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对于在VB.NET如何制作图片按钮效果讲解

2012-07-13 08:50 471 查看
VB.NET是目前应用比较广泛的编程语言。它在文件处理,移动设备操作,图形界面的处理方面都能够体现强大的作用。那么今天我们就一起学习一个其中的应用技巧,VB.NET制作图片按钮的实际操作方法。

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

<System.Diagnostics.DebuggerStepThrough()> 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

<Description("picturebox图片。")> _

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.Click

RaiseEvent 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.Resize

RedrawControls()

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

VB.NET制作图片按钮的相关实现方法就为大家介绍到这里。B.NET制作图片按钮的相关实现方法就为大家介绍到这里。
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