用于更改RTB中文本的按钮？ [英] button for change the text in the RTB ?

问题描述

嗨

Hi

我做了一些代码已经有很长时间了。所以我忘记了基本的b
我想要做的是当我点击（粗体或斜体）按钮时，RTB上的文字变为粗体，再按一下该按钮，文本恢复正常。

It been long time since i do some codes. so i forget the basic
What i want to do is that when i click on a (Bold or Italic) button the text on the RTB become bold and another click on that button the text go back normal.

请问一些代码吗？

谢谢

推荐答案

您好

以下是可以解决的问题：

Here is something to work on:

BOLD

		' bold
		If Not RTB.SelectionFont Is Nothing Then
			Dim cf As System.Drawing.Font = RTB.SelectionFont
			Dim nf As System.Drawing.FontStyle
			If RTB.SelectionFont.Bold = True Then
				nf = FontStyle.Regular
			Else
				nf = FontStyle.Bold
			End If
			RTB.SelectionFont = New Font(cf.FontFamily, cf.Size, nf)
		End If

ITALIC

' italic
		If Not RTB.SelectionFont Is Nothing Then
			Dim cf As System.Drawing.Font = RTB.SelectionFont
			Dim nf As System.Drawing.FontStyle
			If RTB.SelectionFont.Italic = True Then
				nf = FontStyle.Regular
			Else
				nf = FontStyle.Italic
			End If
			RTB.SelectionFont = New Font(cf.FontFamily, cf.Size, nf)
		End If

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