90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
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#ifdef __cplusplus
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#include <cstdlib>
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#else
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#include <stdlib.h>
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#endif
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#include <SDL/SDL.h>
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int main ( int argc, char** argv )
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{
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// initialize SDL video
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if ( SDL_Init( SDL_INIT_VIDEO ) < 0 )
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{
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printf( "Unable to init SDL: %s\n", SDL_GetError() );
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return 1;
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}
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// make sure SDL cleans up before exit
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atexit(SDL_Quit);
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// create a new window
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SDL_Surface* screen = SDL_SetVideoMode(640, 480, 16,
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SDL_HWSURFACE|SDL_DOUBLEBUF);
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if ( !screen )
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{
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printf("Unable to set 640x480 video: %s\n", SDL_GetError());
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return 1;
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}
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// load an image
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SDL_Surface* bmp = SDL_LoadBMP("cb.bmp");
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if (!bmp)
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{
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printf("Unable to load bitmap: %s\n", SDL_GetError());
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return 1;
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}
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// centre the bitmap on screen
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SDL_Rect dstrect;
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dstrect.x = (screen->w - bmp->w) / 2;
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dstrect.y = (screen->h - bmp->h) / 2;
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// program main loop
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bool done = false;
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while (!done)
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{
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// message processing loop
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SDL_Event event;
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while (SDL_PollEvent(&event))
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{
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// check for messages
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switch (event.type)
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{
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// exit if the window is closed
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case SDL_QUIT:
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done = true;
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break;
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// check for keypresses
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case SDL_KEYDOWN:
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{
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// exit if ESCAPE is pressed
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if (event.key.keysym.sym == SDLK_ESCAPE)
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done = true;
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break;
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}
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} // end switch
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} // end of message processing
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// DRAWING STARTS HERE
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// clear screen
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SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 0, 0));
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// draw bitmap
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SDL_BlitSurface(bmp, 0, screen, &dstrect);
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// DRAWING ENDS HERE
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// finally, update the screen :)
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SDL_Flip(screen);
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} // end main loop
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// free loaded bitmap
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SDL_FreeSurface(bmp);
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// all is well ;)
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printf("Exited cleanly\n");
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return 0;
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}
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