Programming Forums > Application Development > Visual Basic .NET

Wraith Daquell · Aug 3rd, 2005, 10:58 PM

Hello all.
I'm trying to create a Panel that will 'envelope' another control. It's supposed to grow seven pixels from the control's four borders; that I did (easy).
However, then, its Region needs to be set so that the middle is transparent so that the control will show through, even if the Panel is in the front of the z-order. In the following code, I should add that the Panel has an added field called Owner, the control that the Panel is surrounding.

(Toggle Plain Text)

  Dim MyGraph As New GraphicsPath
  'Add the rectangle of this instance
  MyGraph.AddRectangle(New Rectangle(Me.Location, Me.Size))
  MyGraph.AddRectangle(New Rectangle(Me.Owner.Location, Me.Owner.Size))
  Me.Region = New Region(MyGraph)

I've no clue as to why it doesn't work. Anybody think they have a clue?
(yes, I know my descriptions and code-posting were less than helpful)

Rory · Aug 23rd, 2005, 1:56 PM

Have you given the (unmanaged) API method a shot (i.e. SetWindowRegion et al) - if that fails then it means one or more of the controls isn't actually a window (as in a client/child on the parent window) but simply drawn on the form's device context, in which case you'd need to make it a layered window (EXT_LAYERED) using SetWindowLong. Hope this helps.

Aug 3rd, 2005, 10:58 PM	#1
Wraith Daquell Programmer Join Date: Feb 2005 Location: Limbo Posts: 39 Rep Power: 0	Regions/GraphicsPath Hello all. I'm trying to create a Panel that will 'envelope' another control. It's supposed to grow seven pixels from the control's four borders; that I did (easy). However, then, its Region needs to be set so that the middle is transparent so that the control will show through, even if the Panel is in the front of the z-order. In the following code, I should add that the Panel has an added field called Owner, the control that the Panel is surrounding. (Toggle Plain Text) Dim MyGraph As New GraphicsPath 'Add the rectangle of this instance MyGraph.AddRectangle(New Rectangle(Me.Location, Me.Size)) MyGraph.AddRectangle(New Rectangle(Me.Owner.Location, Me.Owner.Size)) Me.Region = New Region(MyGraph) Dim MyGraph As New GraphicsPath 'Add the rectangle of this instance MyGraph.AddRectangle(New Rectangle(Me.Location, Me.Size)) MyGraph.AddRectangle(New Rectangle(Me.Owner.Location, Me.Owner.Size)) Me.Region = New Region(MyGraph) I've no clue as to why it doesn't work. Anybody think they have a clue? (yes, I know my descriptions and code-posting were less than helpful) __________________ The meek will inherit the earth. -WDaquell

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Aug 23rd, 2005, 1:56 PM	#2
Rory Expert Programmer Join Date: Jan 2005 Location: London Posts: 542 Rep Power: 4	Have you given the (unmanaged) API method a shot (i.e. SetWindowRegion et al) - if that fails then it means one or more of the controls isn't actually a window (as in a client/child on the parent window) but simply drawn on the form's device context, in which case you'd need to make it a layered window (EXT_LAYERED) using SetWindowLong. Hope this helps.

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Programming Forums > Application Development > Visual Basic .NET

Regions/GraphicsPath