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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 ‘////////////////////////////////////闵峰
‘////////////////////////////////////闵峰
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