VB 创建可等待进程并获取Stdout输出的代码

Attribute VB_Name = "Run_Command"


Option Explicit


Option Base 0
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Private Declare Function CreateProcess()Function CreateProcess Lib "kernel32" Alias "CreateProcessA" (ByVal lpApplicationName As String, _


ByVal lpCommandLine As String, lpProcessAttributes As SECURITY_ATTRIBUTES, lpThreadAttributes As SECURITY_ATTRIBUTES, _


ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, lpEnvironment As Any, ByVal lpCurrentDirectory As String, _


lpStartupInfo As STARTUPINFO, lpProcessInformation As PROCESS_INFORMATION) As Long




Private Declare Function CloseHandle()Function CloseHandle Lib "kernel32.dll" (ByVal hObject As Long) As Long




Private Declare Function ReadFile()Function ReadFile Lib "kernel32" (ByVal hFile As Long, lpBuffer As Any, ByVal nNumberOfBytesToRead As Long, lpNumberOfBytesRead As Long, lpOverlapped As Long) As Long




Private Declare Function WaitForSingleObject()Function WaitForSingleObject Lib "kernel32" (ByVal hHandle As Long, ByVal dwMilliseconds As Long) As Long




Private Declare Function CreatePipe()Function CreatePipe Lib "kernel32" (phReadPipe As Long, phWritePipe As Long, lpPipeAttributes As SECURITY_ATTRIBUTES, ByVal nSize As Long) As Long


Private Type STARTUPINFO


cb As Long


lpReserved As String


lpDesktop As String


lpTitle As String


dwX As Long


dwY As Long


dwXSize As Long


dwYSize As Long


dwXCountChars As Long


dwYCountChars As Long


dwFillAttribute As Long


dwFlags As Long


wShowWindow As Integer


cbReserved2 As Integer


lpReserved2 As Long


hStdInput As Long


hStdOutput As Long


hStdError As Long


End Type


Private Type PROCESS_INFORMATION


hProcess As Long


hThread As Long


dwProcessId As Long


dwThreadId As Long


End Type


Private Type SECURITY_ATTRIBUTES


nLength As Long


lpSecurityDescriptor As Long


bInheritHandle As Long


End Type


Private Const NORMAL_PRIORITY_CLASS As Long = &H20&


Private Const STARTF_USESTDHANDLES As Long = &H100&


Private Const STARTF_USESHOWWINDOW As Long = &H1&


Private Const SW_HIDE As Long = 0&


Private Const SW_NORMAL As Long = 1


Private Const INFINITE As Long = &HFFFF&






Public Function GetStrFromCommand()Function GetStrFromCommand(CommandLine As String) As String


On Error Resume Next


Dim si As STARTUPINFO 'used to send info the CreateProcess


Dim pi As PROCESS_INFORMATION 'used to receive info about the created process


Dim retval As Long 'return value


Dim hRead As Long 'the handle to the read end of the pipe


Dim hWrite As Long 'the handle to the write end of the pipe


Dim sBuffer(4096) As Byte 'the buffer to store data as we read it from the pipe


Dim lgSize As Long 'returned number of bytes read by readfile


Dim sa As SECURITY_ATTRIBUTES


Dim strResult As String 'returned results of the command line


With sa


.nLength = Len(sa)


.bInheritHandle = 1& 'inherit, needed for this to work


.lpSecurityDescriptor = 0&


End With


retval = CreatePipe(hRead, hWrite, sa, 0&)


With si


.cb = Len(si)


.dwFlags = STARTF_USESTDHANDLES Or STARTF_USESHOWWINDOW 'tell it to use (not ignore) the values below


.wShowWindow = SW_HIDE


.hStdOutput = hWrite 'pass the write end of the pipe as the processes standard output


End With


retval = CreateProcess(vbNullString, CommandLine & vbNullChar, sa, sa, 1&, NORMAL_PRIORITY_CLASS, ByVal 0&, vbNullString, si, pi)


CloseHandle hWrite


'WaitForSingleObject pi.hProcess, INFINITE


Do While 0 <> ReadFile(hRead, sBuffer(0), 4096, lgSize, ByVal 0&)


strResult = strResult & Left$(sBuffer(), lgSize)


Erase sBuffer()


DoEvents


Loop


CloseHandle pi.hProcess


CloseHandle pi.hThread


CloseHandle hRead




GetStrFromCommand = StrConv(strResult, vbUnicode)


End Function






Public Function RunCommand()Function RunCommand(ByVal CommandLine As String, ByVal WaitForIt As Boolean, Optional ByVal ShowWindow As Boolean = False) As Long


On Error Resume Next


Dim si As STARTUPINFO 'used to send info the CreateProcess


Dim pi As PROCESS_INFORMATION 'used to receive info about the created process


Dim retval As Long 'return value


'Dim hRead As Long 'the handle to the read end of the pipe


'Dim hWrite As Long 'the handle to the write end of the pipe


'Dim lgSize As Long 'returned number of bytes read by readfile


Dim sa As SECURITY_ATTRIBUTES


'Dim strResult As String 'returned results of the command line


With sa


.nLength = Len(sa)


.bInheritHandle = 1& 'inherit, needed for this to work


.lpSecurityDescriptor = 0&


End With


If ShowWindow Then


With si


.cb = Len(si)


.dwFlags = STARTF_USESHOWWINDOW 'tell it to use (not ignore) the values below


.wShowWindow = SW_NORMAL


'.hStdOutput = hWrite 'pass the write end of the pipe as the processes standard output


End With


Else


With si


.cb = Len(si)


.dwFlags = STARTF_USESHOWWINDOW 'tell it to use (not ignore) the values below


.wShowWindow = SW_HIDE


'.hStdOutput = hWrite 'pass the write end of the pipe as the processes standard output


End With


End If


retval = CreateProcess(vbNullString, CommandLine & vbNullChar, sa, sa, 1&, NORMAL_PRIORITY_CLASS, ByVal 0&, vbNullString, si, pi)


If WaitForIt Then


WaitForSingleObject pi.hProcess, INFINITE


End If


RunCommand = pi.dwProcessId


CloseHandle pi.hProcess


CloseHandle pi.hThread


End Function