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 



