Int 15 Fn 12  - Desqview V2.50+ - Send Message 12h With Error Recovery     [Q]

   AH = 12h
   BH = 92h

Note:  this function is identical to AH=12h/BH=12h, except that DESQview will
     not pop up a "Programming Error" window, instead returning an error
     code in AL (see AH=12h/BH=80h)

See Also: AH=12h/BH=12h,AH=12h/BX=1200h