EnumWindows does not enumerate math input panel window

Question

I cannot use Windows API EnumWindows to enumerate such window. Any idea? Thanks.

Answer 1

This API can work, the Math Input Panel has no Caption, so I think you just check the Caption and let the application tell you if the Window exists.

We can check the Window Class like this:

	WNDENUMPROC lpEnumFunc = EnumWindowsProc;
	LPARAM lParam = NULL;
	BOOL hr = EnumWindows(lpEnumFunc,lParam);
	return 0;
}

BOOL CALLBACK EnumWindowsProc(
	__in  HWND hwnd,
	__in  LPARAM lParam
	)
{
	LPWSTR lpString = new wchar_t[256];
	GetClassName(hwnd,lpString, 256);
	LPWSTR classname = L"MathInput_Window";
	if(!wcsncmp(classname,lpString,wcslen(classname)-1))//class name: MathInput_Window
		std::wcout<<lpString<<"+"<<hwnd<<std::endl;
	return TRUE;
}

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Mike Zhang[MSFT]
MSDN Community Support | Feedback to us

Answer 2

Mike, thanks for reply. I got the window with your way. However, IsWindowVisible returns FALSE on the handle of MIP. I expect it to return true. Any idea? Thanks.

Answer 3

You're welcome!

When I use this code, the Math Input Panel Window is displayed topmost on the desktop, then the IsWindowVisible function return 1 to me.

Maybe you minimize it, so that you cannot see it when you run the code, and the code will not think so it is visible.

BOOL CALLBACK EnumWindowsProc(
	__in  HWND hwnd,
	__in  LPARAM lParam
	)
{
	LPWSTR lpString = new wchar_t[256];
	GetClassName(hwnd,lpString, 256);
	LPWSTR classname = L"MathInput_Window";
	if(!wcsncmp(classname,lpString,wcslen(classname)-1))//class name: MathInput_Window
	{

		std::wcout<<lpString<<"+"<<hwnd<<" IsWindowVisible:"<<IsWindowVisible(hwnd)<<std::endl;
	}
	return TRUE;
}

---

Mike Zhang[MSFT]
MSDN Community Support | Feedback to us