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CEF4Delphi/source/uCEFWindowParent.pas

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// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
// Copyright � 2020 Salvador Diaz Fau. All rights reserved.
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//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFWindowParent;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
uses
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{$IFDEF DELPHI16_UP}
{$IFDEF MSWINDOWS}WinApi.Windows, WinApi.Messages,{$ENDIF} System.Classes, Vcl.Controls, Vcl.Graphics,
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{$ELSE}
{$IFDEF MSWINDOWS}Windows,{$ENDIF} Classes, Forms, Controls, Graphics,
{$IFDEF FPC}
LCLProc, LCLType, LCLIntf, LResources, LMessages, InterfaceBase,
{$ELSE}
Messages,
{$ENDIF}
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{$ENDIF}
uCEFWinControl, uCEFTypes, uCEFInterfaces;
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type
{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
TCEFWindowParent = class(TCEFWinControl)
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protected
{$IFDEF MSWINDOWS}
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procedure WndProc(var aMessage: TMessage); override;
{$ENDIF}
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end;
{$IFDEF FPC}
procedure Register;
{$ENDIF}
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implementation
uses
uCEFMiscFunctions, uCEFClient, uCEFConstants;
{$IFDEF MSWINDOWS}
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procedure TCEFWindowParent.WndProc(var aMessage: TMessage);
var
TempHandle : THandle;
begin
case aMessage.Msg of
WM_SETFOCUS:
begin
TempHandle := ChildWindowHandle;
if (TempHandle <> 0) then PostMessage(TempHandle, WM_SETFOCUS, aMessage.WParam, 0);
inherited WndProc(aMessage);
end;
WM_ERASEBKGND:
if (ChildWindowHandle = 0) then inherited WndProc(aMessage);
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CM_WANTSPECIALKEY:
if not(TWMKey(aMessage).CharCode in [VK_LEFT .. VK_DOWN, VK_RETURN, VK_ESCAPE]) then
aMessage.Result := 1
else
inherited WndProc(aMessage);
WM_GETDLGCODE : aMessage.Result := DLGC_WANTARROWS or DLGC_WANTCHARS;
else inherited WndProc(aMessage);
end;
end;
{$ENDIF}
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{$IFDEF FPC}
procedure Register;
begin
{$I res/tcefwindowparent.lrs}
RegisterComponents('Chromium', [TCEFWindowParent]);
end;
{$ENDIF}
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end.