比如用
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
这里面不是要用WMSG常数吗?怎样才能知道用一个API一般有好几个参数,如何知道他要用常数?
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
这里面不是要用WMSG常数吗?怎样才能知道用一个API一般有好几个参数,如何知道他要用常数?
看看CSDN技术中心提供的Windows消息大全 http://dev.csdn.net/article/81/81332.shtm
网上搜一下, 一大堆的.要不你先学VC吧