sdl.rar_SDL sdk_doc_html SDL_sdl

#include "stdio.h" #include "stdlib.h" #include "string.h" #include <SDL.h> #include "windows.h" const int SCREEN_WIDTH = 640; //屏幕宽度 const int SCREEN_HEIGHT = 480; //屏幕高度 const int SCREEN_BPP = 32; //屏幕所使用的像素色彩位数 SDL_Surface *screen = NULL; //屏幕接口 boolean quit = false; /* 导入位图*/ SDL_Surface *load_image( char *filename ) { //将图象暂时存储在这里 SDL_Surface* loadedImage = NULL; //存储最佳的图象 SDL_Surface* optimizedImage = NULL; //导入图象 loadedImage = SDL_LoadBMP( filename ); //如果导入图象不为空 if( loadedImage != NULL ) { //建立最佳的图象 optimizedImage = SDL_DisplayFormat( loadedImage ); //释放老的图象 SDL_FreeSurface( loadedImage ); } //返回最佳的图象 return optimizedImage; } /*显示函数*/ void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination ) { //建立一个暂时的矩形设置显示的坐标 SDL_Rect offset; //设置坐标 offset.x = x; offset.y = y; //显示图象 SDL_BlitSurface( source, NULL, destination, &offset ); } int my_thread( void *data ) { //While the program is not over while( quit == false ) { //Do the caption animation SDL_WM_SetCaption( "Thread is running", NULL ); SDL_Delay( 250 ); SDL_WM_SetCaption( "Thread is running.", NULL ); SDL_Delay( 250 ); SDL_WM_SetCaption( "Thread is running..", NULL ); SDL_Delay( 250 ); SDL_WM_SetCaption( "Thread is running...", NULL ); SDL_Delay( 250 ); } return 0; } int main( int argc, char* args[] ) //主程序 { char msg[500]; // 得到系统消息 int done; /* 初始化SDL */ if (SDL_Init(SDL_INIT_VIDEO) < 0) { sprintf (msg, "不能初始化 SDL: %sn", SDL_GetError ()); MessageBoxA(0, msg, "Error", MB_ICONHAND); exit (1); } atexit(SDL_Quit); /* 设置 640x480 16-bits 图象模式 */ screen = SDL_SetVideoMode (640, 480, 16, SDL_SWSURFACE | SDL_DOUBLEBUF); if (screen == NULL) { sprintf(msg, "不能设置成 640x480x16 图象模式: %sn", SDL_GetError ()); MessageBoxA (0, msg, "Error", MB_ICONHAND); exit (2); } /*设置SDL窗口标题 */ SDL_WM_SetCaption("hello,the world", NULL); done = 0; /*导入图象*/ SDL_Surface* demo = load_image("uhnfu32u.bmp"); done = 0; /*在屏幕上画图*/ apply_surface(0,0,demo,screen); //然后进入游戏循环，在循环的过程中，我们需要不停地更新屏幕： //更新屏幕 if( SDL_Flip( screen ) == -1 ) { return 1; } SDL_Thread* thread = SDL_CreateThread( my_thread, NULL ); //游戏循环 done=1时退出，done=0时继续 while (!done) { SDL_Event event; /* Check for events */ while (SDL_PollEvent (&event)) { switch (event.type) { case SDL_KEYDOWN: break; case SDL_QUIT: done = 1; quit = true; break; default: break; } } } //最后，图象显示完毕，我们要释放图象。 /*释放图象*/ SDL_FreeSurface(demo); SDL_Quit(); return 0; }