Re: WindowsXP/ CTypes - How to convert ctypes array to a string?

[dudeja.rajat]

On Tue, Aug 19, 2008 at 12:20 PM, Fredrik Lundh <fr*****@python ware.comwrote:

du**********@gm ail.com wrote:

>I've used CTYPES module to access a function from a dll. This function
provides me the version of the dll. This information is accessible to
me as an array of 4 long inetegers. information as :
2, 1, 5, 0

I want to display these elements concatenated as "v2.1.5.0". This
string ( I'm thinking of writing the above 4 array elements to a
string) is to be displayed as label in a GUI ( the GUI used is Tk)

Please suggest how can I write these elements to a string to get me
the desired results as "v2.1.5.0". And, is writing to a string is
right way?

any special reason why you're not reading replies to your previous post?

here's what I wrote last time.

expecting that Python/ctypes should be able to figure out that you
want an array of 4 integers printed as a dot-separated string is a
bit optimistic, perhaps. but nothing that a little explicit string
formatting cannot fix:

>>>from ctypes import *
versionArr = c_long * 4
version = versionArr(1, 2, 3, 4)
"%d.%d.%d.%d " % tuple(version)

'1.2.3.4'

inserting a "v" in the format string gives you the required result:

>>>"v%d.%d.%d.% d" % tuple(version)

'v1.2.3.4'

</F>

--
http://mail.python.org/mailman/listinfo/python-list

Fredrik,
My apology for any confusion created.
I read all the replies. In fact I'm thankful to you all guys who are
responding so quickly to all questions.

I also add the letter 'v' same as you suggested. However, I'm looking
to store this into some variable ( that variable could be be a string,
tuple or anything, Im not sure which is the suited one) so that I can
access it in some other module that will then display this version
information in a Label Widet in GUI.

So, what is the best way to store 'v1.2.3.4' in a variable? And, what
type of variable is most suited (so as able to be used in other module
probably, as string there)?

Thanks,
Rajat