这对调试很有趣。原来窗口的样式有一个错误：如果系统被定义为IsGlassEnabled == true（在 Win7 Aero 主题中true），那么窗口依赖于 Microsoft.Windows.Shell.WindowChrome（来自 Microsoft.Windows.Shell 程序集）绘制窗口的边框和顶部按钮；并且此 WindowChrome 将其GlassFrameThickness属性设置为与set to8,30,8,8结合使用。NonClientFrameEdgesBottom
发生的情况是，由于AllowsTransparency == true玻璃边框是透明的，但窗口仍然从整体窗口大小“削减”其厚度，因为WindowChrome定义了NonClientFrameEdges="Bottom"，从而削减了ResizeGrip视图。
如果您（疯狂地）将窗口拖到屏幕上，您会看到这一点 - 您会看到ResizeGrip闪烁。
为了解决这个问题，我们需要定义一个新WindowChrome的 with NonClientFrameEdges="None"（或两者）并仅在（我使用 App.xaml 中定义的应用程序资源并仅定义）GlassFrameThickness = 0时将其分配给窗口：IsGlassEnabled == true && AllowsTransparency == trueNonClientFrameEdges="None"
1. Add these namespaces to App.xaml:
xmlns:ribbon="clr-namespace:Microsoft.Windows.Controls.Ribbon;assembly=RibbonControlsLibrary"
xmlns:ribbonPrimitives="clr-namespace:Microsoft.Windows.Controls.Ribbon.Primitives;assembly=RibbonControlsLibrary"
xmlns:shell="clr-namespace:Microsoft.Windows.Shell;assembly=Microsoft.Windows.Shell"
2. Add these resources:
<ribbonPrimitives:RibbonWindowSmallIconConverter x:Key="RibbonWindowSmallIconConverter" />
<shell:WindowChrome x:Key="WindowChromeWithGlassAndTransparency"
NonClientFrameEdges="None" />
<Style x:Key="MyStyle"
TargetType="{x:Type ribbon:RibbonWindow}">
<Style.Triggers>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding Path=IsGlassEnabled, Source={x:Static shell:SystemParameters2.Current}}"
Value="True" />
<Condition Binding="{Binding AllowsTransparency, RelativeSource={RelativeSource Mode=Self}}"
Value="False" />
</MultiDataTrigger.Conditions>
<Setter Property="shell:WindowChrome.WindowChrome"
Value="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type ribbon:Ribbon}, ResourceId=WindowChromeAeroWithGlass}}" />
</MultiDataTrigger>
<MultiDataTrigger>
<MultiDataTrigger.Conditions>
<Condition Binding="{Binding Path=IsGlassEnabled, Source={x:Static shell:SystemParameters2.Current}}"
Value="True" />
<Condition Binding="{Binding AllowsTransparency, RelativeSource={RelativeSource Mode=Self}}"
Value="True" />
</MultiDataTrigger.Conditions>
<Setter Property="shell:WindowChrome.WindowChrome"
Value="{DynamicResource WindowChromeWithGlassAndTransparency}" />
</MultiDataTrigger>
<DataTrigger Binding="{Binding Path=IsGlassEnabled, Source={x:Static shell:SystemParameters2.Current}}"
Value="True">
<!--This is the original setter of the chrome that makes all the trouble-->
<!--<Setter Property="shell:WindowChrome.WindowChrome"
Value="{DynamicResource {ComponentResourceKey TypeInTargetAssembly={x:Type ribbon:Ribbon}, ResourceId=WindowChromeAeroWithGlass}}" />-->
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ribbon:RibbonWindow}">
<Grid>
<Border Name="PART_ClientAreaBorder"
Background="{TemplateBinding Control.Background}"
BorderBrush="{TemplateBinding Control.BorderBrush}"
BorderThickness="{TemplateBinding Control.BorderThickness}"
Margin="{Binding Path=WindowNonClientFrameThickness, Source={x:Static shell:SystemParameters2.Current}}" />
<Border BorderThickness="{Binding Path=(shell:WindowChrome.WindowChrome).ResizeBorderThickness, RelativeSource={RelativeSource TemplatedParent}}">
<Grid>
<Image Name="PART_Icon"
shell:WindowChrome.IsHitTestVisibleInChrome="True"
HorizontalAlignment="Left"
VerticalAlignment="Top"
Source="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Icon, Converter={StaticResource RibbonWindowSmallIconConverter }}"
Width="{Binding Path=SmallIconSize.Width, Source={x:Static shell:SystemParameters2.Current}}"
Height="{Binding Path=SmallIconSize.Height, Source={x:Static shell:SystemParameters2.Current}}" />
<AdornerDecorator>
<ContentPresenter Name="PART_RootContentPresenter" />
</AdornerDecorator>
<ResizeGrip Name="WindowResizeGrip"
shell:WindowChrome.ResizeGripDirection="BottomRight"
HorizontalAlignment="Right"
VerticalAlignment="Bottom"
Visibility="Collapsed"
IsTabStop="False" />
</Grid>
</Border>
</Grid>
<ControlTemplate.Triggers>
<Trigger Value="{x:Null}"
Property="Icon">
<Setter TargetName="PART_Icon"
Property="Source"
Value="/RibbonControlsLibrary;component/Images/GlassyDefaultSystemIcon.png" />
</Trigger>
<Trigger Property="WindowState"
Value="Maximized">
<Setter TargetName="PART_Icon"
Property="Margin"
Value="0,2,0,0" />
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ResizeMode"
Value="CanResizeWithGrip" />
<Condition Property="WindowState"
Value="Normal" />
</MultiTrigger.Conditions>
<Setter TargetName="WindowResizeGrip"
Property="Visibility"
Value="Visible" />
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</DataTrigger>
</Style.Triggers>
</Style>
3. In your window use the new style:
<rib:RibbonWindow ....
Style="{StaticResource MyStyle}">
....
</rib:RibbonWindow>
几乎与DataTrigger原始样式相同，只有一处修改：我已经评论了 WindowChrome 的设置器。
MultiDataTriggers是我的补充。他们检查属性的值并应用AllowsTransparency正确的 WindowChrome：如果值为原始值，则为原始值false，如果值为.NonClientFrameEdges="None"GlassFrameThickness = 0true
注意：此解决方案消除了使用边缘调整窗口大小的能力，窗口大小的调整仅由ResizeGrip.