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About 365 results for
ctypes
- Page 1
ctypes restype error!
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
… the code [CODE=python] #import
ctypes
module import
ctypes
as ct #get BOOL C++ value from
ctypes
from
ctypes
.wintypes import BOOL #Loading the…
Re: Ctypes question
Programming
Software Development
15 Years Ago
by vegaseat
…[code=python]# using the module
ctypes
you can access DLLs written in C/C++ #
ctypes
converts between Python types and C…and VB may use stdcall, import with windll # module
ctypes
is built into Python25 and higher # look under…
ctypes
in the Python manual from
ctypes
import * # as an example let's…
Re: Ctypes data equivalent to C++ BOOL??
Programming
Software Development
14 Years Ago
by pmf
A word of warning, be careful using
ctypes
.wintypes.BOOL as a C++ bool equivalent. From the …documentation at [url]http://epydoc.sourceforge.net/stdlib/
ctypes
.wintypes-module.html[/url] BOOL is described as a c_long…currently having problems with memory access violations when passing a
ctypes
.wintypes.BOOL to a DLL and I wouldn't be…
Ctypes question
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
I have been trying to learn
ctypes
so as I can call C++ DLLs in python and … is my code for Loading the DLL : [CODE=python] import
ctypes
as ct #load DLL dll = ct.cdll.test_dll print dll…
Re: Ctypes question
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
I read somewhere an article on
ctypes
and made life easier. However, I still don't know where to use pointers and where to use other
ctypes
variables like c_char, c_int etc. Anyone to help?
Ctypes data equivalent to C++ BOOL??
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
What is
ctypes
data for BOOL? I mean in C++ to
ctypes
we have: int--> c_int float--> c_float what about BOOL?
ctypes - pointer to array of doubles?
Programming
Software Development
14 Years Ago
by trayres
… can't...figure out how to make it work with
ctypes
. I'd be trying to retrieve the values, that start…() gives me an error. I've only been working with
ctypes
for two days, and am stuck. Any help is really…
Re: Ctypes question
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
…. Can someone give me a start. I cannot find the
ctypes
variable equivalent of BOOL, QWORD etc. And also how to…
Re: Ctypes question
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
I have failed to re-write the function in python because I don't know how to convert QWORD offset, and BOOLto
ctypes
. Someone help me please!
Re: Ctypes question
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
Anyone who knows QWORD, DWORD and BOOL
ctypes
Equivalents. I find c_int, c_float etc but not the Equivalent above!
Re: Ctypes data equivalent to C++ BOOL??
Programming
Software Development
15 Years Ago
by Stefano Mtangoo
I got it! [CODE=python] from
ctypes
.wintypes import BOOL #then you can use BOOL anywhere in your code [/CODE]
ctypes and speed
Programming
Software Development
14 Years Ago
by OffbeatPatriot
… by calling a method written in python, then I remembered
ctypes
. So I wanted to ask, is PyObject_CallObject(my_callback, NULL) any…
Re: ctypes and speed
Programming
Software Development
14 Years Ago
by OffbeatPatriot
Do you know what the over head is? Also, using the
ctypes
module, or anything really, can I get a C function pointer?
Re: ctypes and speed
Programming
Software Development
14 Years Ago
by OffbeatPatriot
"Do you know what the over head is?" I think I'll rephrase that. I'm fairly new to learning about the mechanisms of what makes python work so maybe this is a stupid question, but if a PyObject is basically a
ctypes
wrapper for a c function is the python interpreter ever used when I call PyObject_CallObject on it?
Re: ctypes help
Programming
Software Development
14 Years Ago
by Tech B
… pointers on google, would something like this work? [CODE] graydata =
ctypes
.cast(graydata,
ctypes
.POINTER(
ctypes
.c_ubyte)) [/CODE]
Re: ctypes help
Programming
Software Development
14 Years Ago
by Tech B
… up the stack. "([URL="http://old.nabble.com/
ctypes
-with-Compaq-Visual-Fortran-6.6B-*.dll-(Windows-XP),-passing… up the stack."([URL="http://old.nabble.com/
ctypes
-with-Compaq-Visual-Fortran-6.6B-*.dll-(Windows-XP),-passing…
Re: ctypes help
Programming
Software Development
14 Years Ago
by The_Kernel
I don't think you can just dump a python array into the dll's function. Try initializing graydata like this: [code] graydata_type =
ctypes
.c_ubyte * (w * h) graydata = graydata_type()[/code]
Re: ctypes help
Programming
Software Development
14 Years Ago
by Tech B
… sure it works. Bascialy what I do is: [CODE] form
ctypes
import * fd = windll.LoadLibrary('fdlib.dll') import Image im = Image…
Passing pointer to array of structures in ctypes
Programming
Software Development
13 Years Ago
by runge_kutta
…;z",
ctypes
.c_double), ("a",
ctypes
.c_double), ("e",
ctypes
.c_double), ("r",
ctypes
.c_double), ("time",
ctypes
.c_double), ("…
Re: Passing pointer to array of structures in ctypes
Programming
Software Development
13 Years Ago
by Gribouillis
I think you create an array like this [code=python] arr = (pyMyStructure * 4)() [/code] but I'm a beginner in
ctypes
. Perhaps you can pass [icode]
ctypes
.pointer(arr)[/icode] to your function.
