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Correct example of using wxDataObjectComposite in the docs

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Don't call base class pure virtual method, but do call GetData() before
using the data object. Also fix a typo in a variable name.
This commit is contained in:
Vadim Zeitlin
2017-11-24 23:10:47 +01:00
parent 778340a286
commit 19c4172671
1 changed files with 26 additions and 27 deletions
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53
interface/wx/dataobj.h
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@@ -427,40 +427,39 @@ public:
wxDragResult MyDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult MyDropTarget::OnData(wxCoord x, wxCoord y,
wxDragResult defaultDragResult) wxDragResult defaultDragResult)
{ {
wxDragResult dragResult = wxDropTarget::OnData(x, y, defaultDragResult); if ( !GetData() )
if ( dragResult == defaultDragResult ) return wxDragNone;
wxDataObjectComposite *
dataobjComp = static_cast<wxDataObjectComposite *>(GetDataObject());
wxDataFormat format = dataobjComp->GetReceivedFormat();
wxDataObject *dataobj = dataobjComp->GetObject(format);
switch ( format.GetType() )
{ {
wxDataObjectComposite * case wxDF_BITMAP:
dataobjComp = static_cast<wxDataObjectComposite *>(GetDataObject()); {
wxBitmapDataObject *
dataobjBitmap = static_cast<wxBitmapDataObject *>(dataobj);
wxDataFormat format = dataObjects->GetReceivedFormat(); ... use dataobj->GetBitmap() ...
wxDataObject *dataobj = dataobjComp->GetObject(format); }
switch ( format.GetType() ) break;
{
case wxDF_BITMAP:
{
wxBitmapDataObject *
dataobjBitmap = static_cast<wxBitmapDataObject *>(dataobj);
... use dataobj->GetBitmap() ... case wxDF_FILENAME:
} {
break; wxFileDataObject *
dataobjFile = static_cast<wxFileDataObject *>(dataobj);
case wxDF_FILENAME: ... use dataobj->GetFilenames() ...
{ }
wxFileDataObject * break;
dataobjFile = static_cast<wxFileDataObject *>(dataobj);
... use dataobj->GetFilenames() ... default:
} wxFAIL_MSG( "unexpected data object format" );
break;
default:
wxFAIL_MSG( "unexpected data object format" );
}
} }
return dragResult; return defaultDragResult;
} }
@endcode @endcode