WPF RichTextBox-如何检测OverTypeMode? [英] WPF RichTextBox - How to Detect OverTypeMode ?

问题描述

我需要能够确定WPF RichTextBox中插入模式是否处于活动状态.我试过像这样使用反射:

I need to be able to determine if insert mode is active in a WPF RichTextBox. I tried using reflection like so:

PropertyInfo pInfo = this.GetType().GetProperty("_OvertypeMode", BindingFlags.NonPublic | BindingFlags.Instance);

但是，我可以找到的RichTextBox中不存在属性_OverTypeMode.

有谁知道该怎么做?

Google帮不上忙.

However, the property _OverTypeMode doesn''t exist in the RichTextBox that I could find.

Does anyone know how to do this?

Google was no help.

推荐答案

我发现在WPF中，实例化控件时，TextBox或RichTextBox始终默认为Insert为ON.有了这些知识，我就可以简单地跟踪Key.Insert的按下情况，并维护自己的指示状态的变量.

问题已解决.

I found out that in WPF, a TextBox or RichTextBox always defaults to Insert being ON when the control is instantiated. With that knowledge, I simply track the pressing of Key.Insert, and maintain my own variable that indicates status.

Problem solved.

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