git.saurik.com Git - wxWidgets.git/blame_incremental

... / ...

Commit	Line	Data
	1	\section{\class{wxIdleEvent}}\label{wxidleevent}
	2
	3	This class is used for idle events, which are generated when the system is idle.
	4
	5	By default, idle events are sent to all windows. If this is causing a significant
	6	overhead in your application, you can call \helpref{wxIdleEvent::SetMode}{wxidleeventsetmode} with
	7	the value wxIDLE\_PROCESS\_SPECIFIED, and set the wxWS\_EX\_PROCESS\_IDLE extra
	8	window style for every window which should receive idle events.
	9
	10	The function \helpref{wxWindow::OnInternalIdle}{wxwindowoninternalidle} is
	11	also provided for internal purposes, and cannot be disabled. wxUpdateUIEvents
	12	are sent from OnInternalIdle.
	13
	14	\wxheading{Derived from}
	15
	16	\helpref{wxEvent}{wxevent}\\
	17	\helpref{wxObject}{wxobject}
	18
	19	\wxheading{Include files}
	20
	21	<wx/event.h>
	22
	23	\wxheading{Event table macros}
	24
	25	To process an idle event, use this event handler macro to direct input to a member
	26	function that takes a wxIdleEvent argument.
	27
	28	\twocolwidtha{7cm}
	29	\begin{twocollist}\itemsep=0pt
	30	\twocolitem{{\bf EVT\_IDLE(func)}}{Process a wxEVT\_IDLE event.}
	31	\end{twocollist}%
	32
	33	\wxheading{Remarks}
	34
	35	Idle events can be caught by the wxApp class, or by top-level window classes.
	36
	37	\wxheading{See also}
	38
	39	\helpref{Event handling overview}{eventhandlingoverview}, \helpref{wxUpdateUIEvent}{wxupdateuievent},
	40	\helpref{wxWindow::OnInternalIdle}{wxwindowoninternalidle}
	41
	42	\latexignore{\rtfignore{\wxheading{Members}}}
	43
	44	\membersection{wxIdleEvent::wxIdleEvent}
	45
	46	\func{}{wxIdleEvent}{\void}
	47
	48	Constructor.
	49
	50	\membersection{wxIdleEvent::CanSend}\label{wxidleeventcansend}
	51
	52	\func{static bool}{CanSend}{\param{wxWindow*}{ window}}
	53
	54	Returns {\tt true} if it is appropriate to send idle events to
	55	this window.
	56
	57	This function looks at the mode used (see \helpref{wxIdleEvent::SetMode}{wxidleeventsetmode}),
	58	and the wxWS\_EX\_PROCESS\_IDLE style in {\it window} to determine whether idle events should be sent to
	59	this window now. By default this will always return {\tt true} because
	60	the update mode is initially wxIDLE\_PROCESS\_ALL. You can change the mode
	61	to only send idle events to windows with the wxWS\_EX\_PROCESS\_IDLE extra window style set.
	62
	63	\wxheading{See also}
	64
	65	\helpref{wxIdleEvent::SetMode}{wxidleeventsetmode}
	66
	67	\membersection{wxIdleEvent::GetMode}\label{wxidleeventgetmode}
	68
	69	\func{static wxIdleMode}{GetMode}{\void}
	70
	71	Static function returning a value specifying how wxWindows
	72	will send idle events: to all windows, or only to those which specify that they
	73	will process the events.
	74
	75	See \helpref{wxIdleEvent::SetMode}{wxidleeventsetmode}.
	76
	77	\membersection{wxIdleEvent::RequestMore}\label{wxidleeventrequestmore}
	78
	79	\func{void}{RequestMore}{\param{bool}{ needMore = true}}
	80
	81	Tells wxWindows that more processing is required. This function can be called by an OnIdle
	82	handler for a window or window event handler to indicate that wxApp::OnIdle should
	83	forward the OnIdle event once more to the application windows. If no window calls this function
	84	during OnIdle, then the application will remain in a passive event loop (not calling OnIdle) until a
	85	new event is posted to the application by the windowing system.
	86
	87	\wxheading{See also}
	88
	89	\helpref{wxIdleEvent::MoreRequested}{wxidleeventmorerequested}
	90
	91	\membersection{wxIdleEvent::MoreRequested}\label{wxidleeventmorerequested}
	92
	93	\constfunc{bool}{MoreRequested}{\void}
	94
	95	Returns true if the OnIdle function processing this event requested more processing time.
	96
	97	\wxheading{See also}
	98
	99	\helpref{wxIdleEvent::RequestMore}{wxidleeventrequestmore}
	100
	101	\membersection{wxIdleEvent::SetMode}\label{wxidleeventsetmode}
	102
	103	\func{static void}{SetMode}{\param{wxIdleMode }{mode}}
	104
	105	Static function for specifying how wxWindows will send idle events: to
	106	all windows, or only to those which specify that they
	107	will process the events.
	108
	109	{\it mode} can be one of the following values.
	110	The default is wxIDLE\_PROCESS\_ALL.
	111
	112	\begin{verbatim}
	113	enum wxIdleMode
	114	{
	115	// Send idle events to all windows
	116	wxIDLE_PROCESS_ALL,
	117
	118	// Send idle events to windows that have
	119	// the wxWS_EX_PROCESS_IDLE flag specified
	120	wxIDLE_PROCESS_SPECIFIED
	121	};
	122	\end{verbatim}
	123