X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/99646f7ee4afb3d7d929e1d396e56de8c1aed622..d6c6a32321219a3a2961e7f1ee1a8d2d54dc5cdf:/docs/latex/wx/timer.tex?ds=sidebyside diff --git a/docs/latex/wx/timer.tex b/docs/latex/wx/timer.tex index 97939eb2ba..88ecf4940b 100644 --- a/docs/latex/wx/timer.tex +++ b/docs/latex/wx/timer.tex @@ -11,18 +11,24 @@ There are two different ways to use this class: \helpref{Notify}{wxtimernotify} member to perform the required action. \item Or you may redirect the notifications to any \helpref{wxEvtHandler}{wxevthandler} derived object by using the non default -constructor or \helpref{SetOwner}{wxtimersetowner}. Then use {\tt EVT\_TIMER} +constructor or \helpref{SetOwner}{wxtimersetowner}. Then use the {\tt EVT\_TIMER} macro to connect it to the event handler which will receive \helpref{wxTimerEvent}{wxtimerevent} notifications. +\item Or you may use a derived class and the {\tt EVT\_TIMER} +macro to connect it to an event handler defined in the derived class. +If the default constructor is used, the timer object will be its +own owner object, since it is derived from wxEvtHandler. \end{enumerate} In any case, you must start the timer with \helpref{Start}{wxtimerstart} after constructing it before it actually starts sending notifications. It can be stopped later with \helpref{Stop}{wxtimerstop}. +{\bf NB:} note that timer can only be used from the main thread currently. + \wxheading{Derived from} -\helpref{wxObject}{wxobject} +\helpref{wxEvtHandler}{wxevthandler} \wxheading{Include files} @@ -53,7 +59,7 @@ Creates a timer and associates it with {\it owner}. Please see Destructor. Stops the timer if it is running. -\membersection{wxTimer::GetInterval}{wxtimergetinterval} +\membersection{wxTimer::GetInterval}\label{wxtimergetinterval} \constfunc{int}{GetInterval}{\void} @@ -63,14 +69,14 @@ Returns the current interval for the timer (in milliseconds). \constfunc{bool}{IsOneShot}{\void} -Returns TRUE if the timer is one shot, i.e. if it will stop after firing the +Returns {\tt true} if the timer is one shot, i.e.\ if it will stop after firing the first notification automatically. \membersection{wxTimer::IsRunning}\label{wxtimerisrunning} \constfunc{bool}{IsRunning}{\void} -Returns TRUE if the timer is running, FALSE if it is stopped. +Returns {\tt true} if the timer is running, {\tt false} if it is stopped. \membersection{wxTimer::Notify}\label{wxtimernotify} @@ -85,21 +91,28 @@ Perform whatever action which is to be taken periodically here. \func{void}{SetOwner}{\param{wxEvtHandler *}{owner}, \param{int }{id = -1}} -Associates the timer with the given {\it owner} object. When the timer is +Associates the timer with the given {\it owner}\/ object. When the timer is running, the owner will receive \helpref{timer events}{wxtimerevent} with -id equal to {\it id} specified here. +id equal to {\it id}\/ specified here. \membersection{wxTimer::Start}\label{wxtimerstart} -\func{bool}{Start}{\param{int}{ milliseconds = -1}, \param{bool}{ oneShot=FALSE}} +\func{bool}{Start}{\param{int}{milliseconds = -1}, \param{bool }{oneShot = {\tt false}}} + +(Re)starts the timer. If {\it milliseconds}\/ parameter is -1 (value by default), +the previous value is used. Returns {\tt false} if the timer could not be started, +{\tt true} otherwise (in MS Windows timers are a limited resource). -(Re)starts the timer. If {\it milliseconds} parameter is -1 (value by default), -the previous value is used. Returns FALSE if the timer could not be started, -TRUE otherwise (in MS Windows timers are a limited resource). +If {\it oneShot}\/ is {\tt false} (the default), the \helpref{Notify}{wxtimernotify} +function will be called repeatedly until the timer is stopped. If {\tt true}, +it will be called only once and the timer will stop automatically. To make your +code more readable you may also use the following symbolic constants +\twocolwidtha{5cm}% +\begin{twocollist}\itemsep=0pt +\twocolitem{wxTIMER\_CONTINUOUS}{Start a normal, continuously running, timer} +\twocolitem{wxTIMER\_ONE\_SHOT}{Start a one shot timer} +\end{twocollist} -If {\it oneShot} is FALSE (the default), the \helpref{Notify}{wxtimernotify} -function will be called repeatedly until the timer is stopped. If TRUE, -it will be called only once and the timer will stop automatically. If the timer was already running, it will be stopped by this method before restarting it.