add doc of visualelement and windowattach
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@@ -1,5 +1,79 @@
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---
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title: 建设中
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title: VisualElement 可视化元素
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---
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建设中
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# 属性
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| 名称 | 用途 |
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| -------------- | ---------------- |
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| HighlightBrush | 设置控件高亮颜色 |
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| Text | 设置文本内容 |
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# 使用案例
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对应`xaml`中添加`HandyControl`对应的命名空`xmlns:hc="https://handyorg.github.io/handycontrol"`
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## HighlightBrush 设置控件高亮颜色
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```xml
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<UniformGrid Margin="22,22,0,0" Rows="2" Columns="2">
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<RadioButton Margin="10,10,0,0" Background="{DynamicResource SecondaryRegionBrush}"
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Style="{StaticResource RadioButtonIcon}"
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Content="RadioButton" IsChecked="True"
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GroupName="radio1"/>
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<RadioButton Margin="10,10,0,0" BorderThickness="1"
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Style="{StaticResource RadioButtonIcon}"
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hc:VisualElement.HighlightBrush="YellowGreen"
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Content="RadioButton"
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GroupName="radio2"/>
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</UniformGrid>
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```
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如下截图为一组选中状态时的高亮对比结果,左图为样式`默认颜色`,右侧为个人`自定义颜色`
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## Text 设置文本内容
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可视化文本内容,主要用于微软`WPF`库中原生控件需要显示辅助文本,但并没有对应的文本内容显示属性时,通过控件的自定义样式时,使用此附加属性进行进行文本内容的显示。
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例如:当自定义进度条,需要显示文本时,本身缺少显示额外文本内容的属性,可以通过自定样式显示对应文本,以`Text`作为文本内容承载属性
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自定义样式:
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```xml
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<Style x:Key="ProgressBarBaseStyle" TargetType="ProgressBar">
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<Setter Property="controls:VisualElement.Text">
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<Setter.Value>
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.....忽略代码.....
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</Setter.Value>
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</Setter>
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<Setter Property="Template">
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<Setter.Value>
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<ControlTemplate TargetType="ProgressBar">
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<controls:SimplePanel x:Name="TemplateRoot">
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....忽略代码....
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<controls:SimplePanel HorizontalAlignment="Left">
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....忽略代码....
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<TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" Foreground="{DynamicResource TextIconBrush}" Text="{Binding Path=(controls:VisualElement.Text),RelativeSource={RelativeSource TemplatedParent}}"/>
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</controls:SimplePanel>
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</controls:SimplePanel>
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</ControlTemplate>
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</Setter.Value>
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</Setter>
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</Style>
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```
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`xaml`中的使用:
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```xml
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<UniformGrid Margin="22,22,0,0" Rows="2" Columns="2">
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<ProgressBar Style="{DynamicResource ProgressBarDanger}"
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hc:VisualElement.Text="这是可视化文本"
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Background="YellowGreen"></ProgressBar>
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</UniformGrid>
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```
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效果:
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