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88 lines
1.9 KiB
ObjectPascal
88 lines
1.9 KiB
ObjectPascal
{
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Abstract:
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This example demonstrates the chm help components.
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TCHMLHelpDatabase handles help for a single chm file - it contains the
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mapping from Keyword to page.
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TLHelpConnector starts "lhelp" a chm viewer written in pure pascal.
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How was the example created:
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Put a TCHMHelpDatabase on a form.
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Set AutoRegister to true.
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Set KeywordPrefix to 'example'
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Set Filename to the path of the chm file '../../../tools/chmaker/example.chm'
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You can create the example.chm with chmmaker (see the REDAME.txt
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in the chmmaker directory).
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Put a TLHelpConnector on the form.
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Set AutoRegister to true.
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Set LHelpPath to '../lhelp/lhelp'.
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Put a TEdit on a form.
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Set HelpType to htKeyword
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Set HelpKeyword to 'example/MainPage.html'
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Run the program.
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Focus the edit field and press F1. lhelp will be started. lhelp will load
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example.chm and shows the page MainPage.html.
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}
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unit CtxCHMHelpUnit1;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, StdCtrls,
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HelpIntfs, LazHelpIntf, LazHelpCHM;
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const
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{$IFDEF Darwin}
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HelpShortcut = #$e2#$8c#$98'?';
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{$ELSE}
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HelpShortcut = 'F1';
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{$ENDIF}
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type
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{ TForm1 }
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TForm1 = class(TForm)
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CHMHelpDatabase1: TCHMHelpDatabase;
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Edit1: TEdit;
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Edit2: TEdit;
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LHelpConnector1: TLHelpConnector;
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ShowHelpButton: TButton;
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procedure FormCreate(Sender: TObject);
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procedure ShowHelpButtonClick(Sender: TObject);
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private
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public
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end;
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var
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Form1: TForm1;
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implementation
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{ TForm1 }
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procedure TForm1.FormCreate(Sender: TObject);
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begin
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CreateLCLHelpSystem;
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Edit1.Text:='Edit1 - Press '+HelpShortcut+' for help';
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Edit2.Text:='Edit2 - Press '+HelpShortcut+' for help';
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end;
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procedure TForm1.ShowHelpButtonClick(Sender: TObject);
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begin
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// This demonstrates how to show a help item manually:
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ShowHelpOrErrorForKeyword('','example/AboutLazarus.html');
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end;
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{$R *.lfm}
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end.
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