Binaryworld - Topmost windows ... [ VB -> Forms & Controls ]

This is an evergreen, but it's still popular. It is very easy to create a window that always stays on top of the others, thanks to the SetWindowPos API function. Here is a general procedure that can be called to make a form the topmost window and to revert to the normal status. This capability is extremely useful when implementing palettes, tool windows and the like.

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Private Declare Function SetWindowPos Lib "user32" Alias "SetWindowPos" (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

Sub SetTopmostWindow(ByVal hWnd As Long, Optional topmost As Boolean = True)
  Const HWND_NOTOPMOST = -2
  Const HWND_TOPMOST = -1
  Const SWP_NOMOVE = &H2
  Const SWP_NOSIZE = &H1
  SetWindowPos hWnd, IIf(topmost, HWND_TOPMOST, HWND_NOTOPMOST), 0, 0, 0, 0, _
    SWP_NOMOVE + SWP_NOSIZE
End Sub

When you wish to create a topmost window simply call this procedure passing the handle of the window:

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SetTopmostWindow Me.hWnd

When you want to return to the normal status, call the same function passing False as the second argument:

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SetTopmostWindow Me.hWnd, False

You do not need to explicitly revert to the normal status before closing the window.