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Version: 3.0.2 |
#include <wx/dataobj.h>
Inheritance diagram for wxBitmapDataObject:
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.
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. | |
| Public Member Functions inherited from wxDataObjectSimple | |
| wxDataObjectSimple (const wxDataFormat &format=wxFormatInvalid) | |
| Constructor accepts the supported format (none by default) which may also be set later with SetFormat(). | |
| virtual bool | GetDataHere (void *buf) const |
| Copy the data to the buffer, return true on success. | |
| virtual size_t | GetDataSize () const |
| Gets the size of our data. | |
| const wxDataFormat & | GetFormat () const |
| Returns the (one and only one) format supported by this object. | |
| virtual bool | SetData (size_t len, const void *buf) |
| Copy the data from the buffer, return true on success. | |
| void | SetFormat (const wxDataFormat &format) |
| Sets the supported format. | |
| Public Member Functions inherited from wxDataObject | |
| wxDataObject () | |
| Constructor. | |
| virtual | ~wxDataObject () |
| Destructor. | |
| virtual void | GetAllFormats (wxDataFormat *formats, Direction dir=Get) const =0 |
| Copies all formats supported in the given direction dir to the array pointed to by formats. | |
| virtual bool | GetDataHere (const wxDataFormat &format, void *buf) const =0 |
| The method will write the data of the format format to the buffer buf. | |
| virtual size_t | GetDataSize (const wxDataFormat &format) const =0 |
| Returns the data size of the given format format. | |
| virtual size_t | GetFormatCount (Direction dir=Get) const =0 |
| Returns the number of available formats for rendering or setting the data. | |
| virtual wxDataFormat | GetPreferredFormat (Direction dir=Get) const =0 |
Returns the preferred format for either rendering the data (if dir is Get, its default value) or for setting it. | |
| virtual bool | SetData (const wxDataFormat &format, size_t len, const void *buf) |
| Set the data in the format format of the length len provided in the buffer buf. | |
| bool | IsSupported (const wxDataFormat &format, Direction dir=Get) const |
| Returns true if this format is supported. | |
Additional Inherited Members | |
| Public Types inherited from wxDataObject | |
| enum | Direction { Get = 0x01, Set = 0x02, Both = 0x03 } |
Constructor & Destructor Documentation
| wxBitmapDataObject::wxBitmapDataObject | ( | const wxBitmap & | bitmap = wxNullBitmap | ) |
Constructor, optionally passing a bitmap (otherwise use SetBitmap() later).
Member Function Documentation
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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.
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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.