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Posted on
2008-07-01 13:37
懒人ABC
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Imports System.Drawing
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Imports System.ComponentModel
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![]() Public Class winxpbuttonClass winxpbutton
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Inherits System.Windows.Forms.Button
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Private my_mouseDown As Boolean = False '鼠标按下
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Private my_mouseHover As Boolean = False '鼠标移到上面
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Private m_textcolor As Color = System.Drawing.Color.Black '字体颜色
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<Description("字体颜色。")> _
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![]() Public Property textcolor()Property textcolor() As Color
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Get
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Return m_textcolor
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End Get
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Set(ByVal Value As Color)
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m_textcolor = Value
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Me.Invalidate()
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End Set
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End Property
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![]() Public Sub New()Sub New()
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MyBase.New()
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'该调用是 Windows 窗体设计器所必需的。
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InitializeComponent()
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'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
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'设置控件样式位能够充分地更改控件行为
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Me.SetStyle(ControlStyles.UserPaint, True)
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'关联事件委托
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AddHandler Me.MouseDown, AddressOf my_OnMouseDown
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AddHandler Me.MouseUp, AddressOf my_OnMouseUp
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AddHandler Me.MouseEnter, AddressOf my_OnMouseEnter
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AddHandler Me.MouseLeave, AddressOf my_OnMouseLeave
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Height = 23
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Width = 75
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End Sub
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![]() Protected Overrides Sub OnPaint()Sub OnPaint(ByVal pevent As System.Windows.Forms.PaintEventArgs)
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'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
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pevent.Graphics.FillRectangle(New SolidBrush(Me.Parent.BackColor), pevent.ClipRectangle)
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If (Enabled = False) Then
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'画不可用状态
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DrawDisableButton(pevent.Graphics)
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ElseIf (my_mouseDown) Then '画鼠标按下状态
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DrawMouseDownButton(pevent.Graphics)
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ElseIf (my_mouseHover) Then '画鼠标移动到其上状态
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DrawMouseHoverButton(pevent.Graphics)
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ElseIf (Focused) Then '有焦点,但鼠标未移动到其上
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DrawContainFocusButton(pevent.Graphics)
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Else '一般情况下
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DrawNormalButton(pevent.Graphics)
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End If
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'写文本
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WriteText(pevent.Graphics)
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End Sub
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'鼠标按下的状态处理
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![]() Private Sub my_OnMouseDown()Sub my_OnMouseDown(ByVal sender As Object, ByVal e As MouseEventArgs)
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my_mouseDown = True '鼠标按下
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End Sub
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'鼠标松开状态的处理
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![]() Private Sub my_OnMouseUp()Sub my_OnMouseUp(ByVal sender As Object, ByVal e As MouseEventArgs)
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my_mouseDown = False '鼠标松开
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'重新绘制控件时发生 Paint 事件。PaintEventArgs 指定绘制控件所用的 Graphics
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'以及绘制控件所在的 ClipRectangle。
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Dim pe As PaintEventArgs = New PaintEventArgs(CreateGraphics(), ClientRectangle)
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OnPaint(pe)
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End Sub
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'鼠标进入
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![]() Private Sub my_OnMouseEnter()Sub my_OnMouseEnter(ByVal sender As Object, ByVal e As EventArgs)
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my_mouseHover = True '鼠标移动到其上
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'
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Dim pe As PaintEventArgs = New PaintEventArgs(CreateGraphics(), ClientRectangle)
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OnPaint(pe)
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End Sub
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'鼠标移动开
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![]() Private Sub my_OnMouseLeave()Sub my_OnMouseLeave(ByVal sender As Object, ByVal e As EventArgs)
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my_mouseHover = False '鼠标移动开
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'
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Dim pe As PaintEventArgs = New PaintEventArgs(CreateGraphics(), ClientRectangle)
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OnPaint(pe)
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End Sub
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![]() Private Sub DrawBorder()Sub DrawBorder(ByVal g As Graphics, ByVal state As Integer)
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If (state = 1) Then '绘制一般边框
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'绘制一个画笔,高光点,宽度2
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Dim p As Pen = New Pen(SystemColors.ControlLightLight, 2)
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'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
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g.DrawLine(p, 1, 1, 1, Height - 2) '绘制左侧竖线
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g.DrawLine(p, 1, 1, Width - 2, 1) '绘制上面横线
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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
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g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1) '绘制下面横线
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ElseIf (state = 2) Then '绘制移动到其上的边框
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'与一般边框用高光区别的是显示黄色
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Dim p As Pen = New Pen(Color.Yellow, 2)
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g.DrawLine(p, 1, 1, 1, Height - 2)
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g.DrawLine(p, 1, 1, Width - 2, 1)
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g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2)
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g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1)
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ElseIf (state = 3) Then '绘制按下的显示边框
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'与一般边框用高光区别的是显示暗褐色
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Dim p As Pen = New Pen(SystemColors.ControlDark, 2)
