已知进程名，如何获得程序的PID？

[luoxinxin1988]

下面是小的写的一个根据进程ID获得文件路径的函数：
Public Function EnumFileName(Pid As Long) As String
Dim hProc As Long
Dim NFile As Long
Dim filename As String * 64
hProc = OpenProcess(PROCESS_ALL_ACCESS, False, pid)
NFile = GetModuleFileNameEx(hProc, 0, filename, 64)
EnumFileName = filename & vbNullString
n = CloseHandle(a)
End Function
可是这样的话，要知道程序的进程ID才能得到程序的路径，请问有没有方法，在已经知道进程名的情况下，得到进程ID呢？请指教一下！比如说，在任务管理器中，我已经知道QQ的进程名，请问如何根据这个已知条件得到QQ的进程ID，从而得到QQ的安装目录呢？谢谢！

[嗷嗷叫的老马]

............................................................

[panyulirong]

系統進程操作

Declare Function CreateToolhelp32Snapshot Lib "kernel32" (ByVal lFlags As Long, ByVal lProcessID As Long) As Long
Declare Function Process32First Lib "kernel32" (ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Declare Function Process32Next Lib "kernel32" (ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Declare Function Module32First Lib "kernel32" (ByVal hSnapShot As Long, uProcess As MODULEENTRY32) As Long
Declare Function Module32Next Lib "kernel32" (ByVal hSnapShot As Long, uProcess As MODULEENTRY32) As Long
Declare Function TerminateProcess Lib "kernel32" (ByVal hProcess As Long, ByVal uExitCode As Long) As Long
Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long
Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hWnd As Long, lpdwProcessId As Long) As Long
Const TH32CS_SNAPPROCESS = &H2
Const TH32CS_SNAPheaplist = &H1
Const TH32CS_SNAPthread = &H4
Const TH32CS_SNAPmodule = &H8
Const TH32CS_SNAPall = TH32CS_SNAPPROCESS + TH32CS_SNAPheaplist + _
TH32CS_SNAPthread + TH32CS_SNAPmodule
Const MAX_PATH As Integer = 260
Const PROCESS_TERMINATE = &H1

Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwFlags As Long
szExeFile As String * MAX_PATH
End Type

Type MODULEENTRY32
dwSize As Long
th32ModuleID As Long
th32ProcessID As Long
GlblcntUsage As Long
ProccntUsage As Long
modBaseAddr As Long
modBaseSize As Long
hModule As Long
szModule As String * 256
szExePath As String * 260
End Type

Function GetExeNameByHwnd(ByVal WinHandle As Long) As String
Dim Pid As Long
Dim tempstr As String
Dim proc As PROCESSENTRY32
Dim modl As MODULEENTRY32
Dim snapm As Long
Dim snap As Long
Dim theloop As Long
snap = CreateToolhelp32Snapshot(TH32CS_SNAPall, 0)
proc.dwSize = Len(proc)
modl.dwSize = Len(modl)
GetWindowThreadProcessId WinHandle, Pid
theloop = Process32First(snap, proc)
Do While theloop <> 0
If proc.th32ProcessID = Pid Then
snapm = CreateToolhelp32Snapshot(TH32CS_SNAPall, proc.th32ProcessID)
Module32First snapm, modl
CloseHandle snapm
tempstr = TrimNull(modl.szExePath)
GetExeNameByHwnd = IIf(tempstr <> "", tempstr, TrimNull(proc.szExeFile))
Exit Do
End If
theloop = Process32Next(snap, proc)
Loop
ex:
CloseHandle snap
End Function

'判斷進程是否在運行
Function IsProcessRunning(procname As String) As Long
Dim proc As PROCESSENTRY32
Dim snap As Long
Dim theloop As Long
Dim exePath As String

IsProcessRunning = -1
snap = CreateToolhelp32Snapshot(TH32CS_SNAPall, 0)
proc.dwSize = Len(proc)
theloop = Process32First(snap, proc)
Do While theloop <> 0
exePath = TrimNull(proc.szExeFile)
Debug.Print exePath
If UCase(procname) = UCase(exePath) Then
IsProcessRunning = proc.th32ProcessID
Exit Do
End If
theloop = Process32Next(snap, proc)
Loop
CloseHandle snap
End Function

'中止進程
Sub KillProcess(ByVal procname As String)
Dim r As Long
Dim Result As Long
Result = IsProcessRunning(procname)
If Result = -1 Then Exit Sub
r = OpenProcess(PROCESS_TERMINATE, True, Result)
TerminateProcess r, 0
End Sub

