terpreting system draw mask values, first remember that if the SDM_INVERSE flag is set, then the inverse of the mask will be used instead of the mask itself. The remaining bits should be a <CODE>
SystemDrawMask</CODE>
 value, a value between zero and SDM_0. Draw mask values between zero and 24 are various graphic draw mask patterns. Values between 25 and 89 are percentage fill masks, 89 corresponding to the empty fill and 25 to a 100% fill. Several SDM_... constants have been set up with the more commonly u