【求助】DockLayoutManager中FloatGroups背景色透明问题
需要在DockLayoutManager设计浮动面板FloatGroups，发现怎么都无法将其背景变为透明，以下是代码<dxdo:DockLayoutManager.FloatGroups>
<dxdo:FloatGroup GroupBorderStyle="NoBorder" BorderBrush="Transparent"FloatSize="200,200" FloatLocation="243.2,80.8000000000001">
<dxdo:LayoutPanel BorderBrush="Transparent"Background="Transparent" ShowBorder="False" x:Name="paneWarning1"Caption="报警信息" ShowCaptionImage="False" >
<dxdo:LayoutPanel.Appearance>
<dxdo:Appearance>
<dxdo:Appearance.Normal>
<dxdo:AppearanceObject>
<dxdo:AppearanceObject.Background>
<SolidColorBrush Color="#00FFF700" />
</dxdo:AppearanceObject.Background>
</dxdo:AppearanceObject>
</dxdo:Appearance.Normal>
<dxdo:Appearance.Active>
<dxdo:AppearanceObject Background="#00CD0A0A" Foreground="#FFF63737"/>
</dxdo:Appearance.Active>
</dxdo:Appearance>
</dxdo:LayoutPanel.Appearance>
</dxdo:LayoutPanel>
</dxdo:FloatGroup>
</dxdo:DockLayoutManager.FloatGroups>
运行以后浮动面板样式如下，并没有透明
求助各位大神有知道怎么解决的吗？
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