## CustomProperty.AddParameterFromDef

### Introduced

v5.0

### Description

Creates a Parameter from a ParamDef object. ParamDef objects contain the definition of a parameter from which you can create new parameters on the fly for one or more property sets or operators. For example, you may want to use a double with the same min/max range and use it on multiple property sets or you may simply want a quick way to add parameters to a runtime scripted operator via scripting. You can create New ParamDef objects from the XSIFactory object.

### C# Syntax

    Parameter CustomProperty.AddParameterFromDef( ParamDef in_pParamDef );

### Scripting Syntax

    oReturn = CustomProperty.AddParameterFromDef( ParamDef );

### Return Value

The newly created Parameter object.

### Parameters

Parameter | Type | Description
--- | --- | ---
ParamDef | ParamDef | New parameter definition

### Examples

#### JScript Example

    /*
            This example illustrates how to create parameters from a parameter definition.
    */
    var o = ActiveSceneRoot.AddCustomProperty("MyProperty");
    var param1 = o.AddParameterFromDef(XSIFactory.CreateParamDef2("text", siString, "text string"));
    var param2 = o.AddParameterFromDef(XSIFactory.CreateParamDef2("bool", siBool, true));
    var param3 = o.AddParameterFromDef(XSIFactory.CreateParamDef2("int", siInt4, 10, 0, 100));
    var param4 = o.AddParameterFromDef(XSIFactory.CreateParamDef2("dbl", siDouble, 0.5, 0.0, 1.0));
    var param5 = o.AddParameterFromDef(XSIFactory.CreateFCurveParamDef("fc"));
    var param6 = o.AddParameterFromDef(XSIFactory.CreateGridParamDef("grid"));
    // list parameters
    var eParams = new Enumerator(o.parameters);
    for ( ; !eParams.atEnd(); eParams.moveNext() )
    {
            var param = eParams.item();
            var strVal = ""+param.value;
            logmessage( param.name + ", " + vt2string(param.valuetype) + ", " + (strVal=="" ? "none" : strVal) );
    }
    //INFO : Name, wide string, MyProperty13
    //INFO : text, string, text string
    //INFO : bool, boolean, true
    //INFO : int, long, 10
    //INFO : dbl, double, 0.5
    //INFO : fc, object, FCurve
    //INFO : grid, object, none
    function vt2string( vt )
    {
            switch ( vt )
            {
                    case siInt4 : return "long";
                    case siDouble : return "double";
                    case siString  : return "string";
                    case siBool : return "boolean";
                    case siUnknown : return "object";
                    case siWStr : return "wide string";
                    default : return vt;
            }
    }

### See Also

XSIFactory.CreateParamDef XSIFactory.CreateParamDef2 XSIFactory.CreateFCurveParamDef XSIFactory.CreateGridParamDef