Parameters
- blk
- Its coordinates and dimensions specify the area to return.
- c
- The index of the component from which to get the data.
Return Value
The requested DataBlk
The area to return is specified by the 'ulx', 'uly', 'w' and 'h' members of the 'blk' argument. These members are not modified by this method.
The data returned by this method can be the data in the internal buffer of this object, if any, and thus can not be modified by the caller. The 'offset' and 'scanw' of the returned data can be arbitrary. See the 'DataBlk' class.
The returned data has its 'progressive' attribute unset (i.e. false).