在VB的picture控件里面画了1000来个圆，做颜色渐变，时间间隔30ms，是不是每次都要重新新画圆，如何才能不需要从新画圆，直接填充颜色，时间快点
Private Sub Form_Load()
Dim r, x0, y0 As Long
r = 10
For x0 = 100 To 10000 Step 30
For y0 = 100 To 10000 Step 30
Picture1.Circle (x0, y0), r, vbBlue

Picture1.FillStyle = vbFSSolid
    Picture1.FillColor = vbRed
Next y0
Next x0
End Sub