回答編集履歴
2
見直しキャンペーン中
answer
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@@ -239,4 +239,26 @@
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</Grid>
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</Window>
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```
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```cs
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using System;
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using System.Globalization;
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using System.Windows;
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using System.Windows.Data;
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namespace Questions250393
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{
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public class PointConverter : IMultiValueConverter
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{
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public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
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=> new Point((double)values[0], (double)values[1]);
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public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
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=> throw new NotImplementedException();
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}
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public partial class MainWindow : Window
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{
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public MainWindow() => InitializeComponent();
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}
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}
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```
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見直しキャンペーン中
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### グラデーション
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> 実際は必ずY方向に対してかかるみたいです。
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デフォルトだと右下方向ではありませんか?
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`StartPoint`
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`MappingMode="Absolute"`にすればまだましそうです。
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代替は`Effect`
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<Line.Effect>
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</Window>
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```
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1
|
+
### グラデーション
|
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2
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> 実際は必ずY方向に対してかかるみたいです。
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3
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4
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デフォルトだと右下方向ではありませんか?
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`StartPoint`・`EndPoint`でどの方向にも向きますが、線だと扱いづらいですね。
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`MappingMode="Absolute"`にすればまだましそうです。
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### エフェクト
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`OuterGlowBitmapEffect`等`BitmapEffect`は、.NET Framework 4で廃止になりました。
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代替は`Effect`で高速な上`ShaderEffect`を使えば何でもできそうですが、気の利いた面白いものを用意してくれていないです(`BlurEffect`と`DropShadowEffect`のみ)
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基本的には`DropShadowEffect`を使うしかなさそうです(光って見えるかどうかはよくわからないです^^;
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```xml
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<Window
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x:Class="Questions250393.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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xmlns:local="clr-namespace:Questions250393"
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Width="800"
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Height="450">
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<Window.Resources>
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<!-- double2つをPointにして返すIMultiValueConverter -->
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<local:PointConverter x:Key="PointConverter" />
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</Window.Resources>
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<Grid>
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<Grid.ColumnDefinitions>
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<ColumnDefinition />
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<ColumnDefinition />
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</Grid.ColumnDefinitions>
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<GroupBox Header="グラデーション">
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<Canvas>
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<!-- デフォルト斜め -->
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<Rectangle Width="50" Height="50">
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<Rectangle.Fill>
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<LinearGradientBrush>
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Rectangle.Fill>
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</Rectangle>
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<!-- 縦 -->
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<Rectangle
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Canvas.Top="60"
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Width="50"
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Height="50">
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<Rectangle.Fill>
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<LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Rectangle.Fill>
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</Rectangle>
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<!-- 横 -->
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<Rectangle
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Canvas.Top="120"
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Width="50"
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Height="50">
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<Rectangle.Fill>
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<LinearGradientBrush StartPoint="0,0" EndPoint="1,0">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Rectangle.Fill>
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</Rectangle>
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<!-- X1,Y1が0で右か下方向ならStartPoint="0,0" EndPoint="1,1"で行ける -->
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<Line
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Canvas.Left="200"
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Canvas.Top="100"
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StrokeThickness="10"
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X1="0"
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X2="100"
