windows字符集问题

#define  NUMLINES ((int)(sizeof sysmetrics/sizeof sysmetrics[0]))
struct
{
    int   iIndex;
    TCHAR  * szLabel;
    TCHAR  * szDesc;
}
sysmetrics[] =
{
    SM_CXSCREEN,             TEXT("SM_CXSCREEN"),
                             TEXT("Screen width in poxels"),
    SM_CYSCREEN,             TEXT("SM_CYSCREEN"),
                             TEXT("Screen height in pixels")
};
这是我自己定义的一个windows头文件，但是vs一直报错，说无法从“const wchar_t”转换为“TCHAR *”，请问怎么解决