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g.DrawLine(p, 1, 1, 1, Height - 2)
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g.DrawLine(p, 1, 1, Width - 2, 1)
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g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2)
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g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1)
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ElseIf (state = 4) Then '绘制不可用状态边框
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'与一般边框用高光区别的是显示亮色
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Dim p As Pen = New Pen(SystemColors.ControlLight, 2)
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g.DrawLine(p, 1, 1, 1, Height - 2)
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g.DrawLine(p, 1, 1, Width - 2, 1)
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g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2)
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g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1)
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ElseIf (state = 5) Then '绘制有焦点但鼠标不在其上的状态
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'与一般边框用高光区别的是显示兰色
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Dim p As Pen = New Pen(Color.SkyBlue, 2)
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g.DrawLine(p, 1, 1, 1, Height - 2)
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g.DrawLine(p, 1, 1, Width - 2, 1)
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g.DrawLine(p, Width - 1, 2, Width - 1, Height - 2)
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g.DrawLine(p, 2, Height - 1, Width - 2, Height - 1)
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End If
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'//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)
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If (state = 4) Then '不可用时
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'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
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Dim p As Pen = New Pen(Color.FromArgb(161, 161, 146), 1)
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g.DrawLine(p, 0, 2, 0, Height - 3) '左侧竖线(除了两个边角剩下的线)
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g.DrawLine(p, 2, 0, Width - 3, 0) '上面横线(除了两个边角剩下的线)
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g.DrawLine(p, Width - 1, 2, Width - 1, Height - 3) '右侧竖线(除了两个边角剩下的线)
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g.DrawLine(p, 2, Height - 1, Width - 3, Height - 1) '下面的横线
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g.DrawLine(p, 0, 2, 2, 0) '左上角
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g.DrawLine(p, 0, Height - 3, 2, Height - 1) '左下角
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g.DrawLine(p, Width - 3, 0, Width - 1, 2) '右上角
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g.DrawLine(p, Width - 3, Height - 1, Width - 1, Height - 3) '右下角
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Else 'draw normal style border
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'采用默认的黑色进行绘制边角
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g.DrawLine(Pens.Black, 0, 2, 0, Height - 3)
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g.DrawLine(Pens.Black, 2, 0, Width - 3, 0)
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g.DrawLine(Pens.Black, Width - 1, 2, Width - 1, Height - 3)
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g.DrawLine(Pens.Black, 2, Height - 1, Width - 3, Height - 1)
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g.DrawLine(Pens.Black, 0, 2, 2, 0)
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g.DrawLine(Pens.Black, 0, Height - 3, 2, Height - 1)
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g.DrawLine(Pens.Black, Width - 3, 0, Width - 1, 2)
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g.DrawLine(Pens.Black, Width - 3, Height - 1, Width - 1, Height - 3)
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End If
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End Sub
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'一般状态
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![]() Private Sub DrawNormalButton()Sub DrawNormalButton(ByVal g As Graphics)
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'绘制边框,宽度为1
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DrawBorder(g, 1)
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'绘制背景,用高光点颜色
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PaintBack(g, SystemColors.ControlLightLight)
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End Sub
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'鼠标移动到其上的状态
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![]() Private Sub DrawMouseHoverButton()Sub DrawMouseHoverButton(ByVal g As Graphics)
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DrawBorder(g, 2)
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PaintBack(g, SystemColors.ControlLightLight)
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End Sub
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![]() Private Sub DrawMouseDownButton()Sub DrawMouseDownButton(ByVal g As Graphics)
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DrawBorder(g, 3)
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'绘制背景,用三维元素的亮色
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PaintBack(g, SystemColors.ControlLight)
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End Sub
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![]() Private Sub DrawDisableButton()Sub DrawDisableButton(ByVal g As Graphics)
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DrawBorder(g, 4)
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'亮色
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PaintBack(g, SystemColors.ControlLight)
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End Sub
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![]() Private Sub DrawContainFocusButton()Sub DrawContainFocusButton(ByVal g As Graphics)
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DrawBorder(g, 5)
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'高光点
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PaintBack(g, SystemColors.ControlLightLight)
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End Sub
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'绘制背景色
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![]() Private Sub PaintBack()Sub PaintBack(ByVal g As Graphics, ByVal c As Color)
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'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
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g.FillRectangle(New SolidBrush(c), 3, 3, Width - 6, Height - 6)
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End Sub
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'写文本
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![]() Private Sub WriteText()Sub WriteText(ByVal g As Graphics)
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'计算文本的位置
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Dim x As Integer = 0
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Dim y As Integer = 0
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'size用宽高有序对表示矩形区域
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Dim s As Size = g.MeasureString(Text, Font).ToSize()
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x = (Width - s.Width) / 2 '文字相对控件x偏移
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y = (Height - s.Height) / 2 '文字相对控件y偏移
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'写文本
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If (Enabled) Then '如果控件可用,则黑色文字
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'g.DrawString(Text, Font, Brushes.Black, x, y)
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Dim b As New SolidBrush(m_textcolor)
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g.DrawString(Text, Font, b, x, y)
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Else '如果控件不可用,则灰色文字
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g.DrawString(Text, Font, Brushes.Gray, x, y)
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End If
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End Sub
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End Class
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