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by: Carlos Guzmn lvarez |
last post by:
Hello:
I'm trying to execute a function of a unmanaged dll using PInvoke, i
have definied the function as:
public static extern int isc_dsql_prepare(
int status_vector,
ref int trans_handle,
ref int stmt_handle,
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by: phoenix |
last post by:
Hello,
I've got a design question. I need to keep track of some variables and I am
planning to put them inside a class or struct. Basically I'm talking about
10 bools, 20 ints and 2 arrays of ints. The size of the arrays would depend
on some external value (going from 0 to around 1000 max). I would have an
array of max 255 of these classes/structs (in most cases it will be less
then 5 however)
Since there's no real business logic my...
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by: Kevin |
last post by:
Hi al
I have an interesting question.... I am working witha Win API this is the Function
Public Declare Function EnumJobs Lib "winspool.drv" Alias "EnumJobsA" (ByVal hPrinter As Long, ByVal FirstJob As Long, ByVal NoJobs As Long, ByVal Level As Long, pJob As Byte, ByVal cdBuf As Long, pcbNeeded As Long, pcReturned As Long) As Lon
Which I got from the API viewer that comes with VB 6. I have tried to convert it to the following
...
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by: Xandau |
last post by:
hello all,
i wotk with java every day but last time i have interested in C#.
everything goes great except one thing...
in java everything is a reference (except plain types) so i thought
that in C# will be the same - i was wrong....
or if in C# is the same as in java please tell me ;-)
I have an ArrayList names ls :
// Point is a class System.Draw....
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by: gmccallum |
last post by:
General Info:
A struct is stored on the stack and a class on the heap.
A struct is a value type while a class is a reference type.
Question:
What if a struct contains a string property(variable). The string would
be a reference type being contained in a value type. Would this filter
up and cause the stack to now be a reference type placed on the heap
or would it still be on the stack with a pointer used internally to point
to a...
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by: Brian |
last post by:
I am "learning" C# and have run into a problem that, though I can work around
it, I would like to know what the *right* way to handle the issue is.
I have created an "Info" struct and assigned certain default values to it.
I have assigned this struct to a TreeView node via the Tag field. In my
"AfterSelect" processing call, I am casting the node tag value to my "Info"
struct. When I look at the fields they are set to the default values...
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by: Kalpesh |
last post by:
Hello All,
Please help validate this design problem
Assume that I have several entities in my project (eg Supplier,
Customer etc).
All of them save several common properties - name, address, city,
state, zipcode etc
I thought of making a base class - BusinessEntity (with all of the
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by: heddy |
last post by:
I have an array of objects. When I use Array.Resize<T>(ref Object,int
Newsize); and the newsize is smaller then what the array was
previously, are the resources allocated to the objects that are now
thown out of the array released properly by the CLI?
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by: ravi.sathyam |
last post by:
Hey,
So say I have a sockaddr_in struct stored in a packet which I receive
from my udp socket.....and it is stored within a certain offset into
this packet (which is basically a char array). Currently, the first
four bytes store an ID information and the next sizeof(struct
sockaddr_in) bytes store this struct.
Now, say that i declare a struct sockaddr_in temp_addr variable...would
the following lines be valid??
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by: Milux |
last post by:
Hi All,
This question has to do with interface design. Suppose I have an translation
tool. It can translates structs from type "general" to other types and then
does some processing.
Example:
typedef struct
{
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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: 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: 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 choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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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 projectplanning, coding, testing, and deploymentwithout 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: 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 Dupr who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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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: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: bsmnconsultancy |
last post by:
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