form1.frm

很好的教程原代码！

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "获取系统所在目录"
      Height          =   615
      Left            =   1320
      TabIndex        =   1
      Top             =   1800
      Width           =   2055
   End
   Begin VB.CommandButton Command1 
      Caption         =   "获取Windows安装目录"
      Height          =   735
      Left            =   1320
      TabIndex        =   0
      Top             =   960
      Width           =   2055
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
' GetWindowsDirectory函数声明
Private Declare Function GetWindowsDirectory Lib "kernel32" Alias "GetWindowsDirectoryA" _
(ByVal lpBuffer As String, _
ByVal nSize As Long _
) As Long
' GetSystemDirectory函数声明
Private Declare Function GetSystemDirectory Lib "kernel32" Alias "GetSystemDirectoryA" _
(ByVal lpBuffer As String, _
ByVal nSize As Long _
) As Long
Dim S As String * 80
Dim Length As Long
Dim WinPath As String
Dim SysPath As String
Private Sub Command1_Click()
MsgBox ("Windows安装目录是：" + WinPath)
End Sub

Private Sub Command2_Click()
MsgBox ("系统所在目录是：" + SysPath)
End Sub

' 获取Windows目录和系统目录的程序代码
Private Sub Form_Load()

Length = GetWindowsDirectory(S, Len(S))
WinPath = Left(S, Length)
Length = GetSystemDirectory(S, Len(S))
SysPath = Left(S, Length)
End Sub