wxBitmapDataObject Class Reference

#include </home/zeitlin/src/wx/github/interface/wx/dataobj.h>

Inheritance diagram for wxBitmapDataObject:

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Detailed Description

wxBitmapDataObject is a specialization of wxDataObject for bitmap data.

It can be used without change to paste data into the wxClipboard or a 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.

This class may be used as is, but GetBitmap() may be overridden to increase efficiency.

Library:  wxCore

Category:  Clipboard and Drag & Drop

参照:

Drag and Drop Overview, wxDataObject, wxDataObjectSimple, wxFileDataObject, wxTextDataObject, wxDataObject

Public Member Functions
	wxBitmapDataObject (const wxBitmap &bitmap=wxNullBitmap)
	Constructor, optionally passing a bitmap (otherwise use SetBitmap() later).
virtual wxBitmap	GetBitmap () const
	Returns the bitmap associated with the data object.
virtual void	SetBitmap (const wxBitmap &bitmap)
	Sets the bitmap associated with the data object.

List of all members.

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Constructor & Destructor Documentation

wxBitmapDataObject::wxBitmapDataObject

(

const wxBitmap &

bitmap = wxNullBitmap

)

Constructor, optionally passing a bitmap (otherwise use SetBitmap() later).

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Member Function Documentation

virtual wxBitmap wxBitmapDataObject::GetBitmap

(

)

const [virtual]

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 wxWidgets' internals. Use this method to get data in bitmap form from the wxClipboard.

virtual void wxBitmapDataObject::SetBitmap

(

const wxBitmap &

bitmap

)

[virtual]

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.