SDL 显示汉字

#include "stdafx.h"

#pragma comment(lib,"SDL.lib")

#pragma comment(lib,"SDL2_image.lib")

#pragma comment(lib,"SDL_ttf.lib")

#include <stdio.h>

#include <stdlib.h>

#include <string>

#include <Windows.h>

#include "SDL.h"

#include "SDL_ttf.h"

/* 屏幕分辩率 */

#define  SCREEN_WIDTH   720

#define  SCREEN_HEIGHT  480

#define  SCREEN_BPP     32

const SDL_Color RGB_Black   = { , ,  };

const SDL_Color RGB_Red     = { , ,  };

const SDL_Color RGB_White   = { , ,  };

const SDL_Color RGB_Yellow  = { , ,  };

void ApplySurface(int x, int y, SDL_Surface* pSrc, SDL_Surface* pDest)

{

    SDL_Rect rect;

    rect.x = x;

    rect.y = y;

    rect.w = pSrc->w;

    rect.h = pSrc->h;

    SDL_BlitSurface(pSrc, NULL, pDest, &rect);

}

char *localeToUTF8(char *src)

{

    static char *buf = NULL;

    wchar_t *unicode_buf;

    int nRetLen;

    if(buf){

        free(buf);

        buf = NULL;

    }

    nRetLen = MultiByteToWideChar(CP_ACP,,src,-,NULL,);

    unicode_buf = (wchar_t*)malloc((nRetLen+)*sizeof(wchar_t));

    MultiByteToWideChar(CP_ACP,,src,-,unicode_buf,nRetLen);

    nRetLen = WideCharToMultiByte(CP_UTF8,,unicode_buf,-,NULL,,NULL,NULL);

    buf = (char*)malloc(nRetLen+);

    WideCharToMultiByte(CP_UTF8,,unicode_buf,-,buf,nRetLen,NULL,NULL);

    free(unicode_buf);

    return buf;

}

int main(int argc,char * argv[])

{

    SDL_Surface     *pScreen;

    SDL_Surface     *pBackground;

    SDL_Surface     *pText;

    SDL_Event       myEvent;

    TTF_Font *font;

    char szEnglish[]        = "Hello World!";

    wchar_t wszChinese[]    = L"世界，你好！";

    /* 初始化 SDL */

    if (SDL_Init(SDL_INIT_VIDEO) == -)

        return ;

    /* 初始化窗口 */

    pScreen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE | SDL_HWSURFACE);

    if (NULL == pScreen)//检测是否初始化成功

        return ;

    /* 初始化字体库 */

    if (TTF_Init() == - )

        return ;

    /* 设置窗口名字和图标 */

    SDL_WM_SetCaption(localeToUTF8("测试SDL显示文字"), NULL);

    /* 打开simfang.ttf 字库，设字体为20号 */

    font  = TTF_OpenFont("C:\\Windows\\Fonts\\simhei.ttf", );

    if (font == NULL)

    {

        return ;

    }

    /* 显示背景 */

    pBackground =  SDL_LoadBMP(".\\22.bmp");

    if (NULL != pBackground)

    {

        ApplySurface(, , pBackground, pScreen);

        SDL_FreeSurface(pBackground);

    }

    /* 设置字体样式（加粗｜斜体）*/

    TTF_SetFontStyle(font, TTF_STYLE_BOLD |  TTF_STYLE_ITALIC);

    /* 显示英文 */

    pText = TTF_RenderText_Solid(font, szEnglish, RGB_Red);

    if (NULL != pText)

    {

        ApplySurface(, , pText, pScreen);

        SDL_FreeSurface(pText);

    }

    pText = TTF_RenderText_Shaded(font,szEnglish,RGB_Red, RGB_White);

    if (NULL != pText)

    {

        ApplySurface(, , pText, pScreen);

        SDL_FreeSurface(pText);

    }

    pText = TTF_RenderText_Blended(font,szEnglish,RGB_Red);

    if (NULL != pText)

    {

        ApplySurface(, , pText, pScreen);

        SDL_FreeSurface(pText);

    }

    /* 显示中文 */

    pText = TTF_RenderUNICODE_Solid(font, (const Uint16 *)wszChinese, RGB_Red);

    if (NULL != pText)

    {

        ApplySurface(, , pText, pScreen);

        SDL_FreeSurface(pText);

    }

    pText = TTF_RenderUNICODE_Shaded(font, (const Uint16 *)wszChinese, RGB_Red, RGB_White);

    if (NULL != pText)

    {

        ApplySurface(, , pText, pScreen);

        SDL_FreeSurface(pText);

    }

    pText = TTF_RenderUNICODE_Blended(font, (const Uint16 *)wszChinese, RGB_Red);

    if (NULL != pText)

    {

        ApplySurface(, , pText, pScreen);

        SDL_FreeSurface(pText);

    }

    /* 将缓冲在界面显示出来 */

    SDL_Flip(pScreen);

    /* 事件处理 */

    int quit = ;

    while (!quit)

    {

        if (SDL_PollEvent(&myEvent))

        {

            if (SDL_QUIT == myEvent.type)

            {

                quit = ;

            }

        }

    }

    return ;

}

SDL本身并没有实际文字的功能，需要用到其扩展库SDL_ttf，下载地址：

http://www.libsdl.org/projects/SDL_ttf/docs/SDL_ttf.html

注意1：

TTF_OpenFont打开字体时，注意该字体是否支持汉字。
如果需要加载微软雅黑，其文件名是：msyhbd.ttf。这是因为C:\\Windows\\Fonts\\这个目录下我们看到的是“微软雅黑.ttf”这个文件。拷贝到桌面出来却是msyhbd.ttf跟msyh.ttf

注意2：
SDL_BlitSurface 不要使用，在以下配置环境中运行需要120ms