下面程序是由鼠标事件在窗体上画图，如果按下鼠标将可以画图，双击窗体可以清除所画图形。补充完整下面的程序。 首先在窗体层定义如下变量： Dim PaintStart As Boolean 编写如下事件过程： Private Sub Form_Load ( ) DrawWidth = 2 ForeColor = vbGreen End Sub Private Sub Form_MouseDown(Button As Integer, Shift As Integer, _X As Single, Y As Single) PaintStart = True End Sub Private Sub Form_MouseMove(Button As Integer, Shift As Integer, _X As Single, Y As Single) If PaintStart ThenPSet (X, Y) End If End Sub Private Sub Form_MouseUp (Button As Integer, Shift As Integer, _ X As Single, Y As Single) 【14】 End Sub Private Sub Form_DblClick( ) Cls End Sub
