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可以使用onpaint事件进行重绘使combobox的是边框四个直角变成弧形。这里需要用到gdi+绘制的知识和onpait事件。窗体和combobox设置自动重绘为true即可。你可以参考下gdi的圆角绘制的知识的。这里很容易做到的。希望能帮到你。有疑问继续提问哈。
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可以利用font 设置。设置方法如下:
TextBox1.Font = New System.Drawing.Font("宋体", 10)
也可以通过字体对话框来实现 如:
Private Sub myButton_Click(sender As Object, e As EventArgs)
Dim myFontDialog As FontDialog
myFontDialog = New FontDialog()
If myFontDialog.ShowDialog() = DialogResult.OK Then
' Set the control's font.
myDateTimePicker.Font = myFontDialog.Font
End If
End Sub
这个类继承自Panel,把它加到你的项目里面,先运行一下,然后从工具箱里把它拖到窗体上,然后再向里面添加其它控件就可以了,支持Shift加选,Alt减选
Imports System.Linq
Imports System.Collections
Public Class MyPanel
Inherits Panel
' 选择模式,相交还是包含
Enum SelectMode
Intersects
Contains
End Enum
Dim down As New Point(-1, -1)
Dim rect As Rectangle
Dim selected As New List(Of Control)
Dim editting As IEnumerable(Of Control)
Dim mode As SelectMode = SelectMode.Contains
Dim shift, alt As Boolean
Public Sub New()
Me.DoubleBuffered = True
End Sub
Protected Overrides Sub OnMouseDown(e As MouseEventArgs)
MyBase.OnMouseDown(e)
down = e.Location
editting = selected.ToArray().ToList()
OnMouseMove(e)
End Sub
Protected Overrides Sub OnMouseMove(e As MouseEventArgs)
MyBase.OnMouseMove(e)
If e.Button = Windows.Forms.MouseButtons.Left Then
Dim loc As New Point(Math.Min(down.X, e.X), Math.Min(down.Y, e.Y))
Dim size As New Size(Math.Abs(down.X - e.X), Math.Abs(down.Y - e.Y))
rect = New Rectangle(loc, size)
Dim cs As New List(Of Control)
For Each c In Controls
cs.Add(c)
Next
Dim a = cs.Where(Function(n As Control) (mode = SelectMode.Contains And rect.Contains(n.Bounds)) Or (mode = SelectMode.Intersects And rect.IntersectsWith(n.Bounds)))
If shift Then editting = a.Union(selected) Else If alt Then editting = selected.Except(a) Else editting = a
Invalidate()
End If
End Sub
Protected Overrides Sub OnMouseUp(e As MouseEventArgs)
MyBase.OnMouseUp(e)
down = New Point(-1, -1)
selected = editting.ToList()
editting = Nothing
Invalidate()
End Sub
Protected Overrides Function ProcessKeyPreview(ByRef m As Message) As Boolean
Dim KeyCode As Keys = CInt(m.WParam) And CInt(Keys.KeyCode)
Dim d As Boolean
If m.Msg = H100 Or m.Msg = H104 Then d = True Else If m.Msg = H101 Or m.Msg = H105 Then d = False Else Return MyBase.ProcessKeyPreview(m)
If KeyCode = Keys.ShiftKey Then
shift = d
ElseIf KeyCode = Keys.Menu Then
alt = d
End If
Return MyBase.ProcessKeyPreview(m)
End Function
Protected Overrides Sub OnPaint(e As PaintEventArgs)
MyBase.OnPaint(e)
For Each c As Control In IIf(editting Is Nothing, selected, editting)
e.Graphics.DrawRectangle(New Pen(Color.Gray) With {.DashStyle = Drawing2D.DashStyle.DashDot}, c.Left - 1, c.Top - 1, c.Width + 1, c.Height + 1)
Next
If (down.X 0) Then e.Graphics.DrawRectangle(New Pen(Color.Gray) With {.DashStyle = Drawing2D.DashStyle.DashDot}, rect)
End Sub
End Class
怎么用vb编程操作word绘制表格的边框操作步骤:
1、单击开始----查找按钮(或按Ctrl + F组合键);
2、弹出查找对话框,在查找内容处输入需要查找的数字,在以下项中查找处选择主文档,单击关闭按钮;
3、此时文档中所的查找的数字都被选中。