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The contrast values available within the Source.
The application can use this capability to inquire, set or restrict the values for CONTRAST used in the Source.
Scale the values available internally into a homogeneous range between -1000 and 1000. Make sure that a ‘0’ value is available as the Current value when the Source starts up. If the Source’s ± range is asymmetric about the ‘0’ value, set range maxima to ±1000 and scale homogeneously from the ‘0’ value in each direction. This will yield a positive range whose step size differs from the negative range’s step size.
Type: TW_FIX
Value after MSG_OPENDS: (may be remembered from a previous session)
After MSG_RESET/MSG_RESETALL: 0
Allowed Values: -1000 to +1000
MSG_GET TW_ONEVALUE TW_RANGE TW_ENUMERATION
MSG_GETCURRENT TW_ONEVALUE
MSG_GETDEFAULT TW_ONEVALUE
MSG_SET TW_ONEVALUE
MSG_SETCONSTRAINT TW_ONEVALUE
TW_RANGE TW_ENUMERATION
MSG_RESET TW_ONEVALUE
MSG_QUERYSUPPORT TW_ONEVALUE
None
Version 1.0
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