Componentes.Terceros.jvcl/official/3.00/examples/JvPlugin/1SimplePlugin/PlugInDemoU.pas

163 lines
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{******************************************************************
JEDI-VCL Demo
Copyright (C) 2002 Project JEDI
Original author:
Contributor(s):
You may retrieve the latest version of this file at the JEDI-JVCL
home page, located at http://jvcl.sourceforge.net
The contents of this file are used with permission, subject to
the Mozilla Public License Version 1.1 (the "License"); you may
not use this file except in compliance with the License. You may
obtain a copy of the License at
http://www.mozilla.org/MPL/MPL-1_1Final.html
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 PlugInDemoU;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
JvPluginManager, StdCtrls, Buttons, Menus, ExtCtrls, ImgList, JvComponent;
type
TForm1 = class(TForm)
uilPluginManager: TJvPluginManager;
clbPlugins: TListBox;
MainMenu1: TMainMenu;
Plugin1: TMenuItem;
lbStatus: TListBox;
Panel1: TPanel;
Panel2: TPanel;
Label1: TLabel;
labAuthor: TLabel;
Label2: TLabel;
labDescription: TLabel;
Label3: TLabel;
Label4: TLabel;
File1: TMenuItem;
Exit1: TMenuItem;
Help1: TMenuItem;
About1: TMenuItem;
SendMessagetoPlugins1: TMenuItem;
N1: TMenuItem;
Splitter1: TSplitter;
procedure FormCreate(Sender: TObject);
procedure uilPluginManagerBeforeLoad(Sender: TObject; Filename: String;
var AllowLoad: Boolean);
procedure uilPluginManagerBeforeLoading(Sender: TObject);
procedure clbPluginsClick(Sender: TObject);
procedure clbPluginsDblClick(Sender: TObject);
procedure Exit1Click(Sender: TObject);
procedure About1Click(Sender: TObject);
procedure SendMessagetoPlugins1Click(Sender: TObject);
procedure uilPluginManagerAfterLoad(Sender: TObject; FileName: String;
const ALibHandle: Cardinal; var AllowLoad: Boolean);
procedure uilPluginManagerNewCommand(Sender: TObject; ACaption, AHint,
AData: String; AShortCut: TShortCut; ABitmap: TBitmap;
AEvent: TNotifyEvent);
private
{ Private declarations }
public
NumButtons : integer;
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.FormCreate(Sender: TObject);
begin
uilPluginManager.LoadPlugins;
uilPluginManager.GetLoadedPlugins(clbPlugins.Items);
end;
procedure TForm1.uilPluginManagerBeforeLoad(Sender: TObject;
Filename: String; var AllowLoad: Boolean);
begin
lbStatus.Items.Add('Loading Plug-in: ' + Filename);
end;
procedure TForm1.uilPluginManagerBeforeLoading(Sender: TObject);
begin
lbStatus.Items.Add('Starting to load Plug-ins');
end;
procedure TForm1.clbPluginsClick(Sender: TObject);
begin
if clbPlugins.ItemIndex = -1 then Exit;
labAuthor.Caption := uilPluginManager.Plugins[clbPlugins.ItemIndex].Author;
labDescription.Caption := uilPluginManager.Plugins[clbPlugins.ItemIndex].Description;
end;
procedure TForm1.clbPluginsDblClick(Sender: TObject);
begin
uilPluginManager.Plugins[clbPlugins.ItemIndex].Configure;
end;
procedure TForm1.Exit1Click(Sender: TObject);
begin
Close;
end;
procedure TForm1.About1Click(Sender: TObject);
begin
ShowMessage('A simple host application for demoing JEDI Plug-ins.'#13#10#13#10'(c) 2002, Project JEDI.');
end;
procedure TForm1.SendMessagetoPlugins1Click(Sender: TObject);
begin
uilPluginManager.SendMessage(1000, InputBox('Enter message to send to plugin', 'Message', 'Your message here'));
end;
procedure TForm1.uilPluginManagerAfterLoad(Sender: TObject;
FileName: String; const ALibHandle: Cardinal; var AllowLoad: Boolean);
begin
uilPluginManager.GetLoadedPlugins(clbPlugins.Items);
lbStatus.Items.Add('Finished loading Plug-in: ' + Filename);
end;
procedure TForm1.uilPluginManagerNewCommand(Sender: TObject; ACaption,
AHint, AData: String; AShortCut: TShortCut; ABitmap: TBitmap;
AEvent: TNotifyEvent);
var
Item : TMenuItem;
begin
lbStatus.Items.Add('Adding command: ' + ACaption);
Item := NewItem(ACaption, scNone, False, True, AEvent, 0, '');
MainMenu1.Items[1].Add(Item);
with TSpeedButton.Create(Panel1) do
begin
Top := 4;
Left := 4+(NumButtons * Width);
Parent := Panel1;
Hint := AHint;
if ABitmap <> nil then
Glyph.Handle := ABitmap.Handle;
try
NumGlyphs := Glyph.Width div Glyph.Height;
except
end;
OnClick := AEvent;
end; // with
Inc(NumButtons);
end;
end.