VBScript - How to make program wait until process has finished? - vba

Question

I have a problem in a VBScript that I am using with a VBA/Excel macro and a HTA. The problem is just the VBScript, I have the other two components, i.e. the VBA macro and HTA front-end working perfectly. But before I explain the problem, I think for you to help me I must help you understand the context of the VBScript.
So, basically all components (VBScript, VBA macro and HTA) are parts of a tool that I am building to automate some manual chores. It pretty much goes like this:
A - HTA
~~~~~~~~~~~~
User selects some files from the HTA/GUI.
Within the HTML of the HTA there is some VBScript within the "SCRIPT" tags which passes the users 4 input files as arguments to a VBScript (executed by WScript.exe - you may refer to note #1 for clarity here)
The script, lets call it myScript.vbs from now on then handles the 4 arguments, 3 of which are specific files and the 4th is a path/folder location that has multiple files in it - (also see note #2 for clarity)
B - myScript.vbs
~~~~~~~~~~~~
myScript.vbs opens up the first 3 arguments which are Excel files. One of them is a *.xlsm file that has my VBA macro.
myScript.vbs then uses the 4th argument which is a PATH to a folder that contains multiple files and assigns that to a variable for passing to a FileSystemObject object when calling GetFolder, i.e.
... 'Other code here, irrelevant for this post
Dim FSO, FLD, strFolder
... 'Other code here, irrelevant for this post
arg4 = args.Item(3)
strFolder = arg4
Set FSO = CreateObject("Scripting.FileSystemObject"
'Get a reference to the folder you want to search
Set FLD = FSO.GetFolder(strFolder)
...
From here I create a loop so that I can sequentially open the files within the folder
and then run my macro, i.e.
...
Dim strWB4, strMyMacro
strMyMacro = "Sheet1.my_macro_name"
'loop through the folder and get the file names
For Each Fil In FLD.Files
Set x4WB = x1.Workbooks.Open(Fil)
x4WB.Application.Visible = True
x1.Run strMyMacro
x4WB.close
Next
...
Please note that when the first 3 Excel files have opened (controlled by code prior to the loop, and not shown here as I am having no problem with that part) I must keep them open.
It is the files in the folder (that was passed as the 4th argument) which must sequentially open and close. But inbetween opening and closing, I require the VBA/macro (wrote in one of the 3 Excel files previously opened) to run each time the loop iterates and opens a new file from the folder (I hope you follow - if not please let me know :) ).
The problem I am having is that the files in the folder open and close, open and close, n number of times (n = # of files in folder, naturally) without waiting for the macro to run. This is not what I want. I have tried the WScript.sleep statement with a 10 second delay after the 'x1.Run strMyMacro' statement, but to no avail.
Any ideas?
Thanks,
QF.
NOTES:
1 - For simplicity/clarity this is how:
strCMD = cmd /c C:\windows\system32\wscript.exe myScript.vbs <arg1> <arg2> <arg3> <arg4>
'FYI - This is run by creating a WShell object, wsObj, and using the .run method, i.e. WShell.run(strCMD)
2 The HTA employs a piece of JavaScript that strips the users 4th input file (HTML: INPUT TYPE="file") and passes that to the the VBScript within the HTA. This gets me round the problem of not being able to exclusively select a FOLDER in HTML.

Answer 1

You need to tell the run to wait until the process is finished. Something like:
const DontWaitUntilFinished = false, ShowWindow = 1, DontShowWindow = 0, WaitUntilFinished = true
set oShell = WScript.CreateObject("WScript.Shell")
command = "cmd /c C:\windows\system32\wscript.exe <path>\myScript.vbs " & args
oShell.Run command, DontShowWindow, WaitUntilFinished
In the script itself, start Excel like so. While debugging start visible:
File = "c:\test\myfile.xls"
oShell.run """C:\Program Files\Microsoft Office\Office14\EXCEL.EXE"" " & File, 1, true

Answer 2

strComputer = "."
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2:Win32_Process")
objWMIService.Create "notepad.exe", null, null, intProcessID
Set objWMIService = GetObject("winmgmts:\\" & strComputer & "\root\cimv2")
Set colMonitoredProcesses = objWMIService.ExecNotificationQuery _
("Select * From __InstanceDeletionEvent Within 1 Where TargetInstance ISA 'Win32_Process'")
Do Until i = 1
Set objLatestProcess = colMonitoredProcesses.NextEvent
If objLatestProcess.TargetInstance.ProcessID = intProcessID Then
i = 1
End If
Loop
Wscript.Echo "Notepad has been terminated."

Answer 3

This may not specifically answer your long 3 part question but this thread is old and I found this while searching today. Here is one shorter way to: "Wait until a process has finished." If you know the name of the process such as "EXCEL.EXE"
strProcess = "EXCEL.EXE"
Set objWMIService = GetObject("winmgmts:{impersonationLevel=impersonate}!\\.\root\cimv2")
Set colProcesses = objWMIService.ExecQuery ("Select * from Win32_Process Where Name = '"& strProcess &"'")
Do While colProcesses.Count > 0
Set colProcesses = objWMIService.ExecQuery ("Select * from Win32_Process Where Name = '"& strProcess &"'")
Wscript.Sleep(1000) 'Sleep 1 second
'msgbox colProcesses.count 'optional to show the loop works
Loop
Credit to: http://crimsonshift.com/scripting-check-if-process-or-program-is-running-and-start-it/

Answer 4

Probably something like this? (UNTESTED)
Sub Sample()
Dim strWB4, strMyMacro
strMyMacro = "Sheet1.my_macro_name"
'
'~~> Rest of Code
'
'loop through the folder and get the file names
For Each Fil In FLD.Files
Set x4WB = x1.Workbooks.Open(Fil)
x4WB.Application.Visible = True
x1.Run strMyMacro
x4WB.Close
Do Until IsWorkBookOpen(Fil) = False
DoEvents
Loop
Next
'
'~~> Rest of Code
'
End Sub
'~~> Function to check if the file is open
Function IsWorkBookOpen(FileName As String)
Dim ff As Long, ErrNo As Long
On Error Resume Next
ff = FreeFile()
Open FileName For Input Lock Read As #ff
Close ff
ErrNo = Err
On Error GoTo 0
Select Case ErrNo
Case 0: IsWorkBookOpen = False
Case 70: IsWorkBookOpen = True
Case Else: Error ErrNo
End Select
End Function