我在这里设计了一个圆圈:
Private Sub HeatmapBande_Paint(sender As Object, e As ystem.Windows.Forms.PaintEventArgs) Handles Me.Paint
'draw a circle here
End Sub
圆圈有一个半径(rayonZoneElectrodeEnCases):
Public Property ProRayonZoneElectrodeEnCases() As Integer
Get
Return rayonZoneElectrodeEnCases
End Get
Set(value As Integer)
rayonZoneElectrodeEnCases = value
'reapint but how?????
End Set
End Property
我需要的是:当我们调用Property来改变半径时:MyClass.ProRayonZoneElectrodeEnCases = 10,圆圈将被重新绘制
我不知道该怎么做,你能帮助我吗?
事先提前答案 0 :(得分:1)
如果使用Form的paint事件来执行绘图,则将Me.Invalidate()
添加到属性的set方法
Public Property ProRayonZoneElectrodeEnCases() As Integer
Get
Return rayonZoneElectrodeEnCases
End Get
Set(value As Integer)
rayonZoneElectrodeEnCases = value
Me.Invalidate()
End Set
End Property
这会强制表单刷新自己。 见这里:http://msdn.microsoft.com/en-us/library/system.windows.forms.control.invalidate%28v=vs.100%29.aspx