Dim ifdrag As BooleanPrivate Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single) ifdrag = True End SubPrivate Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single) If ifdrag Then Command1.Left = X - 100 Command1.Top = Y - 100 End If End SubPrivate Sub Form_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single) ifdrag = False End Sub
我求圆是这样写的:If downtrue = True ThenDim a, s As Long a = Abs(X - 870) '圆心坐标为(870,870) s = a * a If s >= 360000 Then '半径600 Exit Sub Else If Y < 870 Then Image4.Left = X Image4.Top = 1800 - Sqr(360000 - s)Else Image4.Left = X Image4.Top = 1800 + Sqr(360000 - s)End If End If End If
ifdrag = True
End SubPrivate Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
If ifdrag Then
Command1.Left = X - 100
Command1.Top = Y - 100
End If
End SubPrivate Sub Form_MouseUp(Button As Integer, Shift As Integer, X As Single, Y As Single)
ifdrag = False
End Sub
a = Abs(X - 870) '圆心坐标为(870,870)
s = a * a
If s >= 360000 Then '半径600
Exit Sub
Else
If Y < 870 Then
Image4.Left = X
Image4.Top = 1800 - Sqr(360000 - s)Else
Image4.Left = X
Image4.Top = 1800 + Sqr(360000 - s)End If
End If
End If