Ik wil vanuit een vb6 applicatie een msdos programma starten. De 'normale' [shell] methode werkt niet, slaat vast :-((
Wat te doen?
Wat te doen?
Give a man a game and he'll have fun for a day. Teach a man to make games and he'll never have fun again.
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| Option Explicit
Public Declare Function ShellExecute Lib "shell32.dll" Alias _
"ShellExecuteA" (ByVal hwnd As Long, ByVal lpszOp As _
String, ByVal lpszFile As String, ByVal lpszParams As String, _
ByVal lpszDir As String, ByVal FsShowCmd As Long) As Long
Public Declare Function GetDesktopWindow Lib "user32" () As Long
' hWnd = Window handle to a parent window.
' This window receives any message boxes that an application produces.
'
' lpszOp = Address of a null-terminated string that specifies the operation to perform.
' The following operation strings are valid:
' open, print, explore
' This parameter can be NULL. In that case, the function opens the file specified
' by lpFile.
'
' lpFile = Address of a null-terminated string that specifies the file to open
' or print or the folder to open or explore. The function can open an executable
' file or a document file. The function can print a document file.
'
' lpParameters = If the lpFile parameter specifies an executable file,
' lpParameters is an address to a null-terminated string that specifies
' the parameters to be passed to the application.
' If lpFile specifies a document file, lpParameters should be NULL.
'
' lpDirectory = Address of a null-terminated string that specifies
' the default directory.
'
' nShowCmd = If lpFile specifies an executable file, nShowCmd specifies
' how the application is to be shown when it is opened.
' This parameter can be one of the following values:
Const SW_HIDE = 0 ' Hides the window and activates another window.
Const SW_MAXIMIZE = 3 ' Maximizes the specified window.
Const SW_MINIMIZE = 6 ' Minimizes the specified window and activates the next top-level window in the z-order.
Const SW_RESTORE = 9 ' Activates and displays the window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when restoring a minimized window.
Const SW_SHOW = 5 ' Activates the window and displays it in its current size and position.
Const SW_SHOWDEFAULT = 10 ' Sets the show state based on the SW_ flag specified in theSTARTUPINFO structure passed to theCreateProcess function by the program that started the application. An application should callShowWindow with this flag to set the initial show state of its main window.
Const SW_SHOWMAXIMIZED = 3 ' Activates the window and displays it as a maximized window.
Const SW_SHOWMINIMIZED = 2 ' Activates the window and displays it as a minimized window.
Const SW_SHOWMINNOACTIVE = 7 ' Displays the window as a minimized window. The active window remains active.
Const SW_SHOWNA = 8 ' Displays the window in its current state. The active window remains active.
Const SW_SHOWNOACTIVATE = 4 ' Displays a window in its most recent size and position. The active window remains active.
Const SW_SHOWNORMAL = 1 ' Activates and displays a window. If the window is minimized or maximized, Windows restores it to its original size and position. An application should specify this flag when displaying the window for the first time.
' If lpFile specifies a document file, nShowCmd should be zero.
' You can use this function to open or explore a shell folder.
' To open a folder, use either
'
' ShellExecute(handle, NULL, path_to_folder, NULL, NULL, SW_SHOWNORMAL);
' or
' ShellExecute(handle, "open", path_to_folder, NULL, NULL, SW_SHOWNORMAL);
'
' To explore a folder, use the following call:
'
' ShellExecute(handle, "explore", path_to_folder, NULL, NULL, SW_SHOWNORMAL);
'
' If lpOperation is NULL, the function opens the file specified by lpFile. If lpOperation is "open" or "explore", the function will attempt to open or explore the folder.
'
' To obtain information about the application that is launched as a result of calling
'
' Returns a value greater than 32 if successful, or an error value that is less
' than or equal to 32 otherwise. The following table lists the error values.
' The return value is cast as an HINSTANCE for backward compatibility with 16-bit
' Microsoft® Windows® applications. It is not a true HINSTANCE, however.
' The only thing that can be done with the returned HINSTANCE is to cast it to an
' integer and compare it with the value 32 or one of the error codes below.
