در Wpf این کار راحته اینو چند وقت پیش نوشتم ببینم به دردت میخوره:
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<Style TargetType="{x:Type Button}" x:Key="CloseButton">
<Setter Property="Width" Value="15"/>
<Setter Property="Height" Value="15"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="BtnBorder" Margin="0" Padding="0" Background="Transparent"
BorderBrush="Transparent" BorderThickness="0">
<Grid Margin="0" Background="Transparent"
HorizontalAlignment="Right"
VerticalAlignment="Center"
>
<Path x:Name="Path1" Margin="0"
Stroke="White"
Width="10" Height="10"
StrokeThickness="3"
Data="M 0 0 L 10 10 M 0 10 L 10 0"
>
</Path>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver"
Value="True">
<Setter TargetName="Path1"
Property="Stroke"
>
<Setter.Value>
<LinearGradientBrush StartPoint="0.5,1" EndPoint="0.5,0">
<GradientStop Color="Gray" Offset="0"/>
<GradientStop Color="Silver" Offset="0.5"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Trigger>
<Trigger Property="IsPressed" Value="True">
<Setter TargetName="Path1"
Property="Stroke">
<Setter.Value>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Color="Gray" Offset="0"/>
<GradientStop Color="Silver" Offset="0.5"/>
</LinearGradientBrush>
</Setter.Value>
</Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<!--*****************************************-->
<!--*****************Window******************-->
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<Style TargetType="Window" x:Key="CDN WinStyle">
<Setter Property="AllowsTransparency" Value="True"/>
<Setter Property="WindowStyle" Value="None"/>
<Setter Property="RenderTransform" >
<Setter.Value>
<RotateTransform Angle="0" x:Name="A1"/>
</Setter.Value>
</Setter>
<Setter Property="RenderTransformOrigin" Value="1,2"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Window">
<Grid x:Name="WinGrid" Background="Transparent" >
<Grid.RowDefinitions >
<RowDefinition Height="25"/>
<RowDefinition />
</Grid.RowDefinitions>
<Border x:Name="ToolBorder"
Margin="0"
Padding="2"
Grid.Row="0"
CornerRadius="4,4,0,0"
BorderBrush="#96b1d0"
MouseLeftButtonDown="ToolBorder_MouseLeftButtonDown"
>
<!--**************************CloseButton**********-->
<Button Margin="1,0,8,0" Padding="2" Style="{StaticResource CloseButton}" Focusable="False" HorizontalAlignment="Right" VerticalAlignment="Center" Click="Button_Click" />
<Border.Background>
<LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
<GradientStop Color="#848589" Offset="0.4"/>
<GradientStop Color="#707276" Offset="0.5"/>
</LinearGradientBrush>
</Border.Background>
</Border>
<Border x:Name="MainBorder"
Margin="0"
Padding="0"
CornerRadius="0,0,4,4"
BorderBrush="#767a7d"
BorderThickness="1,0,1,1"
Grid.Row="1"
RenderTransformOrigin="0.5,0.5"
Background="#626469"
>
<Border x:Name="ToBorder" Margin="5"
Padding="10"
RenderTransformOrigin="0.5,0.5"
CornerRadius="6"
Background="#56595c"
>
<Border.RenderTransform>
<RotateTransform Angle="0" x:Name="Trans"/>
</Border.RenderTransform>
<ContentPresenter
HorizontalAlignment="{TemplateBinding HorizontalAlignment}"
VerticalAlignment="{TemplateBinding VerticalAlignment}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
/>
</Border>
</Border>
<TextBlock x:Name="tbk"
Text="{TemplateBinding Window.Title}"
HorizontalAlignment="Left"
VerticalAlignment="Center"
Padding="2"
Margin="5"
Foreground="White"
FontSize="13"
Grid.Row="0"
/>
</Grid>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>