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by: TT (Tom Tempelaere) |
last post by:
Hi people
I am wrapping a C dll using PInvoke from C#. I need to wrap the following signature in C
int dma_start( const UCHAR* data, UINT data_length )
The function should start with a DMA operation, and I have to use it from my C# program. I am really unsure what type of marshalling I should use.
The data parameter is a pointer to an array of byte data. This data must not be copied when calling the function. Plus, the .NET...
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by: Tajmiester |
last post by:
Hi, And thanks for any help.
I am having trouble declaring a struct containing strings that can be
Serialized using the following functions. It works, but the strings wont
store the right number of characters, they store one less with a null at the
end! Whats the point in a marshalling as fixed length if it wastes space
with a null! How can i make it marshall the strings as "proper" fixed length
strings, where the full 8 (or 3)...
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by: Motoxcat |
last post by:
Greetings
I am writing some MC++ code to interoperate between a legacy C-languiage dll and C#. I need to specify a callback function to the managed portion for the dll to provide more detailed error reporting. The dll is an embedded database. Since this is error information that may occur at any time, the managed callback needs to be pined for a prolonged period of time. Are there any guidelines on how long a GCHandle or delegate can be...
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by: XYZ |
last post by:
I need to pass the address of a variableto some win32 API functions like
RTLMoveMemory
I noticed some weird behavior when pinning objects and using the handle's
pointer to write data to the memory location.
it seems as if after pinning an object the memory and the object are not
updated at the same time anymore
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by: steve |
last post by:
Hi all,
I want to understand more about how the pinvoke pinning process works.
I'm writing some code that calls DeviceIoControl.
DeviceIoControl provides a generic interface to device drivers.
Its signature is deliberately open-ended so that it can be highly generic.
Refer SDK for more.
I want to access the drive geommetry of an SD-Card via
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by: markb |
last post by:
Hi
My C# app is being called from a callback from an unmanaged DLL. One of
the parameters of the callback is of type BOOL. I am using PInvoke to
marshal this to a (managed) bool. The problem is that no matter if we
pass TRUE or FALSE, the bool is always marshalled as true.
// unmanaged code in dll
typedef bool (__stdcall *BoolCallBack)(short b);
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by: DaTurk |
last post by:
Hi,
I'm coding up an application that has a native c++ layer,
asynchronously calling callback in a CLI layer.
We originally did this with static inline methods in the CLI layer,
but this solution only works with singleton objects. So I have to
explore other solutions.
So beside pinning pointers, I've been looking at GCHandle. I was
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by: d-42 |
last post by:
Hi,
I'm pretty sure I've just got a Marshalling problem, but I'm
completely stumped. If there is a better newsgroup to post this in,
please point me towards it.
First I'm trying to use SendMessage() with WM_COPYDATA to send a
string data between two instances of a program. As part of the
debugging I've written two methods one where a given instance will
obtain its own hWnd and send itself the message, one where it accepts
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by: roche72 |
last post by:
I am having some trouble marshalling data between c++/C#
Here is the C++ code:
---------------------------------------------------------------------------------
typedef struct
{
......
......
}MyChildStruct;
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
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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 most users, this new feature is actually very convenient. If you want to control the update process,...
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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 launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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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
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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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 effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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