如何在 AvalonDock 2(LayoutDocumentPane) 中禁用左、右、上、下放置目标

Question

我正在尝试禁用除 avalon dock 中的中心目标之外的投放目标。在 codeplex 中找不到任何文档来执行此操作。我在 Whosebug here 中发现了一个类似的问题，但没有正确的答案，所以再次询问。

Answer 1

作为一个选项，您可以覆盖 OverlayWindow 控件样式并从中删除或更改拖放区域：

<Style x:Key="{x:Type avalonDockControls:OverlayWindow}"
     TargetType="{x:Type avalonDockControls:OverlayWindow}">
...
        <Grid x:Name="PART_AnchorablePaneDropTargets">
          <Grid Width="88"
                Height="88"
                VerticalAlignment="Center"
                HorizontalAlignment="Center">
            <Grid.ColumnDefinitions>
              <ColumnDefinition />
              <ColumnDefinition />
              <ColumnDefinition />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
              <RowDefinition />
              <RowDefinition />
              <RowDefinition />
            </Grid.RowDefinitions>
            <Image Grid.ColumnSpan="3"
                   Grid.RowSpan="3"
                   Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/DockPaneEmpty.PNG"
                   Stretch="Uniform">
            </Image>
            <Border Name="PART_AnchorablePaneDropTargetTop"
                    Grid.Column="1"
                    Grid.Row="0">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockPaneTop.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_AnchorablePaneDropTargetRight"
                    Grid.Column="2"
                    Grid.Row="1">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockPaneRight.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_AnchorablePaneDropTargetBottom"
                    Grid.Column="1"
                    Grid.Row="2">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockPaneBottom.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_AnchorablePaneDropTargetLeft"
                    Grid.Column="0"
                    Grid.Row="1">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockPaneLeft.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_AnchorablePaneDropTargetInto"
                    Grid.Column="1"
                    Grid.Row="1">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockPaneInside.png"
                     Stretch="None">
              </Image>
            </Border>
          </Grid>
        </Grid>
        <Grid x:Name="PART_DocumentPaneDropTargets">
          <Grid Width="88"
                Height="88"
                VerticalAlignment="Center"
                HorizontalAlignment="Center">
            <Grid.ColumnDefinitions>
              <ColumnDefinition />
              <ColumnDefinition />
              <ColumnDefinition />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
              <RowDefinition />
              <RowDefinition />
              <RowDefinition />
            </Grid.RowDefinitions>
            <Image Grid.ColumnSpan="3"
                   Grid.RowSpan="3"
                   Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/DockPaneEmpty.PNG"
                   Stretch="Uniform">
            </Image>
            <Border Name="PART_DocumentPaneDropTargetTop"
                    Grid.Column="1"
                    Grid.Row="0">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockDocPaneTop.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_DocumentPaneDropTargetRight"
                    Grid.Column="2"
                    Grid.Row="1">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockDocPaneRight.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_DocumentPaneDropTargetBottom"
                    Grid.Column="1"
                    Grid.Row="2">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockDocPaneBottom.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_DocumentPaneDropTargetLeft"
                    Grid.Column="0"
                    Grid.Row="1">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockDocPaneLeft.png"
                     Stretch="None">
              </Image>
            </Border>
            <Border Name="PART_DocumentPaneDropTargetInto"
                    Grid.Column="1"
                    Grid.Row="1">
              <Image Source="/Xceed.Wpf.AvalonDock;component/Themes/Generic/Images/InnerDockPaneInside.png"
                     Stretch="None">
              </Image>
            </Border>
          </Grid>
        </Grid>
      </Canvas>
    </ControlTemplate>
  </Setter.Value>
</Setter>

您需要更改的元素的名称中包含 "DropTarget"。完整版样式在这里：https://github.com/xceedsoftware/wpftoolkit/blob/master/ExtendedWPFToolkitSolution/Src/Xceed.Wpf.AvalonDock/Themes/generic.xaml 从第 479 行开始。

如何在 AvalonDock 2(LayoutDocumentPane) 中禁用左、右、上、下放置目标

How to disable left, right, top and bottom drop targets in AvalonDock 2(LayoutDocumentPane)

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avalondock