107 lines
3.1 KiB
ObjectPascal
107 lines
3.1 KiB
ObjectPascal
{-----------------------------------------------------------------------------
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The contents of this file are subject to the Mozilla Public License
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Version 1.1 (the "License"); you may not use this file except in compliance
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with the License. You may obtain a copy of the License at
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http://www.mozilla.org/MPL/MPL-1.1.html
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Software distributed under the License is distributed on an "AS IS" basis,
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WITHOUT WARRANTY OF ANY KIND, either expressed or implied. See the License for
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the specific language governing rights and limitations under the License.
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The Original Code is: JvgTransparentMemo.PAS, released on 2003-01-15.
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The Initial Developer of the Original Code is Andrey V. Chudin, [chudin att yandex dott ru]
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Portions created by Andrey V. Chudin are Copyright (C) 2003 Andrey V. Chudin.
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All Rights Reserved.
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Contributor(s):
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Michael Beck [mbeck att bigfoot dott com].
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You may retrieve the latest version of this file at the Project JEDI's JVCL home page,
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located at http://jvcl.sourceforge.net
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Known Issues:
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-----------------------------------------------------------------------------}
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// $Id: JvgTransparentMemo.pas 10612 2006-05-19 19:04:09Z jfudickar $
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unit JvgTransparentMemo;
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{$I jvcl.inc}
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{$I windowsonly.inc}
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interface
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uses
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{$IFDEF USEJVCL}
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{$IFDEF UNITVERSIONING}
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JclUnitVersioning,
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{$ENDIF UNITVERSIONING}
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Windows, Messages, SysUtils, Classes, Controls, Forms, StdCtrls,
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JVCLVer;
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{$ELSE}
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Windows, Messages, SysUtils, Classes, Controls, Forms, StdCtrls;
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{$ENDIF USEJVCL}
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type
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TJvgTransparentMemo = class(TMemo)
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private
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{$IFDEF USEJVCL}
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FAboutJVCL: TJVCLAboutInfo;
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{$ENDIF USEJVCL}
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procedure WMPaint(var Msg: TWMPaint); message WM_PAINT;
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procedure WMEraseBkgnd(var Msg: TWMEraseBkgnd); message WM_ERASEBKGND;
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public
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procedure CreateParams(var Params: TCreateParams); override;
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published
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{$IFDEF USEJVCL}
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property AboutJVCL: TJVCLAboutInfo read FAboutJVCL write FAboutJVCL stored False;
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{$ENDIF USEJVCL}
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end;
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{$IFDEF USEJVCL}
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{$IFDEF UNITVERSIONING}
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const
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UnitVersioning: TUnitVersionInfo = (
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RCSfile: '$URL: https://jvcl.svn.sourceforge.net/svnroot/jvcl/tags/JVCL3_32/run/JvgTransparentMemo.pas $';
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Revision: '$Revision: 10612 $';
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Date: '$Date: 2006-05-19 21:04:09 +0200 (ven., 19 mai 2006) $';
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LogPath: 'JVCL\run'
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);
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{$ENDIF UNITVERSIONING}
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{$ENDIF USEJVCL}
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implementation
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procedure TJvgTransparentMemo.CreateParams(var Params: TCreateParams);
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begin
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inherited CreateParams(Params);
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Params.ExStyle := Params.ExStyle or WS_EX_TRANSPARENT;
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end;
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procedure TJvgTransparentMemo.WMPaint(var Msg: TWMPaint);
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var
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DC: HDC;
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begin
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DC := GetDC(Handle);
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SetBkMode(DC, Windows.TRANSPARENT);
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ReleaseDC(Handle, DC);
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inherited;
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end;
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procedure TJvgTransparentMemo.WMEraseBkgnd(var Msg: TWMEraseBkgnd);
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begin
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end;
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{$IFDEF USEJVCL}
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{$IFDEF UNITVERSIONING}
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initialization
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RegisterUnitVersion(HInstance, UnitVersioning);
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finalization
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UnregisterUnitVersion(HInstance);
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{$ENDIF UNITVERSIONING}
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{$ENDIF USEJVCL}
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end.
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