[maemo-developers] [maemo-developers] Workaround to prevent crash when pressing home key in SDL programs (IT2006)?

[From: Frantisek Dufka]

Hi,

tried it yesterday just for fun and it works.

code looks like this:

#include <SDL/SDL.h>
#include "SDL_x11video.h"
#undef WMwindow

extern SDL_VideoDevice *current_video;

void SDL_X11_SetNetWMWindowType(char *windowtypestring){
     if (current_video && current_video->name && 
(strcmp(current_video->name,"x11
")==0)){
         struct SDL_PrivateVideoData *x11data=(struct 
SDL_PrivateVideoData *)current_video->hidden;
         Atom atoms[1] = { None };
         Atom net_wm_window_type;

         net_wm_window_type = XInternAtom (x11data->X11_Display,
                                           "_NET_WM_WINDOW_TYPE", False);

         atoms[0] = XInternAtom (x11data->X11_Display,
                                 windowtypestring,
                                 False);

         XChangeProperty ( x11data->X11_Display,
                           x11data->WMwindow,
                          net_wm_window_type,
                          XA_ATOM, 32, PropModeReplace,
                          (unsigned char *)atoms, 1);

     }

}

and example

int main(int argc, char *argv[]){
   SDL_Event event;
     int done=0;
     SDL_Init(SDL_INIT_VIDEO);
     SDL_SetVideoMode(720, 480, 0, 0);
     SDL_WM_SetCaption(argv[0], NULL);
     SDL_X11_SetNetWMWindowType("_NET_WM_WINDOW_TYPE_NORMAL");
     while (!done){
     SDL_PollEvent(&event);
     if(event.key.keysym.sym == SDLK_ESCAPE)
         done = 1;
     SDL_Delay(1);
     }
     SDL_Quit();
     return(0);
}


but you need to have sdl sources (fakeroot apt-get source libsdl1.2) to 
get SDL_x11video.h and SDL_sysvideo.h headers and compile it like this

gcc -Os sdltest.c -I /usr/include/SDL -I /usr/X11R6/include -o sdltest -lSDL


Frantisek