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RichTextBox:富文本框
常用属性:
DetectUrls:指示当输入一个URL地址时,RichTextBox 是否自动设置为 URL 的链接
ScrollBars:显示的滚动条类型。以下设置:
Both 在需要时同时显示水平滚动条和垂直滚动条
ForcedBoth 始终同时显示水平滚动条和垂直滚动条
ForcedHorizontal 始终显示水平滚动条
ForcedVertical 始终显示垂直滚动条
Horizontal 仅在文本比控件的宽度长时显示水平滚动条
None 不显示滚动条
Vertical 仅在文本比控件的高度长时显示垂直滚动条
SelectionColor
SelectionFont
SelectionIndent:所选内容开始行的左边缩进距离(像素)
SelectionRightIndent:所选内容开始行的右边缩进距离(像素)
常用方法:
CanPaste():可以粘贴指定数据格式的剪贴板信息
Public Function CanPaste (clipFormat As DataFormats.Format) As Boolean
参数clipFormat 是DataFormats 类字段,包括Bitmap、Text、Text、WaveAudio等(请参见MSDN DataFormats 类)。
Paste():在光标位置粘贴剪贴板内容。
SaveFile():将RichTextBox的内容保存到文件
LoadFile():载入文件
事件:
LinkClicked:单击了富文本框。
一个简单的例子:
Public Class Form2
Dim fontsize As Integer
Dim fontname As String
Private Sub Form2_Load(sender As Object, e As EventArgs) Handles MyBase.Load
fontsize = 10
fontname = “宋体”
End Sub
‘设置字体为宋体
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
fontname = “宋体”
RichTextBox1.SelectionFont = New Font(fontname, fontsize)
End Sub
‘设置字体为楷体
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
fontname = “楷体”
RichTextBox1.SelectionFont = New Font(fontname, fontsize)
End Sub
‘设置文字颜色为红色
Private Sub Button3_Click(sender As Object, e As EventArgs) Handles Button3.Click
RichTextBox1.SelectionColor = Color.Red
End Sub
‘设置文字颜色为蓝色
Private Sub Button4_Click(sender As Object, e As EventArgs) Handles Button4.Click
RichTextBox1.SelectionColor = Color.Blue
End Sub
‘设置文字段落左缩进为10
Private Sub Button5_Click(sender As Object, e As EventArgs) Handles Button5.Click
RichTextBox1.SelectionIndent = 10
End Sub
‘设置文字段落左缩进为20
Private Sub Button6_Click(sender As Object, e As EventArgs) Handles Button6.Click
RichTextBox1.SelectionIndent = 20
End Sub
‘设置文字段落右缩进为10
Private Sub Button7_Click(sender As Object, e As EventArgs) Handles Button7.Click
RichTextBox1.SelectionRightIndent = 10
End Sub
‘设置文字段落右缩进为20
Private Sub Button8_Click(sender As Object, e As EventArgs) Handles Button8.Click
RichTextBox1.SelectionRightIndent = 20
End Sub
‘设置文字大小为10磅
Private Sub Button9_Click(sender As Object, e As EventArgs) Handles Button9.Click
fontsize = 10
RichTextBox1.SelectionFont = New Font(fontname, fontsize)
End Sub
‘设置文字大小为20磅
Private Sub Button10_Click(sender As Object, e As EventArgs) Handles Button10.Click
fontsize = 12
RichTextBox1.SelectionFont = New Font(fontname, fontsize)
End Sub
‘插入一张图片
Private Sub Button11_Click(sender As Object, e As EventArgs) Handles Button11.Click
Dim bmp As Bitmap
bmp = Bitmap.FromFile(“d:\15af.jpg”)
‘将图片设置到剪贴板
Clipboard.SetDataObject(bmp)
‘设置格式
Dim MyFormat As DataFormats.Format = DataFormats.GetFormat(DataFormats.Bitmap)
‘检查是否可以粘贴指定的格式
If RichTextBox1.CanPaste(MyFormat) Then
‘Paste重载的一个版本,在光标位置粘贴指定格式的剪贴板内容
RichTextBox1.Paste(MyFormat)
End If
End Sub
‘当富文本框内的超链接被点击
Private Sub RichTextBox1_LinkClicked(sender As Object, e As LinkClickedEventArgs) Handles RichTextBox1.LinkClicked
Process.Start(e.LinkText)
End Sub
End Class
运行如下:
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