Imports System.Drawing 
Imports System.ComponentModel 
Public Class winxpbutton 
    Inherits System.Windows.Forms.Button 
    Private my_mouseDown As Boolean = False '鼠标按下 
    Private my_mouseHover As Boolean = False '鼠标移到上面 
    Private m_textcolor As Color = System.Drawing.Color.Black '字体颜色 
    <Description("字体颜色。")> _ 
    Public Property textcolor() As Color 
        Get 
            Return m_textcolor 
        End Get 
        Set(ByVal Value As Color) 
            m_textcolor = Value 
            Me.Invalidate() 
        End Set 
    End Property 
    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,true表示将指定的样式应用到控件 
        '设置控件样式位能够充分地更改控件行为 
        Me.SetStyle(ControlStyles.UserPaint, True) 
        '关联事件委托 
        AddHandler Me.MouseDown, AddressOf my_OnMouseDown 
        AddHandler Me.MouseUp, AddressOf my_OnMouseUp 
        AddHandler Me.MouseEnter, AddressOf my_OnMouseEnter 
       
        AddHandler Me.MouseLeave, AddressOf my_OnMouseLeave 
        Height = 23         
Width = 75 
    End Sub 
    Protected Overrides Sub OnPaint(ByVal pevent As System.Windows.Forms.PaintEventArgs) 
        'pevent.ClipRectangle指在其中绘制的矩形,即使用父控件的背景色来画这个矩形按钮 
        pevent.Graphics.FillRectangle(New SolidBrush(Me.Parent.BackColor), pevent.ClipRectangle) 
        If (Enabled = False) Then 
            '画不可用状态 
            DrawDisableButton(pevent.Graphics) 
        ElseIf (my_mouseDown) Then '画鼠标按下状态 
            DrawMouseDownButton(pevent.Graphics) 
        ElseIf (my_mouseHover) Then '画鼠标移动到其上状态 
            DrawMouseHoverButton(pevent.Graphics) 
        ElseIf (Focused) Then '有焦点,但鼠标未移动到其上 
            DrawContainFocusButton(pevent.Graphics) 
        Else '一般情况下 
            DrawNormalButton(pevent.Graphics) 
        End If 
        '写文本 
        WriteText(pevent.Graphics) 
    End Sub 
    '鼠标按下的状态处理 
    Private Sub my_OnMouseDown(ByVal sender As Object, ByVal e As MouseEventArgs) 
        my_mouseDown = True '鼠标按下 
    End Sub 
    '鼠标松开状态的处理 
    Private Sub my_OnMouseUp(ByVal sender As Object, ByVal e As MouseEventArgs) 
        my_mouseDown = False '鼠标松开 
        '重新绘制控件时发生 Paint 事件。PaintEventArgs 指定绘制控件所用的 Graphics 
        '以及绘制控件所在的 ClipRectangle。 
        Dim pe As PaintEventArgs = New PaintEventArgs(CreateGraphics(), ClientRectangle) 
        OnPaint(pe) 
    End Sub 
    '鼠标进入 
    Private Sub my_OnMouseEnter(ByVal sender As Object, ByVal e As EventArgs) 
        my_mouseHover = True '鼠标移动到其上 
        ' 
        Dim pe As PaintEventArgs = New PaintEventArgs(CreateGraphics(), ClientRectangle) 
        OnPaint(pe) 
    End Sub 
    '鼠标移动开 
    Private Sub my_OnMouseLeave(ByVal sender As Object, ByVal e As EventArgs) 
        my_mouseHover = False '鼠标移动开 
        ' 
        Dim pe As PaintEventArgs = New PaintEventArgs(CreateGraphics(), ClientRectangle) 
        OnPaint(pe) 
    End Sub 
    Private Sub DrawBorder(ByVal g As Graphics, ByVal state As Integer) 
        If (state = 1) Then '绘制一般边框 
            '绘制一个画笔,高光点,宽度2 
            Dim p As Pen = New Pen(SystemColors.ControlLightLight, 2) 
            'g.DrawLine画线,p是画笔,后面是第一个点的坐标,第二个点的坐标 
            g.DrawLine(p, 1, 1, 1, Height - 2) '绘制左侧竖线 
            g.DrawLine(p, 1, 1, Width - 2, 1) '绘制上面横线 
            g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2) '绘制右侧竖线,由于已经在上面绘制了横线(纵坐标为1),所以从2开始 
            g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1) '绘制下面横线 
        ElseIf (state = 2) Then '绘制移动到其上的边框 
            '与一般边框用高光区别的是显示黄色 
            Dim p As Pen = New Pen(Color.Yellow, 2) 
            g.DrawLine(p, 1, 1, 1, Height - 2) 
            g.DrawLine(p, 1, 1, Width - 2, 1) 
            g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2) 
            g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1) 
        ElseIf (state = 3) Then '绘制按下的显示边框 
            '与一般边框用高光区别的是显示暗褐色 
            Dim p As Pen = New Pen(SystemColors.ControlDark, 2) 
            g.DrawLine(p, 1, 1, 1, Height - 2) 
            g.DrawLine(p, 1, 1, Width - 2, 1) 
