]>
Commit | Line | Data |
---|---|---|
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 | ||
10 | \wxheading{Include files} | |
11 | ||
12 | <wx/event.h> | |
13 | ||
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 | |
21 | \twocolitem{{\bf EVT\_ERASE\_BACKGROUND(func)}}{Process a wxEVT\_ERASE\_BACKGROUND event.} | |
22 | \end{twocollist}% | |
23 | ||
24 | \wxheading{Remarks} | |
25 | ||
26 | If the {\bf m\_DC} member is non-NULL, draw into this device context. | |
27 | ||
28 | \wxheading{See also} | |
29 | ||
30 | \helpref{wxWindow::OnEraseBackground}{wxwindowonerasebackground}, \helpref{Event handling overview}{eventhandlingoverview} | |
31 | ||
32 | \latexignore{\rtfignore{\wxheading{Members}}} | |
33 | ||
34 | \membersection{wxEraseEvent::wxEraseEvent} | |
35 | ||
36 | \func{}{wxEraseEvent}{\param{int }{id = 0}, \param{wxDC* }{dc = NULL}} | |
37 | ||
38 | Constructor. | |
39 | ||
40 | \membersection{wxEraseEvent::m\_dc} | |
41 | ||
42 | \member{wxDC*}{m\_dc} | |
43 | ||
44 | The device context associated with the erase event (may be NULL). | |
45 | ||
46 | \membersection{wxEraseEvent::GetDC}\label{wxeraseeventgetdc} | |
47 | ||
48 | \constfunc{wxDC*}{GetDC}{\void} | |
49 | ||
50 | Returns the device context to draw into. If this is non-NULL, you should draw | |
51 | into it to perform the erase operation. | |
52 |