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Turn off Top Most for form

Posted on 2013-12-05
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Last Modified: 2013-12-05
I have a  form that pings my website every 30 minutes
Usually i am doing something else so the form is not visible
On a failure I call SetWindowPos to put the form on top of other programs. The problem is
the form cannot be hidden without unloading it once it is put on top.
How can i overcome this?
the code I am using:
Private Const SWP_NOMOVE = 2
Private Const SWP_NOSIZE = 1
Private Const Flags = SWP_NOMOVE Or SWP_NOSIZE
Private Const HWND_TOPMOST = -1
Private Const HWND_NOTOPMOST = -2
Private Declare Function SetWindowPos Lib "user32" (ByVal hWnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long

Public Sub SetWindowOnTop(ByVal p_hWnd As Long, Optional ByVal p_bOnTop As Boolean = True)
    If p_bOnTop Then
        Call SetWindowPos(p_hWnd, HWND_TOPMOST, 0, 0, 0, 0, Flags)
    Else
        Call SetWindowPos(p_hWnd, HWND_NOTOPMOST, 0, 0, 0, 0, Flags)
    End If
End Sub

Calling it like this:
Call SetWindowOnTop(Me.hWnd, True)

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Question by:isnoend2001
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13 Comments
 
LVL 46

Expert Comment

by:Martin Liss
ID: 39698910
Where is p_bOnTop set? I ask because it looks like if it were False then topmost would be turned off.
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Accepted Solution

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GrahamSkan earned 250 total points
ID: 39698922
Have you tried calling it with the constant: HWND_BOTTOM?
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Author Comment

by:isnoend2001
ID: 39698956
MartinLiss missed setting that flag, that makes me wonder how it got stuck on top
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LVL 46

Expert Comment

by:Martin Liss
ID: 39698983
I did miss that, sorry, but try this then.

Call SetWindowOnTop(Me.hWnd, False)
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Author Comment

by:isnoend2001
ID: 39698994
does the HWND_NOTOPMOST turn off top_most ?
I am going to put the top most on a timer  with a sound
After so many seconds turn off top most
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Expert Comment

by:GrahamSkan
ID: 39699009
It does turn off top most, but it only sends the form to behind all the other topmost windows. It will still be in front of non-topmost windows.
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LVL 46

Expert Comment

by:Martin Liss
ID: 39699011
I'm actually not sure (even from the attached's description) so maybe you should try Graham's suggestion.
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Author Comment

by:isnoend2001
ID: 39699017
MartinLiss i had this but, the form was stuck on top, had to unload the form
If Counter >= seconds Then
    Timer1.Enabled = False
    sndPlaySound ByVal 0, 0 'stop sound
   Call SetWindowOnTop(Me.hWnd, False)
    End If

maybe the HWND_NOTOPMOST will work. I read somewhere that the topmost will not work correctly from the ide
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LVL 46

Assisted Solution

by:Martin Liss
Martin Liss earned 250 total points
ID: 39699027
Try (as Graham suggested)

Call SetWindowPos(Me.hWnd, HWND_BOTTOM, 0, 0, 0, 0, Flags)
0
 

Author Comment

by:isnoend2001
ID: 39699056
I wonder if widowstate = vbMinimized
would override topmost
I do not see a HWND_BOTTOM constant
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Author Closing Comment

by:isnoend2001
ID: 39699070
Thanks guys
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LVL 46

Expert Comment

by:Martin Liss
ID: 39699077
You can substitute the number 1 or add this declaration.

Private Const HWND_BOTTOM = 1
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LVL 46

Expert Comment

by:Martin Liss
ID: 39699081
You're welcome and I'm glad I was able to help.

Marty - MVP 2009 to 2013
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