Const SE_ERR_FNF = 2 ' File not found
Const SE_ERR_PNF = 3 ' Path not found
Const SE_ERR_ACCESSDENIED = 5 ' Access denied
Const SE_ERR_OOM = 8 ' Out of memory
Const SE_ERR_DLLNOTFOUND = 32 ' DLL not found
Const SE_ERR_SHARE = 26 ' A sharing violation occurred
Const SE_ERR_ASSOCINCOMPLETE = 27 ' Incomplete or invalid file association
Const SE_ERR_DDETIMEOUT = 28 ' DDE Time out
Const SE_ERR_DDEFAIL = 29 ' DDE transaction failed
Const SE_ERR_DDEBUSY = 30 ' DDE busy
Const SE_ERR_NOASSOC = 31 ' No association for file extension
Const ERROR_BAD_FORMAT = 11& ' Invalid EXE file or error in EXE image
Const ERROR_FILE_NOT_FOUND = 2& ' The specified file was not found.
Const ERROR_PATH_NOT_FOUND = 3& ' The specified path was not found.
Const ERROR_BAD_EXE_FORMAT = 193& ' The .exe file is invalid (non-Win32® .exe or error in .exe image).
Public Function ShellExecLaunchFile(ByVal strPathFile As String, ByVal strOpenInPath As String, ByVal strArguments As String) As Long
Dim Scr_hDC As Long
'Get the Desktop handle
Scr_hDC = GetDesktopWindow()
'Launch File
ShellExecLaunchFile = ShellExecute(Scr_hDC, "Open", strPathFile, "", strOpenInPath, SW_SHOWNORMAL)
End Function
Public Function ShellExecLaunchErr(ByVal lngErrorNumber As Long, ByVal blnRaiseMsg As Boolean) As String
Dim msg As VbMsgBoxResult
Dim strErrorMessage As String
If lngErrorNumber < 33 Then
'There was an error
Select Case lngErrorNumber
Case SE_ERR_FNF
strErrorMessage = "File not found"
Case SE_ERR_PNF
strErrorMessage = "Path not found"
Case SE_ERR_ACCESSDENIED
strErrorMessage = "Access denied"
Case SE_ERR_OOM
strErrorMessage = "Out of memory"
Case SE_ERR_DLLNOTFOUND
strErrorMessage = "DLL not found"
Case SE_ERR_SHARE
strErrorMessage = "A sharing violation occurred"
Case SE_ERR_ASSOCINCOMPLETE
strErrorMessage = "Incomplete or invalid file association"
Case SE_ERR_DDETIMEOUT
strErrorMessage = "DDE Time out"
Case SE_ERR_DDEFAIL
strErrorMessage = "DDE transaction failed"
Case SE_ERR_DDEBUSY
strErrorMessage = "DDE busy"
Case SE_ERR_NOASSOC
strErrorMessage = "No association for file extension"
Case ERROR_BAD_FORMAT
strErrorMessage = "Invalid EXE file or error in EXE image"
Case ERROR_FILE_NOT_FOUND
strErrorMessage = "The specified file was not found."
Case ERROR_PATH_NOT_FOUND
strErrorMessage = "The specified path was not found."
Case ERROR_BAD_EXE_FORMAT
strErrorMessage = "The .exe file is invalid (non-Win32® .exe or error in .exe image)."
Case Else
strErrorMessage = "Unknown error"
End Select
'If the blnRaiseMsg = True then raise a MsgBox with error
If blnRaiseMsg = True Then msg = MsgBox(strErrorMessage, vbCritical, "Error:")
'Return Error string
ShellExecLaunchErr = blnRaiseMsg
End If
End Function
' So the way to use all this is:
'
' Dim lngReturnNumber As Long
'
' lngReturnNumber = ShellExecLaunchFile(txtPathFile.Text, txtStartPath.Text, txtArguments.Text)
' If lngReturnNumber < 33 Then
' Call ShellExecLaunchErr(lngReturnNumber, True)
' Exit Sub
' End If
'
'==================================================================================
'
'
'Use the following runRegEntry Function to Silently Run .reg Files
'
Public Function runRegEntry(strPathFile As String) As Boolean
On Error GoTo Command1Err
Dim dblTemp As Double
dblTemp = Shell("regedit.exe /s " & strPathFile, vbHide)
runRegEntry = True
Exit Function
Command1Err:
Dim msg As VbMsgBoxResult
msg = MsgBox("Error # " & CStr(Err.Number) & " " & Err.Description & vbNewLine & "With: " & strPathFile, vbCritical, "Error:")
Err.Clear ' Clear the error.
