<span class="Apple-style-span" style="border-collapse: collapse; font-family: Arial, 'Liberation Sans', 'DejaVu Sans', sans-serif; font-size: 14px; line-height: 18px; "><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

Hi Ppl,</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

 I have been trying to call a C DLL built in GCC with cygwin and Eclipse IDE from python. Since this DLL was built using cygwin it had the following two DLL's as dependency. cygwin1.dll and cyggcc_s-1.dll</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

I'm calling the cygwin_dll_init method in the cygwin1.dll before accessing my DLL. When I call one of the methods within my DLL I get the WindowsError: exception: access violation... error</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

the functions prototype is like: int function(char *, char *) I'm calling the function as: DLL = cdll.LoadLibrary (DLL_NAME) print DLL.function(c_char_p("string1"),c_char_p("string2)")</p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

This error is not consistent with all the stations. I occurs consistently in many XP machines, while in Windows 7, this occurs once in a while. In Win 7 in starts up a Pythonw.exe process when calling function successfully. I'm not sure why this error occurs. Any help ??</p>

<p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

Thanks, </p><p style="margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; border-top-width: 0px; border-right-width: 0px; border-bottom-width: 0px; border-left-width: 0px; border-style: initial; border-color: initial; font-size: 14px; vertical-align: baseline; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; clear: both; word-wrap: break-word; background-position: initial initial; background-repeat: initial initial; ">

Sathish</p></span>