Re: Passing pointer to array of structures in ctypes
Programming
Software Development
13 Years Ago
by runge_kutta
Hi! Yeah Gribouillis - the solution I ended up with was along those lines: [CODE] recordPointerType = structures.pyDoubleMeasuresRecord * 4 record = recordPointerType() recordPointer =
ctypes
.pointer(record) [/CODE] I liked yours better, so that's what ended up in the code. Thanks Gribouillis!
Python and ctypes, an exercise
Programming
Software Development
13 Years Ago
by Diomedes
… implementing a simple, singly linked list in python using
ctypes
[code] from
ctypes
import * class linknode(Structure): pass linknode._fields_ = [ ("… linked_list(): """ our own linked list based on
ctypes
""" head_node = None def add(self, int_data): …
using ctypes to access a dll created by scons
Programming
Software Development
15 Years Ago
by i_saw_some
… from the cpp file? Thanks! -Vic [ICODE] from
ctypes
import * c = cdll.LoadLibrary("hello.dll") …gt; print c.rr File "C:\Python25\lib\
ctypes
\__init__.py", line 361, in __getattr__ func =… self.__getitem__(name) File "C:\Python25\lib\
ctypes
\__init__.py", line 366, in __getitem__ func = …
Re: Python and ctypes, an exercise
Programming
Software Development
13 Years Ago
by TrustyTony
…*name; struct cell *next; } cell;The straightforward translation into
ctypes
code would be this, but it does not work: >… available in the class statement itself. [U]In
ctypes
, we can define the cell class and set the…later, after the class statement: [/U] >>> from
ctypes
import * >>> class cell(Structure): ... pass ... …
Re: Python and ctypes, an exercise
Programming
Software Development
13 Years Ago
by TrustyTony
… post) in objects the limitation still stays same [CODE] from
ctypes
import * import sys, random class linknode(Structure): pass linknode._fields_…;, c_int), ] class linked_list(): """ linked list based on
ctypes
implements __iter__ and __len__ methods and add method to putting…
Re: Python and ctypes, an exercise
Programming
Software Development
13 Years Ago
by leegao
Hi, [code] from
ctypes
import * from see import see import sys class linknode(Structure): … linked_list(): """ our own linked list based on
ctypes
""" head_node = None def add(self, int_data): node_to_add…
how to get the interface from win dll by ctypes
Programming
Software Development
16 Years Ago
by newharvar
hi,everybody I am study
ctypes
,and got a big trouble,I googled lots a pages but get no usefull info. i want to know how to get the interface from winxp by using
ctypes
, for example: I want to use ActiveDesktop 's interface by using
ctypes
,but i don't know how to do,can anybody help me? thanks alot~
Re: Python and ctypes, an exercise
Programming
Software Development
13 Years Ago
by TrustyTony
Here my analysis of the problem [CODE] from
ctypes
import * class cell(Structure): pass cell._fields_ = [("name", …
Accessing ctypes array object data... help!
Programming
Software Development
13 Years Ago
by convoluted
…figure out how to access data I input into a
ctypes
array object. This is used with a hardware SDK… data format at all. Here's the code: [CODE] from
ctypes
import * MsgDataType = c_uint8 * 8 msg = MsgDataType() msg[0] = …;[/I] Typing "pt" outputs: [I]<
ctypes
.LP_c_ubyte_Array_8 object at 0x00F58A80>[/I] I've also tried…
accessing functions from a dll using python ctypes
Programming
Software Development
11 Years Ago
by dilbert_here00
…to access some functions from a dll using python
ctypes
, but not sure how to pass pointers to… items filled into the array. I tried the following: from
ctypes
import * device_list_size = 5 device_list = [] dll = cdll.LoadLibrary…: _type_ must have storage info I am new to
ctypes
so not sure if this is correct, I would …
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