MFC:how to hide the program ICON in the task bar in win8.1

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How to hide the Program ICON in the task bar in Win8.1.
I tried the API ModifyStyleEx(WS_EX_APPWINDOW, WS_EX_TOOLWINDOW), but not worked.

C++

void CMFC_NotifyIconDlg::ShowHide(bool flag)
{
	static CRect TmpRect;

	if (flag)
	{//show
		ModifyStyleEx(WS_EX_TOOLWINDOW, WS_EX_APPWINDOW);

		AfxGetApp()->GetMainWnd()->ShowWindow(SW_SHOW);
		ShowWindow(SW_SHOW);

		AfxGetMainWnd()->MoveWindow(TmpRect.left, TmpRect.top, TmpRect.Width(), TmpRect.Height(), true); 
	}
	else
	{//hide
		GetWindowRect(&TmpRect);/
		ModifyStyleEx(WS_EX_APPWINDOW, WS_EX_TOOLWINDOW);

		AfxGetApp()->GetMainWnd()->ShowWindow(SW_HIDE);
		ShowWindow(SW_HIDE);
		AfxGetMainWnd()->MoveWindow(-TmpRect.right, -TmpRect.bottom, TmpRect.Width(), TmpRect.Height(), true); 
	}
}

What I have tried:

https://msdn.microsoft.com/zh-cn/library/61fe4bte.aspx
WS_EX_TOOLWINDOW Creates a tool window, which is a window intended to be used as a floating toolbar.A tool window has a title bar that is shorter than a normal title bar, and the window title is drawn using a smaller font.A tool window does not appear in the task bar or in the window that appears when the user presses ALT+TAB.

Posted 19-May-16 18:37pm

LubinLew

Updated 20-May-16 3:21am

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Comments

Richard MacCutchan 20-May-16 4:08am

You should check the return value from your calls to ModifyStyleEx to see if they succeeded. Not all styles can be changed after a Window has been created.

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Richard MacCutchan · Accepted Answer · 2016-05-20T03:21:00

Solution 1

The issue is that you must use WS_EX_TOOLWINDOW when you first create the Window. It will then not show up on the task bar. But if you change its type at a later time it will still not show. The type of Window is established at create time.

Posted 20-May-16 3:21am

Richard MacCutchan