How Tos

Last reviewed: 12/15/2011

Article ID: H071112

HOW: Developing Delphi applications that manage grammars

The information in this article applies to:

  • GrammarKit 4


You can develop Delphi applications that manage grammars using your favorite version of Delphi.

More Information

GrammarKit includes a Delphi Pascal source file GrammarKit.pas comprised of the Delphi classes that manage grammars. It also includes a Delphi Pascal source file ChantShared.pas comprised of common Delphi classes that all Chant libraries use.

To access the GrammarKit Delphi classes within your application, first add a project reference to the GrammarKit Delphi source file:

  1. Within your Delphi project, select Project Options.
  2. Select the Delphi compiler options.
  3. Add Search path reference to the GrammarKit unit source file directory: C:\Program Files\Chant\GrammarKit 4\Win32\Delphi\source.
  4. Add unit output path reference to the local directory with a period '.' character.

To access the GrammarKit Delphi classes within your application, add a reference to the ChantShared and GrammarKit units in your uses clause:

unit Unit1;


Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ChantShared, GrammarKit;

Add an event handler declaration and Object instance variable to the application declarations:

TForm1 = class(TForm)
{ Private declarations }
{ Public declarations }
procedure OnHasEvent(var msg: TMessage);
    message WM_APP+4;

Form1: TForm1;
ChantGM1: TChantGM;

Object Instantiation

Instantiate an instance, set the license and serial properties, and set the event handler message.

procedure TForm1.FormCreate(Sender: TObject);
ChantGM1 := TChantGM.Create();
// Set license properties

// Define the HasEvent callback message
ChantGM1.SetWindowMessage(Handle, WM_APP+4, 0, 0);


Event Callbacks

Event callbacks are the mechanism in which the component library communications information back to the application such as compilation is complete or there was an error.

procedure TForm1.OnHasEvent(var msg: TMessage);
aTChantGMEvent: TChantGMEvent;
i: Integer;
numberOfEvents := ChantGM1.GetResourceCount(CSREvent,0,0);
for i := 0 to numberOfEvents - 1 do
    // Get the event from the event queue
    aTChantGMEvent := ChantGM1.GetChantGMEvent(0);
    case tEvent.ChantCallback of



    // Remove the event from the event queue

Deployment Checklist

When you are ready to deploy your Delphi application, you need to ensure you have a valid license, bundle the correct Chant component library, and configure your installation properly on the target system. Review the following checklist before deploying your applications:

  • You may deploy your Delphi application to any system with a valid license from the Chant.
  • Copy CGrammarKit.dll to the target system and place in the same directory with your application.

Sample Projects

Delphi sample projects are installed at the following location:

  • My Documents\Chant GrammarKit 4\Win32\Delphi\RS 2007,
  • My Documents\Chant GrammarKit 4\Win32\Delphi\RS 2009,
  • My Documents\Chant GrammarKit 4\Win32\Delphi\RS 2010,
  • My Documents\Chant GrammarKit 4\Win32\Delphi\RS XE,
  • My Documents\Chant GrammarKit 4\Win32\Delphi\RS XE2, and
  • My Documents\Chant GrammarKit 4\Win32\Delphi\RS XE3.