System.HelpIntfs.ICustomHelpViewer
Delphi
ICustomHelpViewer = interface(IInterface)
C++
__interface INTERFACE_UUID("{B0FC9364-5F0E-11D3-A3B9-00C04F79AD3A}") ICustomHelpViewer : public System::IInterface
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
interface class |
public | System.HelpIntfs.pas System.HelpIntfs.hpp |
System.HelpIntfs | System.HelpIntfs |
Description
Help Viewer that provides access to the Help System. Its methods display a table of contents and Help topics specified by keywords.
A Help Viewer is an object that handles application Help requests passed to it by the Help System on behalf of an application. A Help Viewer is typically a wrapper for an external application, such as a Help engine or web browser.
The Help Viewer class must implement the ICustomHelpViewer interface, or one of its descendant interfaces, IExtendedHelpViewer and ISpecialWinHelpViewer . The Help System uses methods from these interfaces to pass Help requests to the Help Viewer.
To use a Help Viewer, an application must call the global RegisterViewer function.
Note: ISpecialWinHelpViewer is only provided with Windows products. Do not use it in cross-platform applications.