowclass when shutting down the video subsystem...this allows you to safely unload/reload the SDL shared library on Windows between initializations. Discussion is here: http://www.devolution.com/pipermail/sdl/2005-February/067424.html
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 27 Sep 2005 09:00:42 +0000
parents 31fa08b36380
children 7d8e1925f35b
comparison
equal deleted inserted replaced
1144:509295d5a023 1145:d31afac94eff
560 void *handle; 560 void *handle;
561 561
562 if ( SDL_handle ) { 562 if ( SDL_handle ) {
563 handle = SDL_handle; 563 handle = SDL_handle;
564 } else { 564 } else {
565 /* Warning:
566 If SDL is built as a DLL, this will return a handle to
567 the DLL, not the application, and DirectInput may fail
568 to initialize.
569 */
570 handle = GetModuleHandle(NULL); 565 handle = GetModuleHandle(NULL);
571 } 566 }
572 return(handle); 567 return(handle);
573 } 568 }
574 569
575 /* This allows the SDL_WINDOWID hack */ 570 /* This allows the SDL_WINDOWID hack */
576 const char *SDL_windowid = NULL; 571 const char *SDL_windowid = NULL;
577 572
573 static int app_registered = 0;
574
578 /* Register the class for this application -- exported for winmain.c */ 575 /* Register the class for this application -- exported for winmain.c */
579 int SDL_RegisterApp(char *name, Uint32 style, void *hInst) 576 int SDL_RegisterApp(char *name, Uint32 style, void *hInst)
580 { 577 {
581 static int initialized = 0;
582 WNDCLASS class; 578 WNDCLASS class;
583 #ifdef WM_MOUSELEAVE 579 #ifdef WM_MOUSELEAVE
584 HMODULE handle; 580 HMODULE handle;
585 #endif 581 #endif
586 582
587 /* Only do this once... */ 583 /* Only do this once... */
588 if ( initialized ) { 584 if ( app_registered ) {
589 return(0); 585 return(0);
590 } 586 }
591 587
592 /* This function needs to be passed the correct process handle 588 /* This function needs to be passed the correct process handle
593 by the application. 589 by the application.
644 #endif /* WM_MOUSELEAVE */ 640 #endif /* WM_MOUSELEAVE */
645 641
646 /* Check for SDL_WINDOWID hack */ 642 /* Check for SDL_WINDOWID hack */
647 SDL_windowid = getenv("SDL_WINDOWID"); 643 SDL_windowid = getenv("SDL_WINDOWID");
648 644
649 initialized = 1; 645 app_registered = 1;
650 return(0); 646 return(0);
651 } 647 }
652 648
649 /*
650 * Unregisters the windowclass registered in SDL_RegisterApp above.
651 * Called from DIB_VideoQuit and DX5_VideoQuit when
652 * SDL_QuitSubSystem(INIT_VIDEO) is called.
653 */
654 void SDL_UnRegisterApp()
655 {
656 WNDCLASS class;
657
658 /* SDL_RegisterApp might not have been called before */
659 if (app_registered) {
660 /* Check for any registered windowclasses. */
661 if (GetClassInfo(SDL_Instance, SDL_Appname, &class)) {
662 UnregisterClass(SDL_Appname, SDL_Instance);
663 }
664 }
665 app_registered = 0;
666 }
667