473,573 Members | 3,106 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

how to export functions by name for ctype

I'm on Windows with VS2005 testing ctypes on a very simple dll
I create a test.dll project which exports a function fntest(). I don't
touch anything in the autogenerated source and build it. I can load
the dll but can't access the function by its name fntest. Only by
ordinal number or calling getattr with "?fntest@@YAHXZ ". How do I
export functions by name? It's probably rather a VS2005 question, but
I'm a bit disappointed ctypes doesn't work with a default export
convention.
Jun 27 '08 #1
2 1617
rych <ry*****@gmail. comwrote:
I'm on Windows with VS2005 testing ctypes on a very simple dll
I create a test.dll project which exports a function fntest(). I don't
touch anything in the autogenerated source and build it. I can load
the dll but can't access the function by its name fntest. Only by
ordinal number or calling getattr with "?fntest@@YAHXZ ". How do I
export functions by name? It's probably rather a VS2005 question, but
I'm a bit disappointed ctypes doesn't work with a default export
convention.
I guess you've compiled your DLL with C++ and the above is a C++
mangled name.

Either compile it with C, or export the names in an extern "C" { }
block.
--
Nick Craig-Wood <ni**@craig-wood.com-- http://www.craig-wood.com/nick
Jun 27 '08 #2
On 23 Jun, 10:32, Nick Craig-Wood <n...@craig-wood.comwrote:
rych <rych...@gmail. comwrote:
*I'm on Windows with VS2005 testing ctypes on a very simple dll
*I create a test.dll project which exports a function fntest(). I don't
*touch anything in the autogenerated source and build it. I can load
*the dll but can't access the function by its name fntest. Only by
*ordinal number or calling getattr with "?fntest@@YAHXZ ". How do I
*export functions by name? It's probably rather a VS2005 question, but
*I'm a bit disappointed ctypes doesn't work with a default export
*convention.

I guess you've compiled your DLL with C++ and the above is a C++
mangled name.

Either compile it with C, or export the names in an extern "C" { }
block.

--
Nick Craig-Wood <n...@craig-wood.com--http://www.craig-wood.com/nick
That fixed it, thank you.
Jun 27 '08 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

13
29474
by: DarkSpy | last post by:
many c++ compilers including "gcc" have not implemented the "export" keyword, but the comeau compilers made it (just i knew). i want to know about: is it too difficult to implement "export" keyword? if it is, i know the history that is without "export" keyword of C++ compilers with five years (sorry about my poor english :-) ), in five years...
205
10474
by: Jeremy Siek | last post by:
CALL FOR PAPERS/PARTICIPATION C++, Boost, and the Future of C++ Libraries Workshop at OOPSLA October 24-28, 2004 Vancouver, British Columbia, Canada http://tinyurl.com/4n5pf Submissions
9
3000
by: | last post by:
I have a web page written in asp.net that has multiple datagrids on it that would need to be exported to Excel. Each of the datagrids would be a subset of what the datagrid above it was. Thus far, I've had no luck in finding anything to work reliably. Some of the files I've saved (using a radio button click event), will open fine in...
8
2832
by: DC Gringo | last post by:
I have a simple button that should open another window and export a datagrid to an Excel file. I'm getting: "Name 'window' is not declared." What do I need to declare or import? <INPUT ID="Button5" ONCLICK="Button5_Click" NAME="Button5" TYPE="button" VALUE="Export to Excel"> Sub Button5_Click()
3
8018
by: nologin | last post by:
Is it possible to export data exposed by DataView to Excel file for example ? Seba
4
1681
by: Tomek | last post by:
Hi, How could I export data from table or query to excel file in VB.NET? Thanks in advance, Tomek
9
8281
by: TheOne | last post by:
Would anyone please point me to a list of reentrant C library functions? I want to know which C library functions are safe to use inside a signal handler across all platforms. Does GNU C library make few other functions reentrant on Linux platform? I have searched a lot on the web for it but without any success. Man page of signal(2) has...
17
7206
by: Fabry | last post by:
Hi All, I'm new of this group and I do not know if this is the correct group for my question. I have a DLL with its export library (.lib) wrote in Borland C++ 6. In borland everything is OK and I am able to include the lib and use the class that i have exported creating an instance with new etc... I would like to export this class in...
1
6672
by: DennisBetten | last post by:
First of all, I need to give some credit to Mahesh Chand for providing me with an excellent basis to export data to excel. What does this code do: As the title says, this code is capable of extracting all tables and it's data from any given database! I was searching the net for a program like this, but I didn't come accross any (free)...
0
7777
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main...
0
8200
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that...
1
7773
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For...
0
8061
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the...
0
6411
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then...
1
5584
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes...
1
2197
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
1
1297
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
0
1038
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.