如果你看腻了VB的中规中矩的按钮,有时想改变一下的话,本文或许对你有所启发。以下二例用Line方法结合其它手段,在窗体上绘制出别具一格的“按钮”,呵呵,还是有那么一点儿新意的(怎么象是吹牛?)。建议在不需要太多的按钮的窗体中使用。
例一:用Line方法制作初始时为平面、鼠标移到时突出的按钮,此类按钮其实更象是第一层菜单,可为之通过Form_MouseDown或者Form_MouseUp编写类似于Click的事件。当然了,用标签+线条或者+ImageBox来实现更简单些。
Private Sub Form_Load()
Me.AutoRedraw = True CurrentX = 280: CurrentY = 150 Me.Print "Exit" Me.Caption = "请将鼠标移近文字观察效果" End Sub
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single) If Button = 1 Then If X <= 900 And X >= 100 And Y <= 500 And Y >= 100 Then End End If End If End Sub
Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If X <= 900 And X >= 100 And Y <= 500 And Y >= 100 Then Me.Caption = "左键单击按钮退出程序" Line (100, 100)-(100, 400), vbWhite Line (100, 100)-(800, 100), vbWhite Line (100, 400)-(800, 400), vbBlack Line (800, 100)-(800, 425), vbBlack '多出25是为了让右下角更封闭 Me.ForeColor = vbBlue CurrentX = 280: CurrentY = 150 Me.Print "Exit" Else Me.Cls CurrentX = 280: CurrentY = 150 Me.ForeColor = vbBlack Me.Print "Exit" Me.Caption = "请将鼠标移近文字观察效果" End If
End Sub
例二:用Line方法结合PictureBox(作按钮容器用)制作有立体感的按钮,很Cool哟。要试用本例,请在窗体上缺省绘制一个1000*700的PictureBox控件。
Private Sub Form_Load()
Dim k As Integer Picture1.AutoRedraw = True Me.AutoRedraw = True
'绘制出灰度的效果 For k = 0 To 20 Rect Picture1, 5 * k, 5 * k, Picture1.ScaleWidth - 10 * k, Picture1.ScaleHeight - 10 * k, RGB(255 - 5 * k, 255 - 5 * k, 255 - 5 * k) Next k
Picture1.CurrentX = 250: Picture1.CurrentY = 250 Picture1.Print "Hello"
End Sub
'绘制矩形 Sub Rect(obj As Object, X As Integer, Y As Integer, iW As Integer, iH As Integer, iC As Long) obj.Line (X, Y)-(X + iW, Y), iC obj.Line -Step(0, iH), iC obj.Line -Step(-iW, 0), iC obj.Line -Step(0, -iH), iC End Sub
'鼠标在窗体移动时按钮保持灰度的原貌 Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) For k = 0 To 20 Rect Picture1, 5 * k, 5 * k, Picture1.ScaleWidth - 10 * k, Picture1.ScaleHeight - 10 * k, RGB(255 - 5 * k, 255 - 5 * k, 255 - 5 * k) Picture1.ForeColor = vbBlack Picture1.CurrentX = 250: Picture1.CurrentY = 250 Picture1.FontBold = False Picture1.Print "Hello" Next k End Sub
'鼠标移动到图片框时按钮形状发生变化:底色为深色,按钮周边带色彩边框,文字变色 Private Sub Picture1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) Dim k As Integer For k = 0 To 20 Rect Picture1, 5 * k, 5 * k, Picture1.ScaleWidth - 10 * k, Picture1.ScaleHeight - 10 * k, RGB(8 * k, 12 * k, 8 * k) Picture1.ForeColor = vbRed Picture1.CurrentX = 250: Picture1.CurrentY = 250 Picture1.Print "Hello" Next End Sub  
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