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by: Christian Engström |
last post by:
When I compile the below program with Microsoft Visual C++ version 6, I
get the results I expect, which is that the program should write out
base()
derived()
base()
derived(derived)
When I try to compile it with gcc, I instead get the compiler error message
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by: Christian Engström |
last post by:
When i compile the program listed below with gcc version 3.3.1 (MinGW on
Windows XP) I get the following result:
Calling 'func(d)':
'base' copy constructor
Calling 'func(*d_handle)':
'base' copy constructor
Calling 'func(d_handle)':
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by: hazz |
last post by:
The following classes follow from the base class ' A ' down to the derived class ' D ' at the bottom of the inheritance chain.
I am calling the class at the bottom, "public class D" from a client app with;
D m_D = new D(tkn);
public class A : MarshalByRefObject
public A () <---------------------
public class B : A
public B () <----------------------
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by: John B |
last post by:
Hello
I want to create a set of controls that have some common methods and
properties. I was thinking that I should subclass the UserControl class and
add these common features there and then base all my custom controls on this
new MyUserControl Class. Is this the way to go?
The MyUserControl would not actually have any UI component and should be
abstract I think. Does this mena that I should not create the control by
just selecting...
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by: Larry Woods |
last post by:
I have a method in my base class that I want ALL derived classes to use.
But, I find that I can create a "Shadow" method in my derived class that
"overrides" the method in my base class. Can't figure out what attribute to
put on the base class method to prevent this.
TIA,
Larry Woods
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by: Taran |
last post by:
Hi All,
I tried something with the C++ I know and some things just seem
strange.
consider:
#include <iostream>
using namespace std;
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by: rbg |
last post by:
I am using derived tables to Page data on the SQL Server side.
I used this link as my mentor for doing paging on the SQL
Serverhttp://msdn2.microsoft.com/en-us/library/ms979197.aspx
I wanted to use USER PAGING, thus I used the following code:
CREATE PROCEDURE UserPaging
(
@currentPage int = 1, @pageSize int =1000
)
AS
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by: rbg |
last post by:
I did use query plans to find out more. ( Please see the thread BELOW)
I have a question on this, if someone can help me with that it will be
great.
In my SQL query that selects data from table, I have a where clause
which states :
where PermitID like @WorkType
order by WorkStart DESC
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by: RoseM |
last post by:
Hi again,
I could use some help and have not been able to come to grips with what I need to do to make this work.
I have a table of theories and votes and I want to return the percent to total of 'yes' votes. Here's what I have so far, which doesn't work:
SELECT Count(tentries.vote) AS CountOfvote,count(tentries.theory) as countoftheory
FROM tentries
GROUP BY tEntries.vote, tentries.theory
ORDER BY tEntries.vote,tentries.theory;
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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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 synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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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...
|
by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
|
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: 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 Dupré 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: 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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