为什么我会收到错误“错误C2065:'yesno':未声明的标识符"? [英] Why am i getting the error "error C2065: 'yesno' : undeclared identifier"

问题描述

case WM_KEYDOWN:
    if( wParam == VK_ESCAPE )
        int yesno = MessageBox(0, "Do you really want to quit?", "Msg", MB_YESNO);
        if( yesno == IDYES )
            DestroyWindow(ghMainWnd);
    return 0;

由于某种原因，我收到错误错误C2065:" yesno":未声明的标识符".该代码对我来说似乎是正确的.我缺少什么吗?

For some reason I''m getting the error "error C2065: ''yesno'' : undeclared identifier". The code looks correct to me. Am I missing something?

推荐答案

是的.您缺少{}.

像这样:

Yes. you are missing {}.

Like so:

case WM_KEYDOWN:
    if( wParam == VK_ESCAPE )
    {
        int yesno = MessageBox(0, "Do you really want to quit?", "Msg", MB_YESNO);
        if( yesno == IDYES )
            DestroyWindow(ghMainWnd);
    }
    return 0;

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