刚刚在学API函数..感觉挺好玩的...

但开始摸不到头绪了..

比如:

ExitWindowsEx

这个只是解释说明该函数的作用而已..并没有谈及到该函数的用法及书写格式...

其他的也是一样...我都有点郁闷了..

哪位大虾指点一下小弟...

参数列表已经很明确的告诉你怎么用了，那些常数比如EWX_SHUTDOWN之类的，都可以在ＡＰＩ浏览器中查找到，定义一下就是了,API函数和你自己定义的函数一样，你怎么用你自己定义的函数就怎么用ＡＰＩ函数就是了，只不过多一步声明而矣

[此贴子已经被作者于2007-3-4 9:31:48编辑过]

参数列是很明确...

我就是不懂把他们怎么组合起来.然后应用到程序中啊..

比如这个吧:
GetVolumeInformation(drive_chr, strlabel, Len(strlabel), serial_no, 0, 0, strtype, Len(strtype))

格式是怎么组成的啊..

Declare Function GetVolumeInformation Lib "kernel32" Alias "GetVolumeInformationA" (ByVal lpRootPathName As String, ByVal lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Long, lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, ByVal nFileSystemNameSize As Long) As Long

(ByVal lpRootPathName As String, ByVal lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Long, lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, ByVal nFileSystemNameSize As Long) 这是参数列表

GetVolumeInformation(drive_chr, strlabel, Len(strlabel), serial_no, 0, 0, strtype, Len(strtype))这里面的每一个参数对应上面API函数的一个参数,并用类型要一致

比如: drive_chr------>lpRootPathName Len(strtype)----->nFileSystemNameSize

drive_chr肯定是一个变量为String型,这些都是函数方面的最基本的知识

书写格式怎么定义啊?就像MSGBOX函数...他也是有书写格式:MsgBox(prompt[, buttons] [, title] [, helpfile, context])

API函数呢?

一样的,只不过MSGBOX函数参数可选,而API函数参数不可选而矣,一定要全部俱备

我就是不会写他们的格式啊....他们怎么组合的?

谢谢你拉...教我这么多..

这就是正规的格式

GetVolumeInformation (ByVal lpRootPathName As String, ByVal lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Long, lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, ByVal nFileSystemNameSize As Long)

MsgBox(prompt[, buttons] [, title] [, helpfile, context])这个改写成正规格式就是下面的

msgbox(byval prompt as string [,byval buttons as long] ......) []内是参数可选,()内的参数必选