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.
There are a couple of ways to invoke this behaviour implicitly:
Note that on Mac OS X, the cursor does not change when in context-sensitive help mode.
wxHelpEvent, wxHelpController, wxContextHelpButton
Constructs a context help object, calling BeginContextHelp if doNow is true (the default).
If window is NULL, the top window is used.
Destroys the context help object.
Puts the application into context-sensitive help mode. window is the window which will be used to catch events; if NULL, 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.
Ends context-sensitive help mode. Not normally called by the application.