wxWidgets/docs/latex/wx/eraseevt.tex
1999-02-15 20:41:29 +00:00

53 lines
1.3 KiB
TeX

\section{\class{wxEraseEvent}}\label{wxeraseevent}
An erase event is sent when a window's background needs to be repainted.
\wxheading{Derived from}
\helpref{wxEvent}{wxevent}\\
\helpref{wxObject}{wxobject}
\wxheading{Include files}
<wx/event.h>
\wxheading{Event table macros}
To process an erase event, use this event handler macro to direct input to a member
function that takes a wxEraseEvent argument.
\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
\twocolitem{{\bf EVT\_ERASE\_BACKGROUND(func)}}{Process a wxEVT\_ERASE\_BACKGROUND event.}
\end{twocollist}%
\wxheading{Remarks}
If the {\bf m\_DC} member is non-NULL, draw into this device context.
\wxheading{See also}
\helpref{wxWindow::OnEraseBackground}{wxwindowonerasebackground}, \helpref{Event handling overview}{eventhandlingoverview}
\latexignore{\rtfignore{\wxheading{Members}}}
\membersection{wxEraseEvent::wxEraseEvent}
\func{}{wxEraseEvent}{\param{int }{id = 0}, \param{wxDC* }{dc = NULL}}
Constructor.
\membersection{wxEraseEvent::m\_dc}
\member{wxDC*}{m\_dc}
The device context associated with the erase event (may be NULL).
\membersection{wxEraseEvent::GetDC}\label{wxeraseeventgetdc}
\constfunc{wxDC*}{GetDC}{\void}
Returns the device context to draw into. If this is non-NULL, you should draw
into it to perform the erase operation.