/// <summary>
/// Initializes a new instance of the <see cref="PropertyMetadata{T}"/> class.
/// </summary>
/// <param name="unsetValue">未设置默认值</param>
/// <param name="propertyChangedHandler">属性更改处理器</param>
public PropertyMetadata(DependencyProperty.UnsetValueType unsetValue, EventHandler <PropertyChangedEventArgs <T> > propertyChangedHandler = null)
{
_defaultValueSet = false;
if (propertyChangedHandler != null)
{
PropertyChanged += propertyChangedHandler;
}
}
public FrameworkPropertyMetadata(DependencyProperty.UnsetValueType unsetValue, FrameworkPropertyMetadataOptions fmOptions = FrameworkPropertyMetadataOptions.None, UIPropertyMetadataOptions uiOptions = UIPropertyMetadataOptions.None, EventHandler <PropertyChangedEventArgs <T> > propertyChangedHandler = null)
: base(unsetValue, uiOptions, propertyChangedHandler)
{
_fmkOptions = fmOptions;
}
public UIPropertyMetadata(DependencyProperty.UnsetValueType unsetValue, UIPropertyMetadataOptions uiOptions = UIPropertyMetadataOptions.None, EventHandler <PropertyChangedEventArgs <T> > propertyChangedHandler = null)
: base(unsetValue, propertyChangedHandler)
{
_uiOptions = uiOptions;
}
