I love this community, you guys are really patient. Backslashes...... If you want to use single backslashed, you probably need to use "r" in front of the string
http://docs.python.org/ref/strings.html I strongly recommend anyone new to python to get :- 1. learning python from Mark lutz 2. python on win32 , mark hammond Its money well spent, you will be asking less questions that you wish u didnt ask. ----- Original Message ----- From: "Tim Roberts" <[EMAIL PROTECTED]> To: "Python-Win32 List" <python-win32@python.org> Sent: Saturday, February 23, 2008 2:54 AM Subject: Re: [python-win32] Wrapper Windows Installer API functions, ctypes, .dll Erik Fløisbonn wrote: > Hello, I am creating a .dll that I load in python with ctypes. The > .dll calls Windows Installer API functions (like MsiEnumProducts). I > am having trouble calling these functions from python. When I import > the msilib (or _msi) that comes with python, the function calls work. > But when I do not import them, the call does not work and I get the > following error message: > > WindowsError: [Error 182] The operatingsystem can not run %1 > > (Original message is in norwegian: WindowsError: [Error 182] > Operativsystemet kan ikke kjøre %1) > > I am wondering why the function calls are not working when I do not > import the msi module, and why they work when I do import the module. > > I am running Windows Vista and python 2.5.1. I am compiling the source > code with cl (from the windows SDK) like this: > > cl /LD msi.c msi.def "C:\Program Files\Microsoft > SDKs\Windows\v6.0\Lib\Msi.lib" > > My python file looks like this: > > from ctypes import * > # import msilib (everything works when I uncomment this) > print cdll.LoadLibrary("C:\Users\Erik\Documents\INF5660\Msi.dll").test(2) You can't write normal strings with single backslashes! You happened to get lucky here, because 'u', 'e', 'd', 'i', and 'm' aren't recognized escape codes, but if your name had been "Tom", this would not work. You can write this in one of three ways: print cdll.LoadLibrary("C:\\Users\\Erik\\Documents\\INF5660\\Msi.dll").test(2) print cdll.LoadLibrary(r"C:\Users\Erik\Documents\INF5660\Msi.dll").test(2) print cdll.LoadLibrary("C:/Users/Erik/Documents/INF5660/Msi.dll").test(2) However, this is not causing your immediate problem. You might try dumping the imports for your DLL, to see if it needs a DLL that it's not finding. You can use the "depends" tool for that, or just "link /dump /exports msi.dll". -- Tim Roberts, [EMAIL PROTECTED] Providenza & Boekelheide, Inc. _______________________________________________ python-win32 mailing list python-win32@python.org http://mail.python.org/mailman/listinfo/python-win32 _______________________________________________ python-win32 mailing list python-win32@python.org http://mail.python.org/mailman/listinfo/python-win32
