[Gambas-user] Selecting a window

[John Rose]

I want the user to be able to click a point within one of the windows 
displayed on the desktop (i.e. not just Gambas forms) in order to select 
that window. The code below shows how to access properties of all windows:
Dim dWindow As DesktopWindow = Null
Desktop.Windows.Refresh()
For Each dWindow In Desktop.Windows
   If dWindow.Minimized = False Then
      Print "Window: Name=" & dWindow.Name & ", " & "X=" & dWindow.X & 
", Y=" & dWindow.Y & ", " & "Width=" & dWindow.Width & ", Height=" & 
dWindow.Height
   Endif
Next

The only way I've thought of is to define a transparent form covering 
the whole desktop with an associated mouse click event, which supplies 
the co-ordinates of the point clicked. Then by examination of each 
dWindow property (i.e. X, Y, Width, Height), one can determine which 
window has been clicked. Is that the best way? But how can one allow for 
the situation where the user has clicked a point which is within 2 
windows i.e. is there a property of dWindow which shows if that window 
is the 'top' one (i.e. covering the other one at that point)?