ContextHelp

This class changes the cursor to a query and puts the application into a ‘context-sensitive help mode’.

When the user left-clicks on a window within the specified window, a wxEVT_HELP event is sent to that control, and the application may respond to it by popping up some help.

For example:

contextHelp = wx.ContextHelp(myWindow)

There are a couple of ways to invoke this behaviour implicitly:

• Use the DIALOG_EX_CONTEXTHELP style for a dialog (Windows only). This will put a question mark in the titlebar, and Windows will put the application into context-sensitive help mode automatically, with further programming.
• Create a ContextHelpButton, whose predefined behaviour is to create a context help object. Normally you will write your application so that this button is only added to a dialog for non-Windows platforms (use DIALOG_EX_CONTEXTHELP on Windows).

Note that on Mac OS X, the cursor does not change when in context-sensitive help mode.

See also

HelpEvent, HelpController, ContextHelpButton

Inheritance Diagram

Inheritance diagram for class ContextHelp

Methods Summary

__init__	Constructs a context help object, calling BeginContextHelp if doNow is True (the default).
BeginContextHelp	Puts the application into context-sensitive help mode.
EndContextHelp	Ends context-sensitive help mode.

Class API

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class ContextHelp(Object)

This class changes the cursor to a query and puts the application into a ‘context-sensitive help mode’.

Possible constructors:

ContextHelp(window=None, doNow=True)

Methods

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__init__(self, window=None, doNow=True)

Constructs a context help object, calling BeginContextHelp if doNow is True (the default).

If window is None, the top window is used.

Parameters:

• window (Window) –
• doNow (bool) –

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BeginContextHelp(self, window)

Puts the application into context-sensitive help mode.

window is the window which will be used to catch events; if None, the top window will be used.

Returns True if the application was successfully put into context-sensitive help mode. This function only returns when the event loop has finished.

Parameters:window (Window) – Return type:bool

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EndContextHelp(self)

Ends context-sensitive help mode.

Not normally called by the application.

Return type:bool