#include <windows.h>

int WINAPI WinMain(

    HINSTANCE hInstance,

    HINSTANCE hPrevInstance,

    LPSTR lpCmdLine,

    int nCmdShow

    )

{

    BOOL b;

    WCHAR szWString[] = L"Unicode宽字符：爱白菜的小昆虫", szWBuff[];

    CHAR szAString[] = "多字节窄字符：爱白菜的小昆虫", szABuff[];

    TCHAR szString[] = TEXT("自适应字符：爱白菜的小昆虫"), szBuff[];

    //Unicode 宽字符

    MessageBoxW(NULL, szWString, L"Unicode显示", MB_OK);

    //Unicode转多字节

    WideCharToMultiByte( CP_ACP,

        WC_COMPOSITECHECK,

        szWString, //Unicode字节缓冲区

        lstrlenW(szWString)+,//Unicode字节字符需要转换的长度，+1包涵'\0'

        szABuff,//接受被转换的字符串缓冲区

        sizeof(szABuff),//接受字符串缓冲区最大值

        NULL, &b);

    MessageBoxA(NULL, szABuff, "Unicode转多字节", MB_OK);

    //多字节 窄字符

    MessageBoxA(NULL, szAString, "多字节显示", MB_OK);

    //多字节转Unicode

    MultiByteToWideChar(CP_ACP,

        MB_PRECOMPOSED,

        szAString,//多字节缓冲区

        lstrlenA(szAString)+,//需要转换的多字节字符串的长度，+1包涵'\0'

        szWBuff,//接受被转的字符串缓冲区

        sizeof(szWBuff));//接受字符串缓冲区最大值

    MessageBoxW(NULL, szWBuff, L"多字节转Unicode", MB_OK);

    return ;

}