Sets the size of the empty white frame around the barcode. It is specified in logical units. One unit is the size of a single datamatrix module. (Specified by SetDMModuleSize)
SetDMQuietZone (pDevMode As Long, dwSize As Long) As Boolean
Input value - pDevMode: handle to the BlackIceDEVMODE structure
Input value - dwSize: the size of the frame in logical units
Return value - TRUE on success, FALSE otherwise.
NOTE: For 32-bit applications, use pDevMode as Integer, instead of Long.