wxWidgets/docs/latex/wx/bmpdatob.tex
Robin Dunn b1462dfa34 wxPython stuff:
1. Added Clipboard and Drag-and-Drop classes
  2. Added wxFontEnumerator
  3. Many changes to wxMenu, wxMenubar
  4. Various other changes and additions
  5. Updates to the demo
  6. Documentation updates


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@4387 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
1999-11-06 08:30:23 +00:00

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2.1 KiB
TeX

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