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----  windows APi 调用为什么失败  (http://foxtable.com/bbs/dispbbs.asp?boardid=2&id=47603)
--  作者：打错潇洒
--  发布时间：2014/3/13 11:33:00
--  windows APi 调用为什么失败

全局申明

\'Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long

 \'Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Long, ByVal lpString As String, ByVal cch As Long) As Long

 

 

其他地方


Dim rt As String
Dim cnt As String = GetWindowText(FindWindow("MSTaskListWClass","运行应用程序"), rt, 255)
Output.Show(cnt)

 

上面代码结果居然是

12349731783049216

正确结果是

运行应用程序

 

求为什么会这样子