滑块 - 无需单击拇指即可更改值

Question

我试图在不点击拇指的情况下移动滑块。我现在所拥有的是单击滑块并将拇指移动到该位置。我想要做的是当鼠标点击仍然向下时能够移动拇指（更改值）。（就像在 YouTube 或任何 audio/video 播放器上一样）这是我现在拥有的：

<Slider MouseLeave="Slider_MouseLeave" 
    MouseMove="Slider_MouseMove" 
    IsMoveToPointEnabled ="True" 
    PreviewMouseUp="Slider_PreviewMouseUp" 
    Thumb.DragStarted="Slider_DragStarted" 
    Thumb.DragCompleted="Slider_SaveChange" 
    Minimum="0" 
    Maximum="{Binding HomeViewSettings.SelectedTrack.TrackTime.TotalSeconds}" 
    Value="{Binding HomeViewSettings.CurrentTrackProgressInValue}"/>

Answer 1

我找到了这个解决方案：

mySlider.MouseMove += (sender, args) =>
        {
            if (args.LeftButton == MouseButtonState.Pressed && this.clickedInSlider)
            {
                var thumb = (mySlider.Template.FindName("PART_Track", mySlider) as System.Windows.Controls.Primitives.Track).Thumb;
                thumb.RaiseEvent(new MouseButtonEventArgs(args.MouseDevice, args.Timestamp, MouseButton.Left)
                {
                    RoutedEvent = UIElement.MouseLeftButtonDownEvent,
                    Source = args.Source
                });
            }
        };

        mySlider.AddHandler(UIElement.PreviewMouseLeftButtonDownEvent, new RoutedEventHandler((sender, args) =>
        {
            clickedInSlider = true;
        }), true);

        mySlider.AddHandler(UIElement.PreviewMouseLeftButtonUpEvent, new RoutedEventHandler((sender, args) =>
        {
            clickedInSlider = false;
        }), true);

滑块 - 无需单击拇指即可更改值

Slider - change value without clicking thumb

c#

wpf

mvvm

wpf-controls

mvvm-light