Telerik Silverlight4控件源代码研究

悬赏园豆：200 [已关闭问题] 关闭于 2012-02-21 21:59

　　小弟我最近在修改Telerik控件的源代码，我发现他们在写XAML代码的时候又一个很有意思的写法，请看下图:

<?BODY BEGIN?>
    <?WPF BEGIN?>
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"     
        xmlns:controls="clr-namespace:Telerik.Windows.Controls"
        xmlns:telerikData="clr-namespace:Telerik.Windows.Data"
        xmlns:expressions="clr-namespace:Telerik.Windows.Controls.Expressions"
    <?WPF END?>
    <?SILVERLIGHT BEGIN?>
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:controls="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Expressions"
        xmlns:telerikData="clr-namespace:Telerik.Windows.Data;assembly=Telerik.Windows.Data"
        xmlns:expressions="clr-namespace:Telerik.Windows.Controls.Expressions;assembly=Telerik.Windows.Controls.Expressions"
    <?SILVERLIGHT END?>
<?BODY END?>

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    <?include(../Namespaces.xaml)?>
    >

    <?BODY BEGIN?>
    <telerik:Expression_DarkTheme x:Key="Theme"/>
    <SolidColorBrush x:Key="ControlBackground" Color="#FF333333"/>
    <SolidColorBrush x:Key="ExpressionEditorTextBox_Background" Color="#FF333333"/>
    <SolidColorBrush x:Key="RadExpressionEditor_InfoPanel_BorderBrush" Color="#FF333333"/>
    <SolidColorBrush x:Key="ControlOuterBorder" Color="#FF595959"/>
    <SolidColorBrush x:Key="RadExpressionEditor_InfoPanel_Background" Color="#FF333333"/>
    <SolidColorBrush x:Key="Control_Foreground" Color="#FFDDDDDD"/>
    <SolidColorBrush x:Key="RadExpressionEditor_ResultsPanel_Background" Color="#FF3D3D3D"/>
    <SolidColorBrush x:Key="CalculationPanel_Background" Color="#FF575859"/>
    <SolidColorBrush x:Key="CalculationPanel_Foreground" Color="#FFC5C2C2"/>
    <Color x:Key="FunctionColor_Foreground">#FF5597BB</Color>
    <Color x:Key="MemberColor_Foreground">#FFFFC66D</Color>
    <Color x:Key="StringColor_Foreground">#FF8AC25C</Color>
    <Color x:Key="DateTimeColor_Foreground">#FFCC781F</Color>
    <?BODY END?>
</ResourceDictionary>

他们先把页面中的命名空间给放在一个单独的XAML文件中，然后在需要使用命名空间的页面将命名空间文件导入进去，用<?include?>指令给导入，我从没见过这种写法，并且两个xaml文件的生成操作属性都是:PreprocessedXamlInclude，我想可能是他们自己写的自定义生成操作，但是具体咋回儿事儿还是不清楚，希望懂的人能给点解释。。。。小弟不胜感激

xaml silverlight4

问题补充：

提高下悬赏，希望能给一个满意答案!!!!