Spacing tweak

[wxWidgets.git] / docs / latex / wx / timer.tex

diff --git a/docs/latex/wx/timer.tex b/docs/latex/wx/timer.tex
index 00eba9a6ca90f71acc711c365f26dd587d0e2f29..c764bb6b3862b752336fb672bd21674cf0e561ff 100644 (file)
--- a/docs/latex/wx/timer.tex
+++ b/docs/latex/wx/timer.tex
@@ -4,25 +4,31 @@ The wxTimer class allows you to execute code at specified intervals. Its
 precision is platform-dependent, but in general will not be better than 1ms nor
 worse than 1s.
 
-There are two different ways to use this class:
+There are three different ways to use this class:
 
 \begin{enumerate}
 \item You may derive a new class from wxTimer and override the 
 \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 Note:} A timer can only be used from the main thread.
+
 \wxheading{Derived from}
 
-\helpref{wxObject}{wxobject}
+\helpref{wxEvtHandler}{wxevthandler}
 
 \wxheading{Include files}
 
@@ -34,7 +40,7 @@ be stopped later with \helpref{Stop}{wxtimerstop}.
 
 \latexignore{\rtfignore{\wxheading{Members}}}
 
-\membersection{wxTimer::wxTimer}\label{wxtimerctordef}
+\membersection{wxTimer::wxTimer}\label{wxtimerwxtimer}
 
 \func{}{wxTimer}{\void}
 
@@ -42,20 +48,18 @@ Default constructor. If you use it to construct the object and don't call
 \helpref{SetOwner}{wxtimersetowner} later, you must override 
 \helpref{Notify}{wxtimernotify} method to process the notifications.
 
-\membersection{wxTimer::wxTimer}\label{wxtimerwxtimer}
-
 \func{}{wxTimer}{\param{wxEvtHandler *}{owner}, \param{int }{id = -1}}
 
 Creates a timer and associates it with {\it owner}. Please see 
 \helpref{SetOwner}{wxtimersetowner} for the description of parameters.
 
-\membersection{wxTimer::\destruct{wxTimer}}
+\membersection{wxTimer::\destruct{wxTimer}}\label{wxtimerdtor}
 
 \func{}{\destruct{wxTimer}}{\void}
 
 Destructor. Stops the timer if it is running.
 
-\membersection{wxTimer::GetInterval}{wxtimergetinterval}
+\membersection{wxTimer::GetInterval}\label{wxtimergetinterval}
 
 \constfunc{int}{GetInterval}{\void}
 
@@ -65,14 +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}
 
@@ -87,21 +91,31 @@ 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:
 
-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.
+\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 the timer was already running, it will be stopped by this method before
+restarting it.
 
 \membersection{wxTimer::Stop}\label{wxtimerstop}
 
@@ -143,6 +157,10 @@ void MyFrame::OnTimer(wxTimerEvent& event)
 
 \end{verbatim}
 
+\wxheading{Derived from}
+
+\helpref{wxEvent}{wxevent}
+
 \wxheading{Include files}
 
 <wx/timer.h>