## FCurve.GetKeyAtIndex

### Introduced

v3.0

### Description

Returns the key at the specified index.
Note: If the index is out of range then the method raises an 'Invalid argument' (E_INVALIDARG) error.

### C# Syntax

    FCurveKey FCurve.GetKeyAtIndex( Int32 in_Index );

### Scripting Syntax

    oReturn = FCurve.GetKeyAtIndex( Index );

### Return Value

FCurveKey

### Parameters

Parameter | Type | Description
--- | --- | ---
Index | Long | Index of the key. Must be a value between 0 and (number of keys - 1).

### Examples

#### JScript Example

    /*

    	This JScript example illustrates how to add keys to an fcurve and

    	then how to access the key using its index.

    */

    // Create a null

    Application.NewScene( null, false );

    var nullobj = ActiveSceneRoot.AddNull();

    // Create an fcurve on the posx parameter from the null

    var fc = nullobj.posx.AddFCurve();

    // Define the number of keys

    var nbkeys = 100;

    // Start editing the fcurve

    fc.BeginEdit();

    // Add keys to the fcurve

    var key, val, index, frame;

    for ( frame=1; frame<=nbkeys; frame++ )

    {

    	val = ( Math.sin( 1/frame ) * 10 )

    	index = fc.AddKey( frame, val );

    	// Get key using index

    	key = fc.GetKeyAtIndex( index );

    	// Lock key

    	key.Locked = true;

    }

    // End editing the fcurve and put the undo event onto

    // the undo/redo stack

    fc.EndEdit();

### See Also

FCurveKey.Index FCurve.Keys FCurve.GetKey FCurve.GetKeyIndex