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VB.NET中製作圖片按鈕
作者:未知
日期:2005-03-17
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投稿:snow(轉貼)
來源:未知
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以下正文:
圖片按鈕:

思路:很簡單,就是在一個picturebox控件上放置一個button控件,然後將這個button添加進picturebox上(確保先拖拽picturebox,後拖拽button),設置這個button的背景色(這個時候是相對於picturebox)為透明。







Imports System.ComponentModel



Public Class picturebutton



Inherits System.Windows.Forms.UserControl







#Region " Windows 窗體設計器生成的代碼 "















'UserControl 重寫 dispose 以清理組件列表。



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 窗體設計器所必需的



Private components As System.ComponentModel.IContainer







'注意:以下過程是 Windows 窗體設計器所必需的



'可以使用 Windows 窗體設計器修改此過程。



'不要使用代碼編輯器修改它。



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()







'該調用是 Windows 窗體設計器所必需的。



InitializeComponent()







'在 InitializeComponent() 調用之後添加任何初始化



Me.Button1.Width = 100 『設置按鈕的初始大小



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 『設置按鈕標題



Private a As Integer







'Private m_image As Image



<Description("picturebox圖片。")> _



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



'////



'按鈕的單擊事件



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



'////







'控件改變大小時,需重繪控件,以使子控件排位美觀



Private Sub FileTextBox_Resize(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Resize



RedrawControls()



End Sub







'子控件會自動繼續容器的Font屬性,所以改變容器的Font屬性時也要重繪控件



Protected Overrides Sub OnFontChanged(ByVal e As System.EventArgs)



'讓基控件更新文本框



MyBase.OnFontChanged(e)



'重繪控件



RedrawControls()



End Sub







'重繪控件



Private Sub RedrawControls()



'控件寬度



Dim width As Integer = Me.ClientRectangle.Width '獲得工作區寬



'以按鈕的高度來確定控件高度



Dim btnSide As Integer = Button1.Height



Dim btnwidth As Integer = Button1.Width



If Me.ClientRectangle.Height <> btnSide Then



'設置控件工作區的大小



'Me.SetClientSizeCore(btnwidth, btnSide)



Me.SetClientSizeCore(width, btnSide) '這裡使用工作區的寬是因為:按鈕和picturebox可以調整寬度



'上面的語句激發了嵌套的Resize事件,因此需要立即退出,如果不退出,就會反覆調用進入死循環



Exit Sub



End If







'調整子控件的大小



'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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