RAD Studio VCL Reference
TypInfo.SetStrProp Function

Sets the value of a component property that is a string type.

procedure SetStrProp(Instance: TObject; const PropName: string; const Value: string); overload;
procedure SetStrProp(Instance: TObject; PropInfo: PPropInfo; const Value: string); overload;
SetStrProp(TObject * Instance, const AnsiString PropName, const AnsiString Value);
SetStrProp(TObject * Instance, PPropInfo PropInfo, const AnsiString Value);

SetStrProp utilises Delphi's RTTI (Run Time Type Information) to set the value of a component's property where that property is a String, LongString or WideString type.  

In one form of this function, the object Instance's property is defined by a PropInfo record. GetPropInfo and GetPropList can be used to obtain such a record.  

In the other form of this function, the name of the property, PropName, is explicitly given.  

In both forms of the function, the new property value is defined by Value.  

The intrinsic value of this function is to allow setting of component properties without the need to hard code the property name. This allows mass visual component processing at run time.  

Use SetPropValue to set a property value where the type is unknown. This would normally be used when using GetPropValue from another property.

Note: If the specified property does not exist, or is not a published property, an EPropertyError exception is thrown.


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