Kramer Electronics SP-14 - Manual (Page 23)

if valAvail then
succ = set(paramID => avPar_contrast,
attribute => avParamAttr_value,
value => newval);
if succ then
oldval = newval; -- update old value
end if
else
-- value not available: do not set
indicate on UI that value is not available
end if
else
newval = oldval; -- revert change
end if
if succ then
if (qfuncs and avQueryFunc_gets) > 0 then
succ = gets(paramID => avPar_contrast,
attribute => avParamAttr_value,
value => val,
returned string => st);
else
st = convertToString(val);
end if
display st as value in UI control
if not valAvail then
indicate on UI this particular value is not available
end if
allow user to use control
else
Process Error
end if
3.3.5.3.6 The User Completes Adjusting the Value
When the user has finished adjusting the parameter it is necessary to set the value using both
of the value attributes.
boolean succ;
int oldval; -- unadjusted value currently on unit
int valAvail;
succ = set(paramID => avPar_contrast,
attribute => avParamAttr_value,
value => oldval);
if succ then
succ = set(paramID => avPar_contrast,
attribute => avParamAttr_e2value,
value => oldval);
end if
3.3.5.4 Parameter type: String
String parameters implement both the get string and set string functions. The minimum and
maximum functions when implemented provide the minimum and maximum length of the
string. The protocol has a restriction of six characters maximum for the set string function; this
is a limitation of this protocol and the underlying communication implementation.