runRegEntry = False
End Function |
Verwijderd schreef op 23 september 2002 @ 21:10:
De 'normale' [shell] methode werkt niet, slaat vast :-((
Ken Thompson's famous line from V6 UNIX is equaly applicable to this post:
'You are not expected to understand this'
Normaalgezien niet. In Visual Basic wordt het programma opgeroepen en gaat hij direct verder met het uitvoeren van de rest van het script. Als ik mij toch niet vergis...Janoz schreef op 23 september 2002 @ 21:54:
[...]
Al eens geprobeert te bedenken waarom shell vastslaat?
Je programmatje gaat pas verder als de in de shell aangeroepen opdracht klaar is toch?
Verwijderd
Klopt, behalve als je het aanroept als volgt:WimB schreef op 23 september 2002 @ 21:56:
[...]
Normaalgezien niet. In Visual Basic wordt het programma opgeroepen en gaat hij direct verder met het uitvoeren van de rest van het script. Als ik mij toch niet vergis...
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| Public 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 Public Type PROCESS_INFORMATION hProcess As Long hThread As Long dwProcessID As Long dwThreadID As Long End Type Public Const SW_HIDE = 0 Public Const SW_SHOWNORMAL = 1 Public Const SW_NORMAL = 1 Public Const SW_SHOWMINIMIZED = 2 Public Const SW_SHOWMAXIMIZED = 3 Public Const SW_MAXIMIZE = 3 Public Const SW_SHOWNOACTIVATE = 4 Public Const SW_SHOW = 5 Public Const SW_MINIMIZE = 6 Public Const SW_SHOWMINNOACTIVE = 7 Public Const SW_SHOWNA = 8 Public Const SW_RESTORE = 9 Public Const SW_SHOWDEFAULT = 10 Public Const SW_MAX = 10 Public Const NORMAL_PRIORITY_CLASS = &H20& Public Const INFINITE = -1& Public Declare Function CreateProcessA Lib "kernel32" (ByVal _ lpApplicationName As Long, 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 Public Declare Function WaitForSingleObject Lib "kernel32" (ByVal _ hHandle As Long, ByVal dwMilliseconds As Long) As Long Public Declare Function GetExitCodeProcess Lib "kernel32" _ (ByVal hProcess As Long, lpExitCode As Long) As Long Public Declare Function CloseHandle Lib "kernel32" (ByVal _ hObject As Long) As Long Public Function ShellAndWait(ByVal strPath As String, _ ByVal iWindowStyle As Integer, ByRef lreturnCode As Long, _ Optional sWinTitle As String = "", _ Optional sDirectoryPath As String = "") _ As Boolean Dim proc As PROCESS_INFORMATION Dim start As STARTUPINFO Dim ret As Long On Error GoTo ShellAndWaiterr ' Initialize the STARTUPINFO structure: start.cb = Len(start) ' you must set the size start.dwFlags = &H1& ' STARTF_USESHOWWINDOW Use Show Window start.wShowWindow = iWindowStyle If Not IsMissing(sWinTitle) Then ' if there is a title set the window title start.lpTitle = sWinTitle End If ' Start the shelled application: ret = CreateProcessA(0&, strPath, 0&, 0&, 1&, _ NORMAL_PRIORITY_CLASS, 0&, _ sDirectoryPath, start, _ proc) ' Wait for the shelled application to finish: ret = WaitForSingleObject(proc.hProcess, 100&) Do While ret <> 0 If ret < 0 Then ShellAndWait = False Exit Function End If DoEvents ret = WaitForSingleObject(proc.hProcess, _ 100&) Loop 'get the return code ret = GetExitCodeProcess(proc.hProcess, _ lreturnCode) 'close the process handles ret = CloseHandle(proc.hProcess) ShellAndWait = True Exit Function ShellAndWaiterr: ShellAndWait = False Exit Function Resume End Function |
Verwijderd
ping is dan ook geen msdos programmaVerwijderd schreef op 24 september 2002 @ 09:46:
lig eraan wat je wil starten...
een ping kan je wel met shell of shellexecute starten...
Verwijderd
Win32 console programma.