All Questions
440
questions
0
votes
0
answers
51
views
Pyinstaller unable to load a DLL dynamically at runtime
I'm building an application that requires loading a software specific DLL at runtime. The application is built using Pyinstaller, but since the DLL must be loaded at runtime (depending on the user's ...
- 679
0
votes
0
answers
30
views
Python call to DLL via CDLL Results in "STATUS_STACK_BUFFER_OVERRUN" Exception
I'm trying to make a call to an (https://www.autelrobotics.com/doc/609/) via a DLL in Python and the app crashes before the call returns. The Windows error logs show it to be a "...
0
votes
1
answer
25
views
Why ctypes.CDLL is assuming long result type even though it's actually is long long?
Consider python code below - it seems that calling .dll's function is assuming long time for some reason (system is windows x64 if it's important).
Why it's doing this? Is there way to disable it? ...
- 424
0
votes
0
answers
31
views
Python ctypes to send "Path" datatype to DLL
I have been learning how to use Python ctypes module to run DLLs created with LabVIEW following the C calling conventions. I've had success with integers and strings, but not with filepaths. The ...
- 1
0
votes
1
answer
101
views
How does Python consume DLL files without needing the import file (.lib)?
I just finished a tutorial on building a DLL library. From the tutorial I learnt that a DLL also has an associated lib file, which the linker will use to statically linked in information to the client ...
- 84
0
votes
1
answer
38
views
How can I print the contents of an address after sending the pointer to a c++ dll from Python?
//The function in the dll is where all I am doing is writing a value to that address:
BOOL test_sizeKey(unsigned short *sizeKey)
{
BOOL rc = TRUE;
*sizeKey = 150;
return rc;
}
My python ...
- 1
0
votes
0
answers
118
views
Unload a dll using ctypes (or other) in python
I'm struggling to unload a previously loaded fortran compiled dll inside a python loop.
One important info : the dll is mine. I’m compiling the dll myself in VS with IFX compiler.
Here is the issue :
...
- 1
1
vote
1
answer
62
views
Cannot set restype of a function of CDLL: ctypes
Let's say, that I have a c++ dll. I have a function GET_LAST_MESSAGE, which returns char*. I cannot get the message from it, using python, because python suppose that this function returns long int.
...
- 45
0
votes
1
answer
55
views
Retrieving data via old DLL in python
I try to use an old DLL from 2001 in Python and there is almost no documentation left.
After some work I could get some function running. But I cannot receive data. My knowledge of DLL and pointers is ...
- 111
1
vote
0
answers
61
views
I want to import all the functions in C program from Python. I got OSError: [WinError 193] %1 is not a valid Win32 application
c file; Lets say func.c
#include <stdio.h>
int display(char* str, int age) {
printf("Name %s age is %d",str,age);
return 0;
}
In command prompt: gcc -fPIC -shared -o func.so ...
- 11
0
votes
0
answers
35
views
Import DLL | Ctypes
I am trying to import the functions of the DLL comes in the package XFLR5.
https://sourceforge.net/projects/xflr5/files/6.59/
I have 2 questions.
The function names look very different to what is ...
- 354
0
votes
0
answers
57
views
Fail to release the memory after 2D array multiplication with python ctypes
I tried to call functions in DLL with python ctypes module. The functions perform 2D array multiplication successfully and created by C. The following source code would be packaged into "...
- 1
0
votes
0
answers
53
views
Access violation with ctypes
I am trying to use a DLL within a python script for a GUI using Tkinter.
I get this error:
write_flag=dfd.newp_usb_send_ascii(ctypes.c_long(deviceID),ctypes.c_char_p(cmd),ctypes.c_ulong(lengt))) ...
- 3
0
votes
1
answer
119
views
how to passing arrays of strings from fortran dll to python with ctype
I want to read a file with a fortran dll using ctype.
the structure of my file is:
AX
BX
… .
4.0 5.0 6.9
1.2 8.0 7.0
… … …
for read the file , i have PATH to pass to dll fortran and get a ...
- 11
0
votes
0
answers
254
views
Ctypes LoadLibrary gives FileNotFoundError -- do you have to include header files when loading a C++ DLL in Python with ctypes?
I am attempting to load two C++ DLLs in a Python program using ctypes, however, one of the modules throws an error despite the other loading completely fine. Here is the code:
import ctypes
os....
- 53