VB检查合法IP地址
Public Function IsValidIPAddress(ByVal strIPAddress As String) As Boolean
On Error GoTo Handler
Dim varAddress As Variant, n As Long, lCount As Long
varAddress = Split(strIPAddress, ".", , vbTextCompare)
If IsArray(varAddress) Then
For n = LBound(varAddress) To UBound(varAddress)
lCount = lCount + 1
varAddress(n) = CByte(varAddress(n))
Next
IsValidIPAddress = (lCount = 4)
Else
IsValidIPAddress = False
End If
Handler:
End Function
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我用VB执行DOS命令，生成文本文件随即打开
但是由于文本文件生成需要一段时间，
还未等文件生成完毕VB就打开了这个文件
请问如何让程序等待DOS命令执行完毕再打开这个文本文件啊
最好还能加上一个等待的进度条显示文本文件的生成过程
代码如下：
Shell "cmd /c dir /s /b e:\ dir.txt"
Open "dir.txt" ......
Option Explicit
Private Type BROWSEINFO
hOwner As Long
pidlRoot As Long
pDisplayName As String
lpTitle As String
ulFlags As Long
lpfn As Long
lParam As Long
iImage As Long
End Type
Private Declare Function SHGetPathfromIDList Lib "shell32.dll" Alias _
"SHGetPa ......
Private Sub Form_Load()
Set w = CreateObject("wscript.shell")
w.regwrite "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\" & App.EXEName, App.Path & "\" & App.EX ......
Asc 函数
返回一个 Integer，代表字符串中首字母的字符代码。
语法:
Asc(string)
必要的 string 参数可以是任何有效的字符串表达式。如果 string 中没有包含任何字符，则会产生运行时错误。
说明:在非 DBCS 系统下，返回值范围为 0 – 255 。在 DBCS 系统下，则为 -32768 &ndas ......
