bug - 签名字体设置不对应

Demo/Examples/Compdfkit_Tools/Annotation/PDFAnnotationPanel/PDFAnnotationUI/CPDFCreateSignatureDialog.xaml

@@ -383,6 +383,7 @@
                         SelectionChanged="TextName_SelectionChanged"
                         x:Name="TextName"
                         SelectedIndex="0"
+                        Loaded="TextName_Loaded"
                         HorizontalAlignment="Left"
                         VerticalAlignment="Center">
                             <ComboBoxItem Content="Arial"/>

Demo/Examples/Compdfkit_Tools/Annotation/PDFAnnotationPanel/PDFAnnotationUI/CPDFCreateSignatureDialog.xaml.cs

@@ -381,7 +381,7 @@ namespace Compdfkit_Tools.Annotation.PDFAnnotationPanel.PDFAnnotationUI
         {
             if (TextName.SelectedIndex != -1 && IsPageLoaded)
             {
-                InPutTextBox.FontFamily = new System.Windows.Media.FontFamily(TextName.SelectionBoxItem.ToString());
+                InPutTextBox.FontFamily = new System.Windows.Media.FontFamily((TextName.SelectedItem as ComboBoxItem).Content.ToString());
             }
         }