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[Delphi] Transparent form preserving alpha of controls?

 
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LolSalad
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PostPosted: Sat Aug 30, 2008 1:46 am    Post subject: [Delphi] Transparent form preserving alpha of controls? Reply with quote
What I want is this. I've been able to achieve this effect with the following code:
Code:
procedure TForm1.CreateParams(var Params: TCreateParams);
begin
  inherited CreateParams(Params);
  Params.ExStyle := Params.ExStyle OR WS_EX_TRANSPARENT OR WS_EX_LAYERED;
end;

procedure TForm1.FormCreate(Sender: TObject);
begin
  Brush.Style := bsClear;
  BorderStyle := bsNone;
end;


Problem is, moving the form carries the rect that was below the form before I moved it.

Can anyone give me information on how I can achieve a fully transparent form that preserves the alpha of the controls, and supports moving / resizing of the window?
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Noz3001
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PostPosted: Sat Aug 30, 2008 3:22 am    Post subject: Reply with quote
How about this?
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LolSalad
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PostPosted: Sat Aug 30, 2008 5:07 pm    Post subject: Reply with quote
SetWindowRgn sets the region of the window that is painted, which includes the controls; what I need is to somehow make the form background transparent, but the controls visible, and preserve the varying transparency of the controls.
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