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Y1="0"
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Y2="0">
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<Line.Stroke>
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<LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Line.Stroke>
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</Line>
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<Line
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Canvas.Left="200"
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Canvas.Top="100"
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StrokeThickness="10"
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X1="0"
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X2="100"
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Y1="0"
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Y2="100">
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<Line.Stroke>
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<LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Line.Stroke>
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</Line>
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<Line
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Canvas.Left="200"
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Canvas.Top="100"
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StrokeThickness="10"
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X1="0"
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X2="0"
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Y1="0"
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Y2="100">
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<Line.Stroke>
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<LinearGradientBrush StartPoint="0,0" EndPoint="1,1">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Line.Stroke>
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</Line>
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<!-- X2,Y2がマイナスになる場合MappingMode="Absolute" EndPointにマイナスで行けた -->
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<Line
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Canvas.Left="200"
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Canvas.Top="100"
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StrokeThickness="10"
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X1="0"
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X2="-100"
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Y1="0"
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Y2="100">
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<Line.Stroke>
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<LinearGradientBrush MappingMode="Absolute" StartPoint="0,0" EndPoint="-100,100">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Line.Stroke>
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</Line>
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<!-- べた置きでも同様 -->
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<Line
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StrokeThickness="10"
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X1="200"
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X2="100"
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Y1="100"
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Y2="100">
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<Line.Stroke>
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<LinearGradientBrush MappingMode="Absolute" StartPoint="200,100" EndPoint="100,100">
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<GradientStop Offset="0" Color="Red" />
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<GradientStop Offset="1" Color="Blue" />
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</LinearGradientBrush>
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</Line.Stroke>
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</Line>
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<!-- バインドできなくはないがどうなのか。。。 -->
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|
148
|
+
<Line
|
|
149
|
+
StrokeThickness="10"
|
|
150
|
+
X1="200"
|
|
151
|
+
X2="100"
|
|
152
|
+
Y1="100"
|
|
153
|
+
Y2="0">
|
|
154
|
+
<Line.Stroke>
|
|
155
|
+
<LinearGradientBrush MappingMode="Absolute">
|
|
156
|
+
<LinearGradientBrush.StartPoint>
|
|
157
|
+
<MultiBinding Converter="{StaticResource PointConverter}">
|
|
158
|
+
<Binding Path="X1" RelativeSource="{RelativeSource FindAncestor, AncestorType=Line}" />
|
|
159
|
+
<Binding Path="Y1" RelativeSource="{RelativeSource FindAncestor, AncestorType=Line}" />
|
|
160
|
+
</MultiBinding>
|
|
161
|
+
</LinearGradientBrush.StartPoint>
|
|
162
|
+
<LinearGradientBrush.EndPoint>
|
|
163
|
+
<MultiBinding Converter="{StaticResource PointConverter}">
|
|
164
|
+
<Binding Path="X2" RelativeSource="{RelativeSource FindAncestor, AncestorType=Line}" />
|
|
165
|
+
<Binding Path="Y2" RelativeSource="{RelativeSource FindAncestor, AncestorType=Line}" />
|
|
166
|
+
</MultiBinding>
|
|
167
|
+
</LinearGradientBrush.EndPoint>
|
|
168
|
+
<GradientStop Offset="0" Color="Red" />
|
|
169
|
+
<GradientStop Offset="1" Color="Blue" />
|
|
170
|
+
</LinearGradientBrush>
|
|
171
|
+
</Line.Stroke>
|
|
172
|
+
</Line>
|
|
173
|
+
</Canvas>
|
|
174
|
+
</GroupBox>
|
|
175
|
+
|
|
176
|
+
<GroupBox Grid.Column="1" Header="エフェクト">
|
|
177
|
+
<Canvas>
|
|
178
|
+
<!-- ブラー -->
|
|
179
|
+
<Line
|
|
180
|
+
Canvas.Left="50"
|
|
181
|
+
Canvas.Top="50"
|
|
182
|
+
Stroke="Green"
|
|
183
|
+
StrokeThickness="2"
|
|
184
|
+
X2="100" />
|
|
185
|
+
<Line
|
|
186
|
+
Canvas.Left="200"
|
|
187
|
+
Canvas.Top="50"
|
|
188
|
+
Stroke="Green"
|
|
189
|
+
StrokeThickness="2"
|
|
190
|
+
X2="100">
|
|
191
|
+
<Line.Effect>
|
|
192
|
+
<BlurEffect Radius="5" />
|
|
193
|
+
</Line.Effect>
|
|
194
|
+
</Line>
|
|
195
|
+
|
|
196
|
+
<!-- ドロップシャドウ -->
|
|
197
|
+
<Line
|
|
198
|
+
Canvas.Left="50"
|
|
199
|
+
Canvas.Top="100"
|
|
200
|
+
Stroke="Blue"
|
|
201
|
+
StrokeThickness="2"
|
|
202
|
+
X2="100" />
|
|
203
|
+
<Line
|
|
204
|
+
Canvas.Left="200"
|
|
205
|
+
Canvas.Top="100"
|
|
206
|
+
Stroke="Blue"
|
|
207
|
+
StrokeThickness="2"
|
|
208
|
+
X2="100">
|
|
209
|
+
<Line.Effect>
|
|
210
|
+
<DropShadowEffect
|
|
211
|
+
BlurRadius="8"
|
|
212
|
+
ShadowDepth="0"
|
|
213
|
+
Color="Blue" />
|
|
214
|
+
</Line.Effect>
|
|
215
|
+
</Line>
|
|
216
|
+
|
|
217
|
+
<!-- 色を変えたほうが見栄えがいい? どう変えるんだという話だが -->
|
|
218
|
+
<Line
|
|
219
|
+
Canvas.Left="50"
|
|
220
|
+
Canvas.Top="150"
|
|
221
|
+
Stroke="Red"
|
|
222
|
+
StrokeThickness="2"
|
|
223
|
+
X2="100" />
|
|
224
|
+
<Line
|
|
225
|
+
Canvas.Left="200"
|
|
226
|
+
Canvas.Top="150"
|
|
227
|
+
Stroke="Red"
|
|
228
|
+
StrokeThickness="2"
|
|
229
|
+
X2="100">
|
|
230
|
+
<Line.Effect>
|
|
231
|
+
<DropShadowEffect
|
|
232
|
+
BlurRadius="8"
|
|
233
|
+
ShadowDepth="0"
|
|
234
|
+
Color="DeepPink" />
|
|
235
|
+
</Line.Effect>
|
|
236
|
+
</Line>
|
|
237
|
+
</Canvas>
|
|
238
|
+
</GroupBox>
|
|
239
|
+
</Grid>
|
|
240
|
+
</Window>
|
|
241
|
+
```
|
|
244
242
|

|