            g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2) 
            g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1) 
        ElseIf (state = 4) Then '绘制不可用状态边框 
            '与一般边框用高光区别的是显示亮色 
            Dim p As Pen = New Pen(SystemColors.ControlLight, 2) 
            g.DrawLine(p, 1, 1, 1, Height - 2) 
            g.DrawLine(p, 1, 1, Width - 2, 1) 
            g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2) 
            g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1) 
        ElseIf (state = 5) Then '绘制有焦点但鼠标不在其上的状态 
            '与一般边框用高光区别的是显示兰色 
            Dim p As Pen = New Pen(Color.SkyBlue, 2) 
            g.DrawLine(p, 1, 1, 1, Height - 2) 
            g.DrawLine(p, 1, 1, Width - 2, 1) 
            g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2) 
            g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1) 
        End If 
        '//做完如上的处理后再对可用和不可用做圆化边缘处理(也就是把按钮的4个角进行圆化处理) 
        If (state = 4) Then '不可用时 
            '使用画笔,Color.FromArgb(161, 161, 146)是从一个32位的ARGB值创建系统颜色,宽度为1 
            Dim p As Pen = New Pen(Color.FromArgb(161, 161, 146), 1) 
            g.DrawLine(p, 0, 2, 0, Height - 3) '左侧竖线(除了两个边角剩下的线) 
            g.DrawLine(p, 2, 0, Width - 3, 0) '上面横线(除了两个边角剩下的线) 
            g.DrawLine(p, Width - 1, 2, Width - 1, Height - 3) '右侧竖线(除了两个边角剩下的线) 
            g.DrawLine(p, 2, Height - 1, Width - 3, Height - 1) '下面的横线 
            g.DrawLine(p, 0, 2, 2, 0) '左上角 
            g.DrawLine(p, 0, Height - 3, 2, Height - 1) '左下角 
            g.DrawLine(p, Width - 3, 0, Width - 1, 2) '右上角 
            g.DrawLine(p, Width - 3, Height - 1, Width - 1, Height - 3) '右下角 
        Else 'draw normal style border 
            '采用默认的黑色进行绘制边角 
            g.DrawLine(Pens.Black, 0, 2, 0, Height - 3) 
            g.DrawLine(Pens.Black, 2, 0, Width - 3, 0) 
            g.DrawLine(Pens.Black, Width - 1, 2, Width - 1, Height - 3) 
            g.DrawLine(Pens.Black, 2, Height - 1, Width - 3, Height - 1) 
            g.DrawLine(Pens.Black, 0, 2, 2, 0) 
            g.DrawLine(Pens.Black, 0, Height - 3, 2, Height - 1) 
            g.DrawLine(Pens.Black, Width - 3, 0, Width - 1, 2) 
            g.DrawLine(Pens.Black, Width - 3, Height - 1, Width - 1, Height - 3) 
        End If 
    End Sub 
    '一般状态 
    Private Sub DrawNormalButton(ByVal g As Graphics) 
        '绘制边框,宽度为1 
        DrawBorder(g, 1) 
        '绘制背景,用高光点颜色 
        PaintBack(g, SystemColors.ControlLightLight) 
    End Sub 
    '鼠标移动到其上的状态 
    Private Sub DrawMouseHoverButton(ByVal g As Graphics) 
        DrawBorder(g, 2) 
        PaintBack(g, SystemColors.ControlLightLight) 
    End Sub 
    Private Sub DrawMouseDownButton(ByVal g As Graphics) 
        DrawBorder(g, 3) 
        '绘制背景,用三维元素的亮色 
        PaintBack(g, SystemColors.ControlLight) 
    End Sub 
    Private Sub DrawDisableButton(ByVal g As Graphics) 
        DrawBorder(g, 4) 
        '亮色 
        PaintBack(g, SystemColors.ControlLight) 
    End Sub 
    Private Sub DrawContainFocusButton(ByVal g As Graphics) 
        DrawBorder(g, 5) 
        '高光点 
        PaintBack(g, SystemColors.ControlLightLight) 
    End Sub 
    '绘制背景色 
    Private Sub PaintBack(ByVal g As Graphics, ByVal c As Color) 
        '填充时采用:单色画刷,相对与(0,0)坐标(3,3)的位置,大小为宽-6,高-6 
        g.FillRectangle(New SolidBrush(c), 3, 3, Width - 6, Height - 6) 
    End Sub 
    '写文本 
    Private Sub WriteText(ByVal g As Graphics) 
        '计算文本的位置 
        Dim x As Integer = 0 
        Dim y As Integer = 0 
        'size用宽高有序对表示矩形区域 
        Dim s As Size = g.MeasureString(Text, Font).ToSize() 
        x = (Width - s.Width) / 2 '文字相对控件x偏移 
        y = (Height - s.Height) / 2 '文字相对控件y偏移 
        '写文本 
        If (Enabled) Then '如果控件可用,则黑色文字 
            'g.DrawString(Text, Font, Brushes.Black, x, y) 
            Dim b As New SolidBrush(m_textcolor) 
            g.DrawString(Text, Font, b, x, y) 
        Else '如果控件不可用,则灰色文字 
            g.DrawString(Text, Font, Brushes.Gray, x, y) 
        End If 
    End Sub 
End Class