在VB中声明API函数

[addishu]

你好
在VB中调用API函数
Public Declare Function OpenDriver Lib "winmm.dll" _
(ByVal szDriverName As String, ByVal szSectionName As String, ByVal lParam2 As Long) As Long

vc中原型HDRVR OpenDriver(LPCWSTR lpDriverName,LPCWSTR lpSectionName, LONG lParam);

怎样把VC中语句OpenDriver(L"av8api.dll", NULL, NULL);转化成VB的书写格式？
顺便问一下，L"av8api,dll"的L有什么作用？

[Un1]

VB:

Public Declare Function OpenDriver Lib "winmm.dll" _
(ByVal szDriverName As String,szSectionName As Any, ByVal lParam2 As Long) As Long


Dim l As Long
l = OpenDriver("sdfsdf",byval 0,0)

因为编译器自动进行Unicode转换。

[lowhand]

赞成Un1的观点.
Api函数都是由C语言写的,使用时只管他要求的接口函数的参数类型就可以了,而不必去管他的原型中是如何实现的

[y1g1y1]

http://www.csdn.net/expert/TopicView.asp?id=74205

http://www.csdn.net/cnshare/soft/soft5806.shtm