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1 | \section{\class{wxEraseEvent}}\label{wxeraseevent} |
2 | ||
3 | An erase event is sent when a window's background needs to be repainted. | |
4 | ||
5 | \wxheading{Derived from} | |
6 | ||
7 | \helpref{wxEvent}{wxevent}\\ | |
8 | \helpref{wxObject}{wxobject} | |
9 | ||
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10 | \wxheading{Include files} |
11 | ||
12 | <wx/event.h> | |
13 | ||
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14 | \wxheading{Event table macros} |
15 | ||
16 | To process an erase event, use this event handler macro to direct input to a member | |
17 | function that takes a wxEraseEvent argument. | |
18 | ||
19 | \twocolwidtha{7cm} | |
20 | \begin{twocollist}\itemsep=0pt | |
884360bc | 21 | \twocolitem{{\bf EVT\_ERASE\_BACKGROUND(func)}}{Process a wxEVT\_ERASE\_BACKGROUND event.} |
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22 | \end{twocollist}% |
23 | ||
24 | \wxheading{Remarks} | |
25 | ||
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26 | Use the {\bf m\_DC} device context to draw into, don't create wxPaintDC in |
27 | the event handler. | |
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28 | |
29 | \wxheading{See also} | |
30 | ||
31 | \helpref{wxWindow::OnEraseBackground}{wxwindowonerasebackground}, \helpref{Event handling overview}{eventhandlingoverview} | |
32 | ||
33 | \latexignore{\rtfignore{\wxheading{Members}}} | |
34 | ||
35 | \membersection{wxEraseEvent::wxEraseEvent} | |
36 | ||
37 | \func{}{wxEraseEvent}{\param{int }{id = 0}, \param{wxDC* }{dc = NULL}} | |
38 | ||
39 | Constructor. | |
40 | ||
41 | \membersection{wxEraseEvent::m\_dc} | |
42 | ||
43 | \member{wxDC*}{m\_dc} | |
44 | ||
dce5c1db | 45 | The device context associated with the erase event. |
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46 | |
47 | \membersection{wxEraseEvent::GetDC}\label{wxeraseeventgetdc} | |
48 | ||
49 | \constfunc{wxDC*}{GetDC}{\void} | |
50 | ||
dce5c1db | 51 | Returns the device context to draw into. |
a660d684 | 52 |