'是去除API返回的字符串中的NULL字符
Function TrimNull(ByVal ss As String) As String
On Error Resume Next
Dim NulPos As Long
NulPos = InStr(1, ss, vbNullChar)
TrimNull = IIf(NulPos <> 0, Left(ss, NulPos - 1), ss)
End Function

'根據PID獲取文件名稱
Sub Test()
Dim ME32 As MODULEENTRY32
Dim hWnd As Long
Dim Pid As Long
Dim hSnapShot As Long
Dim Ret As Long
hWnd = FindWindowA(vbNullString, "Office編程技巧")
GetWindowThreadProcessId hWnd, Pid
hSnapShot = CreateToolhelp32Snapshot(TH32CS_SNAPmodule, Pid)
ME32.dwSize = Len(ME32)
Ret = Module32First(hSnapShot, ME32)
Do While Ret <> 0
ExeName = ME32.szExePath
ExeName = LCase$(Left$(ExeName, InStr(ExeName, vbNullChar) - 1))
If InStr(ExeName, ".exe") <> 0 Then
MsgBox ExeName
Else
If ExeName <> "" Then Debug.Print ExeName
End If
Ret = Module32Next(hSnapShot, ME32)
Loop
End Sub

[luoxinxin1988]

多谢各位，方法太多了，我一个一个的试一下哈
为了公平，哪位朋友的方法好，分就多一点，也谢其他几位朋友的帮忙，谢谢！

[lsftest]

查询wmi的win32_process类的ProcessId属性

[kmlxk0]

Public Function ProcessToPID(ByVal sProcess As String, Optional bIncludingPath As Boolean = True) As Long
Dim ret As Long
Dim pid As Long
Dim hProcess As Long
Dim lpFileName As String * 1024
Dim proc As PROCESSENTRY32
Dim snap As Long
Dim lngContinue As Long
Dim sFileName As String
If bIncludingPath = False Then sProcess = PathToFile(sProcess)

snap = CreateToolhelpSnapshot(TH32CS_SNAPall, 0) '获得进程“快照”的句柄
proc.dwSize = Len(proc)
lngContinue = ProcessFirst(snap, proc) '获取第一个进程，并得到其返回值
While lngContinue <> 0 '当返回值非零时继续获取下一个进程

If bIncludingPath = True Then
hProcess = OpenProcess(PROCESS_ALL_ACCESS, True, pid)
Call GetModuleFileNameExA(hProcess, 0, lpFileName, 1024)
CloseHandle hProcess
sFileName = LCase(ConverNull(lpFileName))
Else
sFileName = LCase(ConverNull(proc.szexeFile))
End If
If LCase(sProcess) = sFileName Then
ret = proc.th32ProcessID
lngContinue = 0
End If
lngContinue = ProcessNext(snap, proc)
Wend
CloseHandle snap '关闭进程“快照”句柄

ProcessToPID = ret
End Function

[kmlxk0]

Public Function ConverNull(ByVal s As String) As String
Dim nullpos As Long
nullpos = InStr(s, Chr$(0))
If nullpos > 0 Then
ConverNull = Left(s, nullpos - 1)
Else
ConverNull = s
End If
End Function

[清晨曦月]

支持楼上

[Hotus]

Private Declare Function CreateToolhelp32Snapshot Lib "kernel32" (ByVal dwFlags As Long, ByVal th32ProcessID As Long) As Long
Private Declare Function Process32First Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long
Private Declare Function Process32Next Lib "kernel32" (ByVal hSnapshot As Long, lppe As PROCESSENTRY32) As Long
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal blnheritHandle As Long, ByVal dwAppProcessId As Long) As Long

Private Declare Function TerminateProcess Lib "kernel32" (ByVal ApphProcess As Long, ByVal uExitCode As Long) As Long

Private Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwFlags As Long
szExeFile As String * 1024
End Type

Const TH32CS_SNAPHEAPLIST = &H1
Const TH32CS_SNAPPROCESS = &H2
Const TH32CS_SNAPTHREAD = &H4
Const TH32CS_SNAPMODULE = &H8
Const TH32CS_SNAPALL = (TH32CS_SNAPHEAPLIST Or TH32CS_SNAPPROCESS Or TH32CS_SNAPTHREAD Or TH32CS_SNAPMODULE)
Const TH32CS_INHERIT = &H80000000
Dim PID As Long
Dim pname As String
Public Const PROCESS_TERMINATE = &H1

