How to check window in VB

Question

1.00/5 (1 vote)

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i want to check if the name.bat open or close but

What I have tried:

i try this with no success

VB

Dim CMDProc As Process() = Process.GetProcessesByName("window name")
    If CMDProc.Length > 0 Then
    Else
    '''''
  End If

the "Process.GetProcessesByName" not worked on batch file why?

Posted 22-Apr-19 6:55am

MasterGamerFX

Updated 22-Apr-19 21:37pm

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Comments

Richard MacCutchan 22-Apr-19 13:15pm

Maybe your process name is not correct. You can easily check by using Task Manager.

MasterGamerFX 22-Apr-19 13:23pm

i cant see process name of the cmd window
is there a way to check if cmd windowtitle is running in VB?

[no name] 22-Apr-19 14:10pm

"Process()" has a "Length"? Maybe you're not fast enough to catch any "batch windows". Maybe try a semaphore file and / or a file watcher.

MasterGamerFX 22-Apr-19 14:24pm

you can get me example please

3 solutions

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Dave Kreskowiak · Answer 1 · 2019-04-22T08:44:00

Solution 1

The "ProcessName" is not the title of the window. It's the name of the executable that's running without the ".exe" on the end. For any batch file, that would be "cmd".

Now, to find the CMD window that is running your batch file, you would look the MainWindowTitle of each of your CMD Process objects that you got back from Process.GetProcessesByName("cmd") and look for the text of the command line that you launched the batch file with.

For example, if your batch file is called "Test.bat" and you launched it with a command line of "test /someArgument 123", the MainWindowTitle property of the Process object for the CMD prompt window would be "C:\Windows\System32\cmd.exe - test /someArgument 123".

Posted 22-Apr-19 8:44am

Dave Kreskowiak

Updated 22-Apr-19 8:46am

v2

Comments

MasterGamerFX 22-Apr-19 15:24pm

explain me better ,please
i don't understand

Dave Kreskowiak 22-Apr-19 15:37pm

I don't know how to simplify this. You're getting the list of processes using GetProcessesByName("window name"). You can NOT use a window title in that call. You have to pass "cmd" instead.

Once you have the list of Processes, you have to check the MainWindowTitle property of each of those for what I described.

This comes down to reading the documentation on the Process class and using the debugger. You could have easily figured this out.

MasterGamerFX 22-Apr-19 16:20pm

Let me an example of that

Dave Kreskowiak 22-Apr-19 16:52pm

FFS. YOU'RE ALREADY DOING IT!! Just change the "window name" to "cmd".

Christian Graus · Answer 2 · 2019-04-22T11:31:00

Solution 2

An open file is locked. Try opening it in a try/catch statement

Posted 22-Apr-19 11:31am

Christian Graus

Comments

Dave Kreskowiak 22-Apr-19 21:08pm

I'm thinking he wants to know if it's running or not. Last I checked, a .BAT file can be written to while it's running.

MasterGamerFX 22-Apr-19 23:31pm

Correct, how i can do this
I try ,no sucess from me
Can you get me example

Dave Kreskowiak 23-Apr-19 8:16am

You can't, and won't succeed until you start using the debugger and start reading the documentation on the functions (methods) you're trying to use.

Right now, you're a copy'n'paste code hoping that whatever you copy into your own code will work. You have no understanding of anything at all.

Christian Graus 22-Apr-19 23:33pm

Dave says that a batch file is not locked when it's running. In that case, I think you were taking the right approach. I'd first confirm I could get a long running process with this code by name. Then I'd run the batch file and see what it's process is called. If it's something generic, you're hosed. If it's the file name, you can use that. Of course, this code will be very fragile either way

MasterGamerFX 23-Apr-19 3:10am

Ok but if i use get process by id the id of the batch file can changes everytime ,no ?

Christian Graus 23-Apr-19 3:13am

I assumed you could get it by name

MasterGamerFX 23-Apr-19 3:36am

Ok but ,how ,i try ,how let me example

Christian Graus · Answer 3 · 2019-04-22T21:38:00

Solution 3

From google"

Process.GetProcessesByName Method (System.Diagnostics) | Microsoft Docs[^]

Posted 22-Apr-19 21:38pm

Christian Graus

Comments

MasterGamerFX 23-Apr-19 4:43am

Not working with .bat batch file

Christian Graus 23-Apr-19 4:51am

It's an API. The code will work. You just need to work out what the name is. I'm concerned it's something generic. Have you checked?

MasterGamerFX 23-Apr-19 5:26am

Process.GetProcessesByName Method (System.Diagnostics)

Not working i checked out
Can you try this for me please

MasterGamerFX 23-Apr-19 12:50pm

i check it now this detect the cmd.exe but not window title i try cmd.exe -windowtitle eq test

Christian Graus 23-Apr-19 17:10pm

OK, if it gets run as cmd.exe, which I expected, then you can't do what you want

MasterGamerFX 23-Apr-19 17:43pm

ok after research issue i almost success
i used class MainWindowTitle.Contains(my title window)
but the condition not match for because its retruns ture
else not working with syntex
the code:

For Each p As Process In Process.GetProcesses
If p.MainWindowTitle.Contains("test23") Then
MsgBox("exist")

Exit For
End If
Next

Christian Graus 23-Apr-19 17:46pm

So you have code but it doesn't work? Does the process have a path property to the executable?

MasterGamerFX 24-Apr-19 5:26am

It returns true ,but when i add "else"
To check if condition is false
It returns true (before else line)

MasterGamerFX 25-Apr-19 2:25am

There must be another way

Christian Graus 25-Apr-19 2:27am

Sure, if you know magic

MasterGamerFX 25-Apr-19 4:09am

So what i can do ?

Christian Graus 25-Apr-19 4:14am

Ask Harry Potter? Pay someone to try if it's beyond you?