| Prev | Next | Previous Chapter | End of Chapter | Contents | Glossary | Index | Comments | (1 out of 9)

Chapter 7

Shows how to write GMS callback procedures and supply them with the information that they need.

Introduction

Types of GMS Callback Procedures

Callback Procedure Syntax

Using Callback Procedure Arguments

Obtaining the G2 Window

Obtaining the Initiating Item for a Popup Menu

Obtaining Menu Entries and Attribute Values

Menu Levels

Obtaining Menu Indexes from an Activation Path

Obtaining Menu Entry Attributes in an Activation Context

Obtaining All Cascade Menu Entries

Providing Additional Data to a Callback Procedure

Storing Information in Template Keys

Using Template Keys to Access Information

Other Strategies for Providing Data to a Callback

Distributing Data over Multiple Menu Templates

Specifying a Default Callback Procedure

Invoking a Procedure When a Menu is Displayed or Hidden

Invoking a Procedure on Selection and Unselection

| Prev | Next | Previous Chapter | End of Chapter | Contents | Glossary | Index | Comments | (1 out of 9)