Detailed Description

This is an alias for one of a family of help controller classes which is most appropriate for the current platform.

A help controller allows an application to display help, at the contents or at a particular topic, and shut the help program down on termination. This avoids proliferation of many instances of the help viewer whenever the user requests a different topic via the application's menus or buttons.

Typically, an application will create a help controller instance when it starts, and immediately call wxHelpController::Initialize to associate a filename with it. The help viewer will only get run, however, just before the first call to display something.

Most help controller classes actually derive from wxHelpControllerBase and have names of the form wxXXXHelpController or wxHelpControllerXXX. An appropriate class is aliased to the name wxHelpController for each platform, as follows:

On desktop Windows, wxCHMHelpController is used (MS HTML Help).
On Windows CE, wxWinceHelpController is used.
On all other platforms, wxHtmlHelpController is used if wxHTML is compiled into wxWidgets; otherwise wxExtHelpController is used (for invoking an external browser).

The remaining help controller classes need to be named explicitly by an application that wishes to make use of them.

The following help controller classes are defined:

wxWinHelpController, for controlling Windows Help.
wxCHMHelpController, for controlling MS HTML Help. To use this, you need to set wxUSE_MS_HTML_HELP to 1 in setup.h and have the htmlhelp.h header from Microsoft's HTML Help kit. (You don't need the VC++-specific htmlhelp.lib because wxWidgets loads necessary DLL at runtime and so it works with all compilers.)
wxBestHelpController, for controlling MS HTML Help or, if Microsoft's runtime is not available, wxHtmlHelpController. You need to provide both CHM and HTB versions of the help file. For wxMSW only.
wxExtHelpController, for controlling external browsers under Unix. The default browser is Netscape Navigator. The 'help' sample shows its use.
wxWinceHelpController, for controlling a simple .htm help controller for Windows CE applications.
wxHtmlHelpController, a sophisticated help controller using wxHTML, in a similar style to the Microsoft HTML Help viewer and using some of the same files. Although it has an API compatible with other help controllers, it has more advanced features, so it is recommended that you use the specific API for this class instead. Note that if you use .zip or .htb formats for your books, you must add this line to your application initialization:
```
 wxFileSystem::AddHandler(new wxArchiveFSHandler); 
```
or nothing will be shown in your help window.

Library: wxCore

Category: Help

参照:: wxHtmlHelpController, wxHTML Overview

Public Member Functions
	wxHelpController (wxWindow *parentWindow=NULL)
	Constructs a help instance object, but does not invoke the help viewer.

List of all members.

Constructor & Destructor Documentation

wxHelpController::wxHelpController ( wxWindow * parentWindow = NULL )

Constructs a help instance object, but does not invoke the help viewer.

If you provide a window, it will be used by some help controller classes, such as wxCHMHelpController, wxWinHelpController and wxHtmlHelpController, as the parent for the help window instead of the value of wxApp::GetTopWindow.

You can also change the parent window later with SetParentWindow().

Detailed Description

Public Member Functions

Constructor & Destructor Documentation