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  1. Thread Starter
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    [RESOLVED] Semi-transparent form with opaque controls

    Hi there,

    I have a 75% transparent form and I would like the controls and elements that I place on it to be 100% opaque. I've searched but didn't turn up any results.

    Any help is greatly appreciated.

    David

  2. #2
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    Re: Semi-transparent form with opaque controls

    I don't believe you can set the opacity of individual controls, only the form I think, is that what you meant?

  3. Thread Starter
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    Re: Semi-transparent form with opaque controls

    Yeah, that's what I'm looking for.

    I've drawn the same conclusion, though I figured there must be an API or something that could assist me?

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    Re: Semi-transparent form with opaque controls

    You can do this by using two forms, one on top of the other. The bottom form (which is your main form) is partly opaque. The top form uses the TransparencyKey property to make everything but the controls invisible. We had a thread on much the same subject about three weeks ago ( http://www.vbforums.com/showthread.php?t=586364) but since then I have discovered that forms have a method which makes it all rather easy: AddOwnedForm.

    Here's an example. Add two Forms to your project (BottomForm and TopForm), make BottomForm the startup form, and add whatever controls you like to TopForm.
    Code:
    Public Class BottomForm
    
        Private Sub BottomForm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    
            'These are properties you could also set in the Designer
            Me.Opacity = 0.6F
            Me.BackColor = Color.Black 'for example
    
            TopForm.FormBorderStyle = Windows.Forms.FormBorderStyle.None
            TopForm.BackColor = Color.Magenta 'Choose any colour that does not appear in your controls
            TopForm.TransparencyKey = TopForm.BackColor
            TopForm.ShowInTaskbar = False
    
            'You have to do this in code:
            Me.AddOwnedForm(TopForm)
            TopForm.Show()
    
        End Sub
    
        Private Sub AlignForms(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.SizeChanged, Me.Move, Me.Layout
            TopForm.Location = Me.PointToScreen(Point.Empty)
            TopForm.Size = Me.ClientSize
        End Sub
    
    End Class
    Appreciation appreciated.
    Cheers, BB
    Last edited by boops boops; Oct 30th, 2009 at 06:40 AM. Reason: correction to TopForm.Location in AlignForms

  5. #5

    Re: Semi-transparent form with opaque controls

    Perfect! Exactly what I was looking for.

    Thanks a ton


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