VB.NET中怎么制作一个图片按钮
VB.NET中怎么制作一个图片按钮,相信很多没有经验的人对此束手无策,为此本文总结了问题出现的原因和解决方法,通过这篇文章希望你能解决这个问题。
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VB.NET制作图片按钮思路:很简单,就是在一个picturebox控件上放置一个button控件,然后将这个button添加进picturebox上(确保先拖拽picturebox,后拖拽button),设置这个button的背景色(这个时候是相对于picturebox)为透明。
Imports System.ComponentModel Public Class picturebutton Inherits System.Windows.Forms.UserControl #Region " Windows 窗体设计器生成的代码 " 'UserControl 重写 dispose 以清理组件列表。 Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub 'Windows 窗体设计器所必需的 Private components As System.ComponentModel.IContainer
注意:以下VB.NET制作图片按钮的过程是 Windows 窗体设计器所必需的
可以使用 Windows 窗体设计器修改此过程。
不要使用代码编辑器修改它。
Friend WithEvents PictureBox1 As System.Windows.Forms.PictureBox
Friend WithEvents Button1 As System.Windows.Forms.Button
Private Sub InitializeComponent()Me.PictureBox1 = New System.Windows.Forms.PictureBox()
Me.Button1 = New System.Windows.Forms.Button()
Me.SuspendLayout()
'PictureBox1
Me.PictureBox1.Name = "PictureBox1"
Me.PictureBox1.Size = New System.Drawing.Size(136, 40)
Me.PictureBox1.TabIndex = 0
Me.PictureBox1.TabStop = False
'Button1
Me.Button1.Name = "Button1"
Me.Button1.TabIndex = 1
Me.Button1.Text = "Button1"
'picturebutton
Me.Controls.AddRange(New System.Windows.Forms.Control()
{Me.Button1, Me.PictureBox1})Me.Name = "picturebutton"
Me.ResumeLayout(False)
End Sub
#End Region
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 Me.Button1.Width = 100 ‘设置按钮的初始大小 Me.Button1.Height = 23 Me.Button1.BackColor = Color.Transparent ‘背景色透明 Me.Button1.ForeColor = Color.Black Me.PictureBox1.Controls.Add(Me.Button1) End Sub Private m_text As String ‘设置按钮标题 Private a As Integer 'Private m_image As Image_ Public Property image() As image Get Return Me.PictureBox1.Image End Get Set(ByVal Value As image) Me.PictureBox1.Image = Value Invalidate() End Set End Property Shadows Property forecolor() As Color Get Return Me.Button1.ForeColor End Get Set(ByVal Value As Color) Me.Button1.ForeColor = Value Invalidate() End Set End Property Shadows Sub ResetForeColor() Me.Button1.ForeColor = SystemColors.ControlText End Sub
VB.NET制作图片按钮的单击事件
Event BtnClick(ByVal sender As Object, ByVal e As System.EventArgs)
Private Sub Button1_Click(ByVal sender As Object,
ByVal e As System.EventArgs) Handles Button1.ClickRaiseEvent BtnClick(Me, e)
End Sub
控件改变大小时,需重绘控件,以使子控件排位美观
Private Sub FileTextBox_Resize(ByVal sender As Object,
ByVal e As System.EventArgs) Handles MyBase.ResizeRedrawControls()
End Sub
子控件会自动继续容器的Font属性,所以改变容器的Font属性时也要重绘控件
Protected Overrides Sub OnFontChanged(ByVal e As System.EventArgs) '让基控件更新文本框 MyBase.OnFontChanged(e) '重绘控件 RedrawControls() End Sub '重绘控件 Private Sub RedrawControls() '控件宽度 Dim width As Integer = Me.ClientRectangle.Width '获得工作区宽
以VB.NET制作图片按钮的高度来确定控件高度
Dim btnSide As Integer = Button1.Height Dim btnwidth As Integer = Button1.Width If Me.ClientRectangle.Height <> btnSide Then
设置控件工作区的大小
'Me.SetClientSizeCore(btnwidth, btnSide)
Me.SetClientSizeCore(width, btnSide)
'这里使用工作区的宽是因为:按钮和picturebox可以调整宽度
'上面的语句激发了嵌套的Resize事件,因此需要立即退出,
如果不退出,就会反复调用进入死循环Exit Sub
End If
调整子控件的大小
'Txt.SetBounds(0, 0, width, btnSide)
'Btn.SetBounds(width - 19, 2, 17, btnSide - 4)
Me.PictureBox1.SetBounds(0, 0, width, btnSide)
Me.PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
Me.Button1.SetBounds(0, 0, width, btnSide)
End Sub
End Class
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本文标题:VB.NET中怎么制作一个图片按钮
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