MessageBox的问题！

Question

我新建了一个Window Application并加入一个cpp文件
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lPcmdLine,
   int nShowCmd)
｛
MessageBox(NULL,"WRONG","DD",MB_OK);//WRONG
return 1;
｝
为什么MessageBox用不起来.大家可以试一下！很简单的

Answer 1

主窗口尚未建立，不能用MessageBox

Answer 2

#include <windows.h>int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
  // TODO: Place code here. MessageBox(NULL,"WRONG","DD",MB_OK);//WRONG

return 0;
}

Answer 3

unresolved external symbol __imp__MessageBoxA@16

Answer 4

因为你直接使用MessageBox，编译器以为你调用的是CWnd或者CWindow的MessageBox()而你的代码并非MFC程序

Answer 5

#include "stdafx.h"#include <windows.h>int APIENTRY WinMain(HINSTANCE hInstance,
                     HINSTANCE hPrevInstance,
                     LPSTR     lpCmdLine,
                     int       nCmdShow)
{
// TODO: Place code here.

MessageBox(NULL,"WRONG","DD",MB_OK);//WRONG

return 0;
}