# wx.CustomDataObject¶

wx.CustomDataObject is a specialization of wx.DataObjectSimple for some application-specific data in arbitrary (either custom or one of the standard ones).

The only restriction is that it is supposed that this data can be copied bitwise (i.e. with memcpy() ), so it would be a bad idea to make it contain a C++ object (though C struct is fine).

By default, wx.CustomDataObject stores the data inside in a buffer. To put the data into the buffer you may use either SetData or TakeData depending on whether you want the object to make a copy of data or not.

This class may be used as is, but if you don’t want store the data inside the object but provide it on demand instead, you should override GetSize, GetData and SetData (or may be only the first two or only the last one if you only allow reading/writing the data).

wx.DataObject

## Class Hierarchy¶

Inheritance diagram for class CustomDataObject:

## Methods Summary¶

 __init__ The constructor accepts a format argument which specifies the (single) format supported by this object. GetAllFormats Returns a list of wx.DataFormat objects which this data object GetData Returns a reference to the data buffer. GetSize Returns the data size in bytes. SetData Copies data from the provided buffer to this data object’s buffer

## Class API¶

class wx.CustomDataObject(DataObjectSimple)

Possible constructors:

CustomDataObject(format=FormatInvalid)

CustomDataObject(formatName)


CustomDataObject is a specialization of DataObjectSimple for some application-specific data in arbitrary (either custom or one of the standard ones).

### Methods¶

__init__(self, *args, **kw)

__init__ (self, format=FormatInvalid)

The constructor accepts a format argument which specifies the (single) format supported by this object.

If it isn’t set here, wx.DataObjectSimple.SetFormat should be used.

Parameters

format (wx.DataFormat) –

__init__ (self, formatName)

GetAllFormats(self, dir=DataObject.Get)

Returns a list of wx.DataFormat objects which this data object supports transferring in the given direction.

GetData(self)

Returns a reference to the data buffer.

Return type

PyObject

GetSize(self)

Returns the data size in bytes.

Return type

int

SetData(self, *args, **kw)

SetData (self, buf)

Copies data from the provided buffer to this data object’s buffer

Return type

bool

SetData (self, format, buf)

Return type

bool

### Properties¶

AllFormats

Data

Size