Qt5+SDL2简易入门教程(C语言)

一、环境

Win7 64

qt-opensource-windows-x86-5.11.2.exe

SDL 2.0.9

 

二、下载

Qt可直接下载的页面

SDL2下载页面

SDL2下载的是VC版本

三、新建qt项目

1、新建一个纯C项目

2、把SDL文件放到项目中

3、修改qt项目设置

pro文件加入SDL路径

INCLUDEPATH += ../SDL2/SDL2/include/

LIBS += -L../SDL2/SDL2/lib/x86 -lSDL2
LIBS += -L../SDL2/SDL2/lib/x86 -lSDL2main
LIBS += -L../SDL2/SDL2/lib/x86 -lSDL2test

 

 

项目设置-RUN的环境变量中加入SDL2.DLL的路径

如果这部漏了，就会出错。SDL2 exited with code -1073741515

四、添加测试代码

#include <stdio.h>
#include "SDL.h"
#undef main

int main()
{
    SDL_Window* gWindow = NULL;
    SDL_Surface* gScreenSurface = NULL;
    if(SDL_Init(SDL_INIT_VIDEO)<0)
    {
        printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
        return 0;
    }
    gWindow=SDL_CreateWindow("SHOW BMP",SDL_WINDOWPOS_UNDEFINED,SDL_WINDOWPOS_UNDEFINED,215,134,SDL_WINDOW_SHOWN);
    if(gWindow==NULL)
    {
        printf( "Window could not be created! SDL_Error: %s\n", SDL_GetError() );
        return 0;
    }
    gScreenSurface=SDL_GetWindowSurface(gWindow);
    SDL_FillRect(gScreenSurface, NULL, SDL_MapRGB(gScreenSurface->format, 0xFF, 0x00, 0x00));
    SDL_UpdateWindowSurface(gWindow);
    SDL_Delay(2000);
    SDL_FreeSurface( gScreenSurface );
    gScreenSurface = NULL;
    SDL_DestroyWindow(gWindow);
    gWindow = NULL ;
    SDL_Quit();
    return 0;
}

 

五、运行结果

显示一个红色的方框，2秒后自动关闭。