防止 按钮被挡住

XHWK.WKTool/XHMicroLessonSystemWindow.xaml

     <Grid x:Name="GridContent" Height="1030" Width="1276">
         <!--分3行-->
         <Grid.RowDefinitions>
-            <RowDefinition Height="100"/>
+            <RowDefinition Height="auto"/>
             <RowDefinition Height="*"/>
-            <RowDefinition Height="50"/>
+            <RowDefinition Height="auto"/>
         </Grid.RowDefinitions>
         <Grid Grid.Row="0" Background="#2D8CF0" MouseLeftButtonDown="Window_MouseLeftButtonDown" Margin="0,0,0,0" MinHeight="100px">
             <Grid.RowDefinitions>
                 <Button Cursor="Hand" x:Name="btnWhite" Background="#FFFFFF" Width="20" Height="20" Click="BtnWhite_Click" Margin="0,2,0,0" Visibility="Collapsed"/>
 
 
-                <Button Cursor="Hand" x:Name="btnRed" Background="#FF0000" Width="20" Height="20" Margin="5,-15,0,0" Click="BtnRed_Click">
+                <Button Cursor="Hand" x:Name="btnRed" Background="#FF0000" Width="20" Height="20" Margin="5,2,0,0" Click="BtnRed_Click">
                     <Image x:Name="imgRed" Source=".\Images\microLessonSystem_999.png" Width="12" Visibility="Visible"/>
                 </Button>
-                <Button Cursor="Hand" x:Name="btnGray" Background="#333333" Width="20" Height="20" Margin="5,-15,0,0" Click="BtnGray_Click">
+                <Button Cursor="Hand" x:Name="btnGray" Background="#333333" Width="20" Height="20" Margin="5,2,0,0" Click="BtnGray_Click">
                     <Image x:Name="imgGray" Source=".\Images\microLessonSystem_999.png" Width="12" Visibility="Collapsed"/>
                 </Button>
-                <Button Cursor="Hand" x:Name="btnCyanBlue" Background="#63D600" Width="20" Height="20" Margin="5,-15,0,0" Click="BtnCyanBlue_Click">
+                <Button Cursor="Hand" x:Name="btnCyanBlue" Background="#63D600" Width="20" Height="20" Margin="5,2,0,0" Click="BtnCyanBlue_Click">
                     <Image x:Name="imgCyanBlue" Source=".\Images\microLessonSystem_999.png" Width="12" Visibility="Collapsed"/>
                 </Button>
-                <Button Cursor="Hand" x:Name="btnYellow" Background="#FFBC00" Width="20" Height="20" Margin="5,-15,0,0" Click="BtnYellow_Click">
+                <Button Cursor="Hand" x:Name="btnYellow" Background="#FFBC00" Width="20" Height="20" Margin="5,2,0,0" Click="BtnYellow_Click">
                     <Image x:Name="imgYellow" Source=".\Images\microLessonSystem_999.png" Width="12" Visibility="Collapsed"/>
                 </Button>
-                <Button Cursor="Hand" x:Name="btnBlue" Background="#00B4FC" Width="20" Height="20" Margin="5,-15,0,0" Click="BtnBlue_Click">
+                <Button Cursor="Hand" x:Name="btnBlue" Background="#00B4FC" Width="20" Height="20" Margin="5,2,0,0" Click="BtnBlue_Click">
                     <Image x:Name="imgBlue" Source=".\Images\microLessonSystem_999.png" Width="12" Visibility="Collapsed"/>
                 </Button>
                 <TextBlock Text="粗细：" FontSize="14" Padding="15,5,0,0" Margin="5,5,0,0"/>