vb.net用splitter控件如何实现隐藏左右面板
vb.net用splitter控件如何实现隐藏左右面板 --------------------编程问答-------------------- 怎么没有人来回答啊 --------------------编程问答-------------------- 首先创建一个类，用来实现显示/隐藏其他控件Public Class mysplitter
Public Shared Sub addshowhideevent(ByVal sl As Splitter)
Dim lbl As New Label
lbl.text = "3"
lbl.Font = New System.drawing.Font("marlett", 7.0!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(2, Byte))
lbl.autosize = True
lbl.Location = New Point(CInt(-4), CInt(sl.Height / 2 - lbl.Height))
lbl.cursor = cursors.hand
lbl.forecolor = color.red
sl.controls.add(lbl)
sl.Width = CInt(4)
AddHandler lbl.Click, AddressOf lbl_click
AddHandler sl.resize, AddressOf splitter_resize
Dim tt As New ToolTip
tt.SetToolTip(lbl, "隐藏左边的的控件")
lbl.Tag = tt
End Sub
Private Shared Sub lbl_click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim lbl As Label = CType(sender, Label)
Dim targetctrl As Control
Dim sl As Splitter = CType(lbl.parent, Splitter)
Dim pctrl As Control = sl.parent
For Each temp As Control In pctrl.controls
If Not temp.equals(sl) Then
If sl.dock = dockstyle.left Then
If temp.dock = dockstyle.left AndAlso (Not temp.visible OrElse temp.left < sl.left) Then
targetctrl = temp
Exit For
End If
ElseIf sl.Dock = DockStyle.Top Then
If temp.Dock = DockStyle.Top AndAlso (Not temp.Visible OrElse temp.Top < sl.Top) Then
targetctrl = temp
Exit For
End If
End If
End If
Next
If Not targetctrl Is Nothing Then
Dim tt As ToolTip = CType(lbl.Tag, ToolTip)
If lbl.Text = "3" Then
lbl.Text = "4"
tt.SetToolTip(lbl, "显示左边的的控件")
targetctrl.Visible = False
Else
lbl.Text = "3"
tt.SetToolTip(lbl, "隐藏左边的的控件")
targetctrl.Visible = True
End If
End If
End Sub
Private Shared Sub splitter_resize(ByVal sender As Object, ByVal e As System.EventArgs)
Dim sl As Splitter = CType(sender, Splitter)
Dim lbl As Label = CType(sl.Controls(0), Label)
lbl.Location = New Point(CInt(-4), CInt(sl.Height / 2 - lbl.Height))
End Sub
End Class
使用时，在窗体的初始化代码中加入如下所示的代码即可：
Public Sub New()
MyBase.New()
'该调用是 Windows 窗体设计器所必需的。
InitializeComponent()
'在 InitializeComponent() 调用之后添加任何初始化
mySplitter.AddShowHideEvent(Me.Splitter1)
End Sub
--------------------编程问答-------------------- 创建一个MySplitter类，在里面加入如下代码即可（注意要修改图片路径，Splitter和lbl的大小）
Public Class MySplitter
'定义一个显示/隐藏树目录的类
'定义一个用于判断树目录当前是否显示的变量
Shared isShow As Boolean
'定义一个添加显示/隐藏树目录的方法
Public Shared Sub addshowhideevent(ByVal sl As Splitter)
Dim lbl As New Label
isShow = False
lbl.AutoSize = False
lbl.Location = New Point(0, 0)
lbl.Size = New Size(20, 20)
lbl.Image = Image.FromFile("图标\\Back.png")
lbl.Cursor = Cursors.Hand
sl.Controls.Add(lbl)
sl.Width = CInt(20)
AddHandler lbl.Click, AddressOf lbl_click
AddHandler sl.Resize, AddressOf splitter_resize
Dim tt As New ToolTip
tt.SetToolTip(lbl, "隐藏树目录")
lbl.Tag = tt
End Sub
'给标签的单击添加事件
Private Shared Sub lbl_click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim lbl As Label = CType(sender, Label)
Dim targetctrl As Control = New Control()
Dim sl As Splitter = CType(lbl.Parent, Splitter)
Dim pctrl As Control = sl.Parent
For Each temp As Control In pctrl.Controls
If Not temp.Equals(sl) Then
If sl.Dock = DockStyle.Left Then
If temp.Dock = DockStyle.Left AndAlso (Not temp.Visible OrElse temp.Left < sl.Left) Then
targetctrl = temp
Exit For
End If
ElseIf sl.Dock = DockStyle.Top Then
If temp.Dock = DockStyle.Top AndAlso (Not temp.Visible OrElse temp.Top < sl.Top) Then
targetctrl = temp
Exit For
End If
End If
End If
Next
If Not targetctrl Is Nothing Then
Dim tt As ToolTip = CType(lbl.Tag, ToolTip)
If isShow = False Then
isShow = True
tt.SetToolTip(lbl, "显示树目录")
lbl.Image = Image.FromFile("图标\\Forward.png")
targetctrl.Visible = False
Else
isShow = False
tt.SetToolTip(lbl, "隐藏树目录")
targetctrl.Visible = True
lbl.Image = Image.FromFile("图标\\Back.png")
End If
End If
End Sub
'给Splitter控件的大小改变时添加事件
Private Shared Sub splitter_resize(ByVal sender As Object, ByVal e As System.EventArgs)
Dim sl As Splitter = CType(sender, Splitter)
Dim lbl As Label = CType(sl.Controls(0), Label)
lbl.Location = New Point(CInt(-4), CInt(sl.Height / 2 - lbl.Height))
End Sub
End Class
//在Form_Load事件中添加调用上面类中方法的代码
MySplitter.addshowhideevent(Me.Splitter1) '调用自定义的方法实现显示/隐藏树目录
MySplitter.addshowhideevent(Me.Splitter2) '调用自定义的方法实现显示/隐藏树目录 --------------------编程问答-------------------- 折叠左边栏：
MySplitContainer.Panel1Collapsed = True
显示左边栏：
MySplitContainer.Panel1Collapsed = False
折叠右边栏：
MySplitContainer.Panel2Collapsed = True
显示右边栏：
MySplitContainer.Panel2Collapsed = False
补充：.NET技术 , VB.NET
