50.txt

介绍VB里的各种控件的使用方法,窗口控制,图像编程以及OCX等内容,还提供了一个API集供参考.

取得控件绝对Top值   
　           
Public Function AbsoluteTop(ctlContl As Control) As Single
Dim wrkContl As Control
Dim wrkTopPos As Single
'
On Error GoTo AbsoluteTopError
' 初始
Set wrkContl = ctlContl
wrkTopPos = 0
' 循环
Do
If (wrkContl.Container.Name = ctlContl.Parent.Name) Then Exit Do
wrkTopPos = wrkTopPos + wrkContl.Top ' 计算位置
Set wrkContl = wrkContl.Container ' 下个控件
Loop

AbsoluteTop = wrkTopPos + ctlContl.Parent.Top
Exit Function
'
AbsoluteTopError:
AbsoluteTop = ctlContl.Top + ctlContl.Parent.Top
Exit Function
End Function