问题描述
由于Windows更新发生了对ShellExecuteEx(sExecuteInfo)的api调用,崩溃了在0x75F7A529(shell32.dll)访问冲突读取位置0x68686903处理的未处理的异常。我不知道这里有什么问题,你能帮我吗?
since Windows updates occurred an api call to ShellExecuteEx(sExecuteInfo) crashes saying "unhandled exception at 0x75F7A529 (shell32.dll) Access violation reading location 0x68686903". I have no clue what is wrong here, can you help me please ?
定义:
Private Type SHELLEXECUTEINFO
cbSize As Long
fMask As Long
Hwnd As Long
lpVerb As String
lpFile As String
lpParameters As String
lpDirectory As String
nShow As Long
hInstApp As Long
lpIDList As Long
lpClass As String
hkeyClass As Long
dwHotKey As Long
hIcon As Long
hProcess As Long
End Type
Private Const STILL_ACTIVE As Long = &H103 ' Constant for the lpExitCode parameter of the GetExitCodeProcess API function.
Private Declare PtrSafe Function ShellExecuteEx Lib "shell32.dll" Alias "ShellExecuteExA" (lpExecInfo As SHELLEXECUTEINFO) As Long
代码:
Private Function ShellAndWait(ByVal szProgram As String, Optional ByVal szOptions As String, Optional ByVal iWindowState As Integer = vbHide) As Boolean
Dim lTaskID As Long
Dim lReturn As Long
Dim lExitCode As Long
Dim lResult As Long
Dim bShellAndWait As Boolean
Dim hInstance As Object
Dim lPriority As Long
On Error GoTo ErrorHandler
Dim sExecuteInfo As SHELLEXECUTEINFO
sExecuteInfo.cbSize = Len(sExecuteInfo)
sExecuteInfo.lpVerb = "open"
sExecuteInfo.lpFile = szProgram
sExecuteInfo.lpParameters = szOptions
sExecuteInfo.nShow = &H7 ' Parameter SW_SHOWMINNOACTIVE, (0x7) , displays the window as a minimized window. The active window remains active.
sExecuteInfo.fMask = &H8140 ' Parameter SEE_MASK_NO_CONSOLE (0x00008000), use to inherit the parent's console for the new process instead of having it create a new console
' Parameter SEE_MASK_NOASYNC (0x00000100), wait for the execute operation to complete before returning.
' Parameter SEE_MASK_NOCLOSEPROCESS (0x00000040), puts process id back in sExecuteInfo.hProcess
lPriority = &H100000 'PROCESS_MODE_BACKGROUND_BEGIN
lReturn = ShellExecuteEx(sExecuteInfo)
'Loop while the shelled process is still running.
Do
'lExitCode will be set to STILL_ACTIVE as long as the shelled process is running.
lResult = GetExitCodeProcess(sExecuteInfo.hProcess, lExitCode)
DoEvents
'iCount = iCount + 1
'Application.StatusBar = Str(iCount) + " iteration waited"
Loop While lExitCode = STILL_ACTIVE
bShellAndWait = True
Exit Function
ErrorHandler:
sErrMsg = Err.Description
bShellAndWait = False
End Function
推荐答案
使用Microsoft推荐的方式。
通过不同的API调用建议方法,我可以确认它是否可靠工作。我正在发布代码模块(从文章中的代码中获取)。
Use way recommended by Microsoft.
MSDN article "Determine When a Shelled Process Ends" recommends approach through different API call and I can confirm it is working reliably. I'm posting code module (adopted from code in the article) here.
以下使用 CreateProcessA()
,等待应用程序完成并返回ERRORLEVEL代码作为结果:
The following module which uses CreateProcessA()
, waits for application to finish and returns ERRORLEVEL code as result:
Option Explicit
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 Declare Function WaitForSingleObject Lib "kernel32" (ByVal _
hHandle As Long, ByVal dwMilliseconds As Long) As Long
Private Declare Function CreateProcessA Lib "kernel32" (ByVal _
lpApplicationName As String, ByVal lpCommandLine As String, ByVal _
lpProcessAttributes As Long, ByVal lpThreadAttributes As Long, _
ByVal bInheritHandles As Long, ByVal dwCreationFlags As Long, _
ByVal lpEnvironment As Long, ByVal lpCurrentDirectory As String, _
lpStartupInfo As STARTUPINFO, lpProcessInformation As _
PROCESS_INFORMATION) As Long
Private Declare Function CloseHandle Lib "kernel32" _
(ByVal hObject As Long) As Long
Private Declare Function GetExitCodeProcess Lib "kernel32" _
(ByVal hProcess As Long, lpExitCode As Long) As Long
Private Const NORMAL_PRIORITY_CLASS = &H20&
Private Const INFINITE = -1&
Public Function ExecCmd(CommandLine As String) As Long
Dim proc As PROCESS_INFORMATION
Dim Start As STARTUPINFO
Dim ret As Long
' Initialize the STARTUPINFO structure:
Start.cb = Len(Start)
' Start the shelled application:
ret& = CreateProcessA(vbNullString, CommandLine, 0&, 0&, 1&, _
NORMAL_PRIORITY_CLASS, 0&, vbNullString, Start, proc)
' Wait for the shelled application to finish:
ret& = WaitForSingleObject(proc.hProcess, INFINITE)
Call GetExitCodeProcess(proc.hProcess, ret&)
Call CloseHandle(proc.hThread)
Call CloseHandle(proc.hProcess)
ExecCmd = ret&
End Function
ExceModule
,那么您可以将其称为
If you store it as e.g. ExceModule
, then you can call it as
Dim errorLevelValue As Long
errorLevelValue = ExecModule.ExecCmd(CommandLine)
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