VC6下用 Debug 模式執行EnumWindow 發生如下圖有關暫存器 ESP 的錯誤，Release 模式又ok
C++:
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EnumWindows((WNDENUMPROC)EnumWindowsProc, 0);
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BOOL EnumWindowsProc(HWND hWnd, long lParam)
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{
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char Buff[1000], NameOfClass[1000];
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HWND hChild;
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GetWindowText(hWnd, Buff, 1000);
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GetClassName(hWnd, NameOfClass, 1000);
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if (strcmp(NameOfClass, "Notepad") == 0) {
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hChild = GetWindow(hWnd, GW_CHILD);
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GetClassName(hChild, NameOfClass, 1000);
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GetWindowText(hChild, Buff, 1000);
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g_hWnd = hChild;
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return FALSE;
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}
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return TRUE;
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}
Solution
do NOT use the compile option "/Gz", this option changes the calling convention
/Gd __cdecl calling convention
/Gr __fastcall calling convention
/Gz __stdcall calling convention