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  • 透明输入框

    Code

     procedure HandleCTLColorEdit(var Msg: TWMCTLCOLOREDIT);message WM_CTLCOLOREDIT;

    procedure TForm1.Button2Click(Sender: TObject);
    var
      BMP: TBitmap;
    begin
      BMP := TBitmap.Create;
      BMP.LoadFromFile('C:\Documents and Settings\Administrator\桌面\未命名.bmp');
      Memo1.Brush.Bitmap := BMP;
      Memo1.Repaint;
      Bmp.Free;
    end;

    procedure TForm1.HandleCTLColorEdit(var Msg: TWMCTLCOLOREDIT);
    begin
      if Msg.ChildWnd = Memo1.Handle then begin
        SetBkMode(Msg.ChildDC, TRANSPARENT);
        Msg.Result := Memo1.Brush.Handle;
      end;

    end;

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  • 原文地址:https://www.cnblogs.com/chengxin1982/p/1457131.html
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