>OK, based on your delphi code i came up with the following, which works just fine so far. gonna have to see over time if there are any printers which would be identified wrongly. The following code is build in my Printer class, so you have to change anything accessing/setting properties/etc in there<snip>

Wouldn't it be simpler to write this piece of code as below?

* *** number of colors is smaler or equal then 16
* *** and the printer prints true type fonts as graphics
* *** its a dot-metrix printer
THIS.PrinterIsDotMatrix = ((m.nNumberColor <= 16) AND (m.PrintTTFAsGraphic = DCTT_BITMAP))

*IF ;
*		m.nNumberColor <= 16 .AND. ;
*		m.PrintTTFAsGraphic = DCTT_BITMAP
*	THIS.PrinterIsDotMatrix = .T.
*ELSE
*	THIS.PrinterIsDotMatrix = .F.
*ENDIF