SDL12初步学习

贾熊猫

于 2013-08-30 18:53:24 发布

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本文链接：https://blog.youkuaiyun.com/jia_zhengshen/article/details/10630921

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1.使用sdl显示bmp格式的图片，但是由于是初级，所以有点小问题。

#include<SDL.h>
//#include<iostream>
#include<stdio.h>
void display_bmp(char *fileName)
{
	
}
int main()
{
	printf("initializesdl \n");
	if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO ) == -1)
	{
		return 1;
	}//iniif 
	atexit(SDL_Quit);
	SDL_Surface *screen;
	screen = SDL_SetVideoMode(640,480,8,SDL_SWSURFACE|SDL_ANYFORMAT);
	if(screen ==NULL)
		return 2;

	SDL_Surface *img;
	img = SDL_LoadBMP("hello.bmp");
	if(img == NULL)
		exit(2);
	if(img->format->palette && screen->format->palette)
	{
		SDL_SetColors(screen,img->format->palette->colors,0,
			img->format->palette->ncolors);
	}
	 /* Blit onto the screen surface */
    if(SDL_BlitSurface(img, NULL, screen, NULL) < 0)
        fprintf(stderr, "BlitSurface error: %s\n", SDL_GetError());

    SDL_UpdateRect(screen, 0, 0, img->w, img->h);
	while(1);
    /* Free the allocated BMP surface */
    SDL_FreeSurface(img);

	return 0;
}