ClearPixMask

Declaration:	TMetaData.ClearPixMask (ixMask: integer): integer;
Resets the pixel mask specified by the index Mask (valid range 1..32). All bits of the mask are set to zero. The function returns the following error codes:  0 ... everything OK -1 ... the Mask parameter was invalid (valid range 1..32)

Hint:

In order to directly access the metadata of the currently loaded dataset you can use the pre-declared global variable MData.