projects / wxWidgets.git / blame
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1 | \section{\class{wxPaintDC}}\label{wxpaintdc} |
| 2 | ||
| 3 | A wxPaintDC must be constructed if an application wishes to paint on the | |
| 4 | client area of a window from within an {\bf OnPaint} event. | |
| 5 | This should normally be constructed as a temporary stack object; don't store | |
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6 | a wxPaintDC object. If you have an OnPaint handler, you {\it must} create a wxPaintDC |
| 7 | object within it even if you don't actually use it. | |
| a660d684 | 8 | |
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9 | Using wxPaintDC within OnPaint is important because it automatically |
| 10 | sets the clipping area to the damaged area of the window. Attempts to draw | |
| 11 | outside this area do not appear. | |
| 12 | ||
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13 | To draw on a window from outside {\bf OnPaint}, construct a \helpref{wxClientDC}{wxclientdc} object. |
| 14 | ||
| 15 | To draw on the whole window including decorations, construct a \helpref{wxWindowDC}{wxwindowdc} object | |
| 16 | (Windows only). | |
| 17 | ||
| 18 | \wxheading{Derived from} | |
| 19 | ||
| f53561f1 | 20 | \helpref{wxWindowDC}{wxwindowdc}\\ |
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21 | \helpref{wxDC}{wxdc} |
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23 | \wxheading{Include files} |
| 24 | ||
| 25 | <wx/dcclient.h> | |
| 26 | ||
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27 | \wxheading{See also} |
| 28 | ||
| 29 | \helpref{wxDC}{wxdc}, \helpref{wxMemoryDC}{wxmemorydc}, \helpref{wxPaintDC}{wxpaintdc},\rtfsp | |
| 30 | \helpref{wxWindowDC}{wxwindowdc}, \helpref{wxScreenDC}{wxscreendc} | |
| 31 | ||
| 32 | \latexignore{\rtfignore{\wxheading{Members}}} | |
| 33 | ||
| 34 | \membersection{wxPaintDC::wxPaintDC} | |
| 35 | ||
| 36 | \func{}{wxPaintDC}{\param{wxWindow*}{ window}} | |
| 37 | ||
| 38 | Constructor. Pass a pointer to the window on which you wish to paint. | |
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