Force.com Apex Code Developer's Guide

Getting Started
Writing Apex
Ways to Invoke Apex
Finishing Touches
Reference
Apex DML Operations
ApexPages Namespace
Approval Namespace
Auth Namespace
Canvas Namespace
ApplicationContext Interface
CanvasLifecycleHandler Interface
ContextTypeEnum Enum
EnvironmentContext Interface
RenderContext Interface
Test Class
Canvas Exceptions
ChatterAnswers Namespace
ConnectApi Namespace
Database Namespace
Datacloud Namespace
DataSource Namespace
Dom Namespace
Flow Namespace
KbManagement Namespace
Messaging Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
Schema Namespace
Search Namespace
Site Namespace
Support Namespace
System Namespace
TerritoryMgmt Namespace
UserProvisioning Namespace
Appendices
Glossary
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Canvas Namespace

The Canvas namespace provides an interface and classes for canvas apps in Salesforce.

The following are the interfaces and classes in the Canvas namespace.