Windows 3.1 Device Drivers (ddag31qh.hlp) (Table of Contents; Topic list)
Display-Driver Escapes
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A display driver provides the Control function to give applications direct
access the display driver. Most display drivers only provide support for the
following escapes:
 
♦  GETCOLORTABLE
 
♦  MOUSETRAILS
 
♦  QUERYESCSUPPORT
 
Applications call the QUERYESCSUPPORT escape to determine whether the
display driver supports a given escape.
 
 
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