fa482912e4
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6718 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
61 lines
2.2 KiB
TeX
61 lines
2.2 KiB
TeX
\section{\class{wxBitmapDataObject}}\label{wxbitmapdataobject}
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wxBitmapDataObject is a specialization of wxDataObject for bitmap data. It can
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be used without change to paste data into the
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\helpref{wxClipboard}{wxclipboard} or a \helpref{wxDropSource}{wxdropsource}. A
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user may wish to derive a new class from this class for providing a bitmap
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on-demand in order to minimize memory consumption when offering data in several
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formats, such as a bitmap and GIF.
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\pythonnote{If you wish to create a derived wxBitmapDataObject class in
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wxPython you should derive the class from wxPyBitmapDataObject
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in order to get Python-aware capabilities for the various virtual
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methods.}
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\wxheading{Virtual functions to override}
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This class may be used as is, but
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\helpref{GetBitmap}{wxbitmapdataobjectgetbitmap} may be overridden to increase
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efficiency.
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\wxheading{Derived from}
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\helpref{wxDataObjectSimple}{wxdataobjectsimple}\\
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\helpref{wxDataObject}{wxdataobject}
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\wxheading{Include files}
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<wx/dataobj.h>
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\wxheading{See also}
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\helpref{Clipboard and drag and drop overview}{wxdndoverview},
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\helpref{wxDataObject}{wxdataobject},
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\helpref{wxDataObjectSimple}{wxdataobjectsimple},
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\helpref{wxFileDataObject}{wxfiledataobject},
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\helpref{wxTextDataObject}{wxtextdataobject},
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\helpref{wxDataObject}{wxdataobject}
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\func{}{wxBitmapDataObject}{\param{const wxBitmap\& }{bitmap = wxNullBitmap}}
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Constructor, optionally passing a bitmap (otherwise use
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\helpref{SetBitmap}{wxbitmapdataobjectsetbitmap} later).
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\membersection{wxBitmapDataObject::GetBitmap}\label{wxbitmapdataobjectgetbitmap}
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\constfunc{virtual wxBitmap}{GetBitmap}{\void}
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Returns the bitmap associated with the data object. You may wish to override
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this method when offering data on-demand, but this is not required by
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wxWindows' internals. Use this method to get data in bitmap form from
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the \helpref{wxClipboard}{wxclipboard}.
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\membersection{wxBitmapDataObject::SetBitmap}\label{wxbitmapdataobjectsetbitmap}
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\func{virtual void}{SetBitmap}{\param{const wxBitmap\& }{bitmap}}
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Sets the bitmap associated with the data object. This method is called when the
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data object receives data. Usually there will be no reason to override this
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function.
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