Rohit Gupta asks:
> I cant seem to find it right now....but how do I find out if a
> control has a
> particular published property and how do I access it ?
The other methods are somewhat lengthy, so here's the code we use for this
to determine if a property is available on an object:
function PropertyExists(Instance: TObject; const PropName: String): Boolean;
begin
Result := GetPropInfo(Instance.ClassInfo, PropName) <> nil;
end;
once you know the peoperty exists and are sure as to the type you can do fun
stuff like this:
PropInfo := GetPropInfo(Instance.ClassInfo, PropName);
if PropInfo.PropType^.Kind = tkString then
begin
// Read its value by doing
Value := GetStrProp(Instance, PropInfo);
// Set its value by doing
SetStrProp(Instance, PropInfo, 'New Value!');
end
Have a look int TypInfo for all the available routines that ley you muck
about with the type data, and allow reading and writing of properties. Its
all rather fun once actually 8-)
Cheers, Max.
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