FormatMessage

FormatMessage

　　获取GetLastError 函数返回的错误代码对应的字符串描述.

#include <Windows.h>
#include <tchar.h>

VOID PutError(DWORD error) {
    TCHAR* buffer;
    FormatMessage(
        FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
        NULL,
        error,
        0,
        (LPTSTR)&buffer,
        0,
        NULL);
    MessageBox(NULL, buffer, NULL, 0);
    LocalFree(buffer);  
}

// 显示错误信息
PutError(GetLastError());