Kramer Electronics SP-14 - Manual (Page 22)

end if
if succ then
succ = get(paramID => avPar_contrast,
attribute => avParamAttr_e2value,
value => val);
end if
if succ then
if (qfuncs and avQueryFunc_get_availValue) > 0 then
valAvail = val;
succ = get(paramID => avPar_contrast,
attribute => avParamAttr_availValue,
value => valAvail);
else
valAvail = TRUE;
end if
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
set UI control range to min, max
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
3.3.5.3.5 The User Adjusts the Value
Having allowed the user to make an adjustment to the value on the user interface, the unit
needs to be updated. Here the set is only performed with the avParamAttr_value attribute.
This is for performance reasons. It must also be set with using the avParamAttr_e2value
attribute when the user as finished (as will be shown in the next section).
boolean succ;
int qfuncs; -- obtained on connection
int min; -- obtained on start of editing
int max; -- obtained on start of editing
int newval; -- new adjusted value
int oldval; -- unadjusted value currently on unit
int valAvail;
if (newval >= min) and (newval <= max) then
if (qfuncs and avQueryFunc_get_availValue) > 0 then
valAvail = newval;
succ = get(paramID => avPar_contrast,
attribute => avParamAttr_availValue,
value => valAvail);
else
valAvail = TRUE;
end if