RichEditBox 使用自定义菜单
最后更新于:2022-04-01 20:23:07
老周:当RichEditBox控件的上下文菜单即将弹出时,会引发ContextMenuOpening事件,我们需要处理该事件,并且将e.Handled属性设置为true,这样才能阻止默认上下文菜单的弹出
在RichEditBox控件上声明附加的菜单项
~~~
~~~
处理OnContextMenuOpening
~~~
private void OnContextMenuOpening(object sender , ContextMenuEventArgs e)
{
//阻止弹出默认的上下文菜单,然后,调用ShowAt方法在指定的坐标处打开菜单
e.Handled = true;
MenuFlyout menu = FlyoutBase.GetAttachedFlyout(redit) as MenuFlyout;
menu?.ShowAt(redit , new Point(e.CursorLeft , e.CursorTop));
}
~~~
处理复制粘贴
~~~
private void OnCopy(object sender , RoutedEventArgs e)
{
//复制
redit.Document.Selection.Copy();
}
private void OnCut(object sender , RoutedEventArgs e)
{
//剪切
redit.Document.Selection.Cut();
}
private void OnPaste(object sender , RoutedEventArgs e)
{
//粘贴
redit.Document.Selection.Paste(0);
//Paste 要在粘贴操作中使用的剪贴板格式。零表示最佳格式
}
~~~
处理OnFontSize
~~~
///
/// 设置字体
///
///
///
private void OnFontSize(object sender , RoutedEventArgs e)
{
MenuFlyoutItem item = sender as MenuFlyoutItem;
// 获取字号
float size = Convert.ToSingle(item.Tag);
redit.Document.Selection.CharacterFormat.Size = size;
}
~~~
~~~
///
/// 加粗
///
///
///
private void OnBold(object sender , RoutedEventArgs e)
{
//using Windows.UI.Text;
ToggleMenuFlyoutItem item = sender as ToggleMenuFlyoutItem;
redit.Document.Selection.CharacterFormat.Bold = item.IsChecked ? FormatEffect.On : FormatEffect.Off;
}
private void OnUnderline(object sender , RoutedEventArgs e)
{
MenuFlyoutItem item = sender as MenuFlyoutItem;
int x = Convert.ToInt32(item.Tag);
UnderlineType unlinetp;
switch (x)
{
case -1: // 无
unlinetp = UnderlineType.None;
break;
case 0: // 单实线
unlinetp = UnderlineType.Single;
break;
case 1: // 双实线
unlinetp = UnderlineType.Double;
break;
case 2: // 虚线
unlinetp = UnderlineType.Dash;
break;
default:
unlinetp = UnderlineType.None;
break;
}
redit.Document.Selection.CharacterFormat.Underline = unlinetp;
}
~~~
~~~
private void OnTinct(object sender , RoutedEventArgs e)
{
MenuFlyoutItem item = sender as MenuFlyoutItem;
string tinct = item.Tag as string;
Windows.UI.Color color = new Windows.UI.Color();
switch (tinct)
{
case "黑色":
color= Windows.UI.Colors.Black;
break;
case "蓝色":
color = Windows.UI.Colors.Blue;
break;
case "白色":
color = Windows.UI.Colors.White;
break;
default:
break;
}
redit.Document.Selection.CharacterFormat.BackgroundColor = color;
}
~~~
颜色在Windows.UI.Color
里面代码都是抄老周的
![这里写图片描述](https://docs.gechiui.com/gc-content/uploads/sites/kancloud/2016-04-08_5707636b8545f.jpg "")
参考:[http://www.cnblogs.com/tcjiaan/p/4937301.html](http://www.cnblogs.com/tcjiaan/p/4937301.html)
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