📄 6.11.frm
字号:
VERSION 5.00
Begin VB.Form Form1
Caption = "Form1"
ClientHeight = 5550
ClientLeft = 60
ClientTop = 390
ClientWidth = 7230
LinkTopic = "Form1"
ScaleHeight = 5550
ScaleWidth = 7230
StartUpPosition = 3 '窗口缺省
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Form_Paint()
Dim r As Single, initR As Single
Dim x As Single, y As Single, qbc As Integer
Cls '清屏
x = ScaleWidth / 2: y = ScaleHeight / 2 '圆心位于窗体中央
If x < y Then initR = x Else initR = y
'取圆心坐标的小值作为半径
FillStyle = 0 '填充图形区域
For r = initR To 1 Step -(initR / 16)
FillColor = QBColor(qbc) '使用默认的颜色,绘制同心圆
qbc = qbc + 1
Circle (x, y), r
Next
FillStyle = 1 '还原填充模式
End Sub
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