Executing a program when the computer starts up

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Hi everybody,
I am using windows 7. I have a cpp program which reads information from a bluetooth device and writes it to a txt file. I works properly.
I want it to start execution automatically when the windows starts up. for this purpose i created a batch file with the statement

"start /min C:\Users\wecare\Desktop\help\comport\Debug\comport.exe"

and put it to Startup directory of the windows. Well,it starts execution with the windows. But the problem is that,when it starts execution automatically when the computer starts up, it does not open the relevant txt file and writes in it! However, it can write when i just execute it normally (on visual studio).
Is there any idea?
Thank you...

Posted 26-Dec-11 22:32pm

mstftrn

Updated 26-Dec-11 22:49pm

Mehdi Gholam

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OriginalGriff · Answer 1 · 2011-12-26T22:38:00

Probably, it is due to permissions - when the app starts there is no user logged in, and the app does not have permission to access the file. When you run it manually, it gets it's permissions from your user ID and can work with it fine.

Try changing the file (and the folder it is in) permissions so that anyone can read and write it.
Or run the app as a specific user - google can probably help there: http://www.google.co.uk/search?sourceid=chrome&ie=UTF-8&q=execute+app+as+user[^] (I've never tried to do it, so I can't be sure how)

Lactoferrin · Answer 2 · 2011-12-26T22:41:00

Solution 3

If you use relative path in your source code,you may need to chdir to the correct directory before starting the program.

Posted 26-Dec-11 22:41pm

Lactoferrin

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Mohibur Rashid 27-Dec-11 4:41am

this is a good one

mstftrn 27-Dec-11 5:31am

the txt file is in the same directory with the program, so i had just written
myfile.open ("oximetry.txt");
Did you mean that...

Lactoferrin 27-Dec-11 5:39am

myfile.open ("oximetry.txt");tries to open currentdirectory\oximetry.txt
not dirofexefile\oximetry.txt
try cd C:\Users\wecare\Desktop\help\comport\Debug before start /min....

JackDingler 27-Dec-11 16:23pm

Your permissions are restricted in the startup folder.

Try writing to a different folder.

Mohibur Rashid · Answer 3 · 2011-12-26T22:38:00

may be your blue tooth is not ready yet when your program start working.

How about writing a log file on the action of opening bluetooth device and see if it can open the bluetooth(more accurately if it can find the device at all)

Another thing, you also should check in what mode you run your application when you test and when it start from startup. cause Application mode(Administrative and non administrative(something like that)) do a lots of deal too.

Tanveer A · Answer 4 · 2011-12-26T23:21:00

Solution 4

you bind your batch file with control panel schedule task program

Posted 26-Dec-11 23:21pm

Tanveer A

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mstftrn 27-Dec-11 5:28am

I am sorry but i dont know how to do that...
Can you help please?

Executing a program when the computer starts up

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