huffman数据压缩算法验证成功

sdl/hello_sdl.c

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+
+
+
+//使用 SDL 和 标准 IO
+#include <C:\MinGW\include\sdl2\SDL.h>
+#include <stdio.h>
+
+//定义屏幕尺寸常量
+const int SCREEN_WIDTH = 640;
+const int SCREEN_HEIGHT = 480;
+
+
+int main( int argc, char* args[] )
+{
+    //将要渲染的窗口
+    SDL_Window* window = NULL;
+
+    //窗口含有的surface
+    SDL_Surface* screenSurface = NULL;
+
+    //初始化SDL
+    if( SDL_Init( SDL_INIT_VIDEO ) < 0 )
+    {
+        printf( "SDL could not initialize! SDL_Error: %s\n", SDL_GetError() );
+    }
+    else
+    {
+        //创建 window
+        window = SDL_CreateWindow( "SDL Tutorial", SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH, SCREEN_HEIGHT, SDL_WINDOW_SHOWN );
+        if( window == NULL )
+        {
+            printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
+        }
+        else
+        {
+            //获取 window surface
+            screenSurface = SDL_GetWindowSurface( window );
+
+            //用白色填充surface
+            SDL_FillRect( screenSurface, NULL, SDL_MapRGB( screenSurface->format, 0xFF, 0xFF, 0xFF ) );
+
+            //更新surface
+            SDL_UpdateWindowSurface( window );
+
+            //延迟两秒
+            SDL_Delay( 2000 );
+        }
+    }
+    //销毁 window
+    SDL_DestroyWindow( window );
+
+    //退出 SDL subsystems
+    SDL_Quit();
+
+    return 0;}
+
+
+
+
+
+
+