Public Function CheckExE(ByVal ExePath As String) As Long
Dim my As PROCESSENTRY32
Dim l As Long
Dim l1 As Long
Dim flag As Boolean
Dim mName As String
Dim i As Integer
l = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)
If l Then
my.dwSize = 1060
CheckExE = 0
If (Process32First(l, my)) Then '遍历第一个进程
Do
i = InStr(1, my.szExeFile, Chr(0))
mName = LCase(Left(my.szExeFile, i - 1))
If FindStr(mName, ExePath) = True Then
CheckExE = my.th32ProcessID
flag = True
Exit Function
'Else
' CheckExE = 0
' flag = False
End If
Loop Until (Process32Next(l, my) < 1) '遍历所有进程知道返回值为False
End If
l1 = CloseHandle(l)
End If

End Function

Public Function FindStr(ByVal iStr As String, ByVal iKey As String) As Boolean
Dim I As Integer
For I = 1 To Len(iStr) - (Len(iKey) - 1)
If UCase(iKey) = UCase(Mid(iStr, I, Len(iKey))) Or UCase(iKey) = UCase(iStr) Then
FindStr = True
Exit Function
Else
FindStr = False
End If
Next I
End Function


if checkexe("qq.exe")<>0 then
msgbox checkexe("qq.exe")
endif

[wubirong]

用GETPROCESSID

[wkl_6688]

学习

[唐古拉山]

Private Declare Function CloseHandle Lib "Kernel32.dll" (ByVal Handle As Long) As Long
Private Declare Function OpenProcess Lib "Kernel32.dll" (ByVal dwDesiredAccessas As Long, ByVal bInheritHandle As Long, ByVal dwProcId As Long) As Long
Private Declare Function EnumProcesses Lib "PSAPI.DLL" (ByRef lpidProcess As Long, ByVal cb As Long, ByRef cbNeeded As Long) As Long
Private Declare Function GetModuleFileNameExA Lib "PSAPI.DLL" (ByVal hProcess As Long, ByVal hModule As Long, ByVal ModuleName As String, ByVal nSize As Long) As Long
Private Declare Function EnumProcessModules Lib "PSAPI.DLL" (ByVal hProcess As Long, ByRef lphModule As Long, ByVal cb As Long, ByRef cbNeeded As Long) As Long


'返回符合进程名称的所有进程PID
'如果为没有，则返回空 (Empty)
Public Function GetProcessIdFromProcessName(ByVal strExeName As String) As Variant
On Error Resume Next
Const clMaxNumProcesses As Long = 5000
Const MAX_PATH = 260
Const PROCESS_QUERY_INFORMATION = 1024
Const PROCESS_VM_READ = 16
Dim strModuleName As String * MAX_PATH
Dim strProcessNamePath As String
Dim strProcessName As String
Dim allMatchingProcessIDs() As Long
Dim alModules(1 To 400) As Long
Dim lBytesReturned As Long
Dim lNumMatching As Long
Dim lNumProcesses As Long
Dim lBytesNeeded As Long
Dim alProcIDs() As Long
Dim lHwndProcess As Long
Dim lThisProcess As Long
Dim lRet As Long
On Error GoTo Z
strExeName = UCase$(Trim$(strExeName))
ReDim alProcIDs(clMaxNumProcesses * 4) As Long
lRet = EnumProcesses(alProcIDs(1), clMaxNumProcesses * 4, lBytesReturned)
lNumProcesses = lBytesReturned / 4
ReDim Preserve alProcIDs(lNumProcesses)
ReDim allMatchingProcessIDs(1 To lNumProcesses)
For lThisProcess = 1 To lNumProcesses
If lHwndProcess > 0 Then lRet = CloseHandle(lHwndProcess)
lHwndProcess = OpenProcess(PROCESS_QUERY_INFORMATION Or PROCESS_VM_READ, 0, alProcIDs(lThisProcess))
If lHwndProcess <> 0 Then
lRet = EnumProcessModules(lHwndProcess, alModules(1), 200&, lBytesNeeded)
If lRet <> 0 Then
lRet = GetModuleFileNameExA(lHwndProcess, alModules(1), strModuleName, MAX_PATH)
strProcessNamePath = Trim$(UCase$(Left$(strModuleName, lRet)))
strProcessName = Mid$(strProcessNamePath, InStrRev(strProcessNamePath, "\") + 1)
If strProcessName = strExeName Then
lNumMatching = lNumMatching + 1
allMatchingProcessIDs(lNumMatching) = alProcIDs(lThisProcess)
End If
End If
If lHwndProcess > 0 Then lRet = CloseHandle(lHwndProcess)
End If
Next
If lNumMatching Then
ReDim Preserve allMatchingProcessIDs(1 To lNumMatching)
GetProcessIdFromProcessName = allMatchingProcessIDs
Else
GetProcessIdFromProcessName = Empty
End If
Exit Function
Z:
GetProcessIdFromProcessName = Empty
End Function