Always On Top

DORIE@ris.risinc.com
Thursday, April 25, 1996

Environment: VC++ 4.0
Targeting: Win95 and PowerMac

I am trying to accomplish the same behavior of the Infoviewer Query 
Results window when the pushpin button is set. That is, have the 
window remain visible when not active.

I have a CBrowserFrame which is a descendant of CMDIChildWnd.
This CBrowserFrame is the parent of a CToolbar which has a button 
ID_KEEPVISIBLE.  The following is the code I wrote for ON_COMMAND.

void CBrowserFrame::OnKeepVisible()
{
	if(m_bOnTop == TRUE )
		SetWindowPos(&NoTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);
	else
		SetWindowPos(&wndTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);	
	m_bOnTop = !m_bOnTop;
}

While the SetWindowPos returns TRUE nothing appears to change.  My 
window does not stay active when I switch to another window.  As an 
experiment I tried to SetWindowPos with &wndBottom and then return it 
to the top with SetWindowPos using &wndTopMost. The window does 
become the bottom window but does not come back to the top or become 
the topmost window.
Does anyone know of any good examples of this or know why it would 
not be working?

TIA
Dorie Hannan
Dorie@ris.risinc.com

---

Frederic Steppe -- FredericS@msn.com
Sunday, April 28, 1996

>Environment: VC++ 4.0 Targeting: Win95 and PowerMac
>
>I am trying to accomplish the same behavior of the Infoviewer Query 
>Results window when the pushpin button is set. That is, have the 
>window remain visible when not active.

>	if(m_bOnTop == TRUE )
>		SetWindowPos(&NoTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);
>	else
>		SetWindowPos(&wndTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);	


Reading the VC++ 4.0 help files, I found this :

If neither SWP_NOACTIVATE nor SWP_NOZORDER is specified (that is, when the 
application requests that a window be simultaneously activated and placed in 
the specified Z-order), the value specified in pWndInsertAfter is used only in 
the following circumstances:
·	Neither &wndTopMost nor &wndNoTopMost is specified in the pWndInsertAfter 
parameter.
·	This window is not the active window.

As far as I can understand, the pWndInsertAfter is ignored if you don't 
specify either SWP_NOACTIVATE or SWP_NOZORDER.  You should try to include the 
SWP_NOACTIVATE flag.

Another possible solution is to work on the extended window style  :

	long dwExStyle = ::GetWindowLong(m_hWnd, GWL_EXSTYLE);

	if(m_bOnTop == TRUE )
		dwExStyle &= ~WS_EX_TOPMOST;
	else
		dwExStyle |= WS_EX_TOPMOST;

	::SetWindowLong(m_hWnd, GWL_EXSTYLE, dwExStyle);

Hope it will help.

Frederic Steppe (frederics@msn.com)

---

Veeraraghavan -- veera@hiso.honeywell.soft.net
Monday, April 29, 1996

hi,

        Instead of SetwindowPos Try using SetWindowLong with GWL_EXSTYLE
parameter and specify WS_EX_TOPMOST.

Tell me if this work.

Thanks
Veera

At 03:56 PM 4/25/96 PST, you wrote:
>Environment: VC++ 4.0
>Targeting: Win95 and PowerMac
>
>I am trying to accomplish the same behavior of the Infoviewer Query 
>Results window when the pushpin button is set. That is, have the 
>window remain visible when not active.
>
>I have a CBrowserFrame which is a descendant of CMDIChildWnd.
>This CBrowserFrame is the parent of a CToolbar which has a button 
>ID_KEEPVISIBLE.  The following is the code I wrote for ON_COMMAND.
>
>void CBrowserFrame::OnKeepVisible()
>{
>	if(m_bOnTop == TRUE )
>		SetWindowPos(&NoTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);
>	else
>		SetWindowPos(&wndTopMost,0,0,0,0,SWP_NOSIZE|SWP_NOMOVE);	
>	m_bOnTop = !m_bOnTop;
>}
>
>While the SetWindowPos returns TRUE nothing appears to change.  My 
>window does not stay active when I switch to another window.  As an 
>experiment I tried to SetWindowPos with &wndBottom and then return it 
>to the top with SetWindowPos using &wndTopMost. The window does 
>become the bottom window but does not come back to the top or become 
>the topmost window.
>Does anyone know of any good examples of this or know why it would 
>not be working?
>
>TIA
>Dorie Hannan
>Dorie@ris.risinc.com
>
WM_THANKS|WM_REGARDS 

Veera
Sr.Software Engineer
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