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by: Nobody You Know |
last post by:
I need a member variable in class A known within an instance of class
B, even though B does not instantiate A.
My solution was to make the member variable private static, and create
a public static accessor function that returns the variable's value. I
reference this function in class B as ClassA::GetValueOfVariable().
Although this...
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by: Roger Leigh |
last post by:
The C++ book I have to hand (Liberty and Horvath, Teach yourself C++
for Linux in 21 Days--I know there are better) states that "static
member functions cannot access any non-static member variables".
However, this doesn't seem entirely correct. It also doesn't mention
whether static member functions can access protected and private
member...
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by: Jian H. Li |
last post by:
Hello,
What's the essential differences between the two ways of "class::member"
& "object.member"(or object_pointer->member)?
class C{
public:
void f() {}
int i;
};
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by: MacFly |
last post by:
Hi everyone,
HRESULT WINAPI DirectPlayMessageHandler( PVOID pvUserContext, DWORD
dwMessageId, PVOID pMsgBuffer)
I want that method to be class member method so it could have access to
class variables, but don't know how to do it ?
I still receive errors when I try to use it.
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by: gustav04 |
last post by:
hi all
i have a question:
what is the difference between a c-function and an c++ class method
(both do exactly the same thing).
lets say, i have a function called print2std() and a class called CUtils
with a static method called print2std()
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by: baumann |
last post by:
hi all,
to implement a singleton class, one has define a static function in the
singleton class,
class A{
public:
static A* getInstance()
{
static A a;
return &a;
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by: kuvpatel |
last post by:
Hi
I want to refer a class called LogEvent, and use one of its methods called
WriteMessage without actually having to create an instance of Logevent.
I have tried using the word sealed with the class and this works but I would
also like to know of other ways to do this.
Also are there any performance implacations of using sealed?
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by: ypjofficial |
last post by:
Is there any possibility of invoking the member functions of a class
without creating an object (or even a pointer to ) of that class.
eg.
#include <iostream.h>
class test
{
public:
void fun()
{
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by: titan nyquist |
last post by:
I have a class with data and methods that use it. Everything is
contained perfectly
THE PROBLEM: A separate thread has to call a method in the current
instantiation of this class. There is only ever ONE instantiation of
this class, and this outside method in a separate thread has to access
it.
How do i do this?
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by: .rhavin grobert |
last post by:
i have (do try to have?) the following...
& = breakpoints in debugger
// ----------------------------------------------------------------
// cx.h
class CX {
public:
CX(CX* pcx = NULL);
virtual ~CX();
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language...
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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. ...
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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...
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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...
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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...
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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...
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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: 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...
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