'宣言 Public Shared ReadOnly SetRelativeStartTimeCommand As System.Windows.Input.RoutedCommand
public static readonly System.Windows.Input.RoutedCommand SetRelativeStartTimeCommand
'宣言 Public Shared ReadOnly SetRelativeStartTimeCommand As System.Windows.Input.RoutedCommand
public static readonly System.Windows.Input.RoutedCommand SetRelativeStartTimeCommand
Command parameter: a floating point number in a range between 0 and 1, or its string representation, that is passed as a parameter to the SetRelativeStartTime method.
Use this command to implement custom scrolling behavior.