Ok so I am using this code to hide the taskbar icon of a dialog based MFC application(VC++). The taskbar icon and the dialog box hide whenever I click on the cross or the close buttons. But I can’t get this one thing right. Whenever I hit the close or the cross button from title bar, the dialog box first flickers and shows a sort of intermediate dialog box and then hides. This is very annoying. I am posting my code here after two days of vain effort. So guys please help me. Thanks in advance.
void CMyAppDlg::OnBnClickedCancel()
{
// TODO: Add your control notification handler code here
CWnd* pWnd;
pWnd = AfxGetMainWnd();
RemoveTaskbarIcon(pWnd);
pWnd->ModifyStyle(WS_VISIBLE, 0);
mVisible = FALSE;
}
BOOL CMyAppDlg::RemoveTaskbarIcon(CWnd* pWnd)
{
LPCTSTR pstrOwnerClass = AfxRegisterWndClass(0);
// Create static invisible window
if (!::IsWindow(mWndInvisible.m_hWnd))
{
if (!mWndInvisible.CreateEx(0, pstrOwnerClass, _T(""),
WS_POPUP,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL, 0))
return FALSE;
}
pWnd->SetParent(&mWndInvisible);
return TRUE;
}
Here are the screen shots of dialog box. When I press the close or cross button, the dialog box which looks like this in the first place turns into this for like less than half a second and then disappears (hides).
If you show your dialog using CDialog::DoModal()
the framework will make sure your dialog is shown. There is only one way to prevent a modal dialog from being shown:
BEGIN_MESSAGE_MAP(CMyDialog, CDialog)
ON_WM_WINDOWPOSCHANGING()
END_MESSAGE_MAP()
BOOL CHiddenDialog::OnInitDialog()
{
CDialog::OnInitDialog();
m_visible = FALSE;
return TRUE;
}
void CHiddenDialog::OnWindowPosChanging(WINDOWPOS FAR* lpwndpos)
{
if (!m_visible)
lpwndpos->flags &= ~SWP_SHOWWINDOW;
CDialog::OnWindowPosChanging(lpwndpos);
}
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