[Overview][Constants][Types][Classes][Procedures and functions][Index] |
Return the value of a set property.
Source position: typinfo.pp line 799
function GetSetProp( |
Instance: TObject; |
const PropName: string |
):string; |
Instance: TObject; |
const PropName: string; |
Brackets: Boolean |
):string; |
Instance: TObject; |
const PropInfo: PPropInfo; |
Brackets: Boolean |
):string; |
GetSetProp returns the contents of a set property as a string. The property to be returned can be specified by it's name in PropName or by its property information in PropInfo.
The returned set is a string representation of the elements in the set as returned by SetToString. The Brackets option can be used to enclose the string representation in square brackets.
No checking is done whether Instance is non-nil, or whether PropInfo describes a valid ordinal property of Instance Specifying an invalid property name in PropName will result in an EPropertyError exception.
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Set value of set-typed property. |
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Return the value of a string property. |
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Return value of floating point property |
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return value of an Int64 property |
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Return value of a method property |
program example7; { This program demonstrates the GetSetProp function } {$mode objfpc} uses rttiobj,typinfo; Var O : TMyTestObject; PI : PPropInfo; Function SetAsString (ASet : TMyEnums) : String; Var i : TmyEnum; begin result:=''; For i:=mefirst to methird do If i in ASet then begin If (Result<>'') then Result:=Result+','; Result:=Result+MyEnumNames[i]; end; end; Var S : TMyEnums; begin O:=TMyTestObject.Create; O.SetField:=[mefirst,meSecond,meThird]; Writeln('Set property : '); Writeln('Value : ',SetAsString(O.SetField)); Writeln('Ord(Value) : ',Byte(O.SetField)); Writeln('Get (name) : ',GetSetProp(O,'SetField')); PI:=GetPropInfo(O,'SetField'); Writeln('Get (propinfo) : ',GetSetProp(O,PI,false)); S:=[meFirst,meThird]; SetOrdProp(O,'SetField',Byte(S)); Write('Set (name,[mefirst,methird]) : '); Writeln(SetAsString(O.SetField)); S:=[meSecond]; SetOrdProp(O,PI,Byte(S)); Write('Set (propinfo,[meSecond]) : '); Writeln(SetAsString(O.SetField)); O.Free; end.