Retrieves the contents of an ink edit control.
IEGI_ALL to get the entire ink, or IEGI_SELECTION to get only the selected ink.
Not used; must be 0.
Returns the handle to the HPENDATA
structure if successful; otherwise, returns one of the following:
||wParam or lParam is invalid.
||A memory error occurred.
||The control has security protection disallowing the operation.
||Nothing is selected in the control; operation assumes a selection.
The returned HPENDATA
structure becomes the property of the application, which must eventually
destroy it. This handle is a copy of the handle used internally by the control. An
application cannot change the control by modifying the pen data referred to by
this handle, although the modified handle can subsequently be used in an
IE_SETINK call, which modifies the control's contents.
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