RichTextBox的C＃设置插入符位置的WinForms [英] RichTextBox C# Set caret location winforms

问题描述

我建立用户在其中输入其文本到一个RichTextBox一个聊天应用程序。

I am building a chat application where the user enters its text to a richtextbox.

在丰富的文本框有它说最初的文字：我说：。

In the rich text box there is an initial text which says: "Me: ".

现在，当用户按下Home键我想位于尖号的我说：之后的字符串。因此，对于SHIFT + HOME组合或三重鼠标点击或按Ctrl +左光标等。

Now, when the user press the Home button I want the caret to be located after the "Me: " string. So for Shift+Home combination or for triple mouse click or for Ctrl + left cursor etc..

什么办法可以做到？

我已经试过

[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool SetCaretPos(int X, int Y);

提前

感谢，
盎司。

thanks in advance, Oz.

推荐答案

发现谷歌搜索的财产SelectionProtected

Found it googling on the property SelectionProtected

richTextBoxUserText.Text = INITIAL_TEXT;
richTextBoxUserText.SelectAll();
richTextBoxUserText.SelectionColor = Color.Red;
richTextBoxUserText.SelectionProtected = true;
richTextBoxUserText.SelectionLength = 0;
richTextBoxUserText.SelectionStart = richTextBoxUserText.TextLength + 1;

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