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by: David Sobey |
last post by:
Hi everyone
I'm having huge difficulties overriding a virtual function with a function
that returns a covariant type. I'd be grateful if someone could show me some
code where this is done:
- A class BaseClass is declared with a function me() that takes no arguments
and returns itself, or a pointer or reference to itself.
- A derived class...
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by: Tony Johansson |
last post by:
Hello Experts!
I want to create a virtual clone but I'm not sure if this is the wright way.
Can somebody tell me where I have made error in the code.
I get some compile error in this code also.
Which functions are correct or which have to be modified
class Base
{
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by: scoobydoo |
last post by:
Hello,
I am trying to implement ICloneable's Clone() function, using
Serialization. However, my code causes an exception.
I have a class derived from TreeNode called "Node1".
In Node1, I have implemented Clone() using serialization.
When I call the Clone() function, the following exception is thrown at
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by: Richard |
last post by:
I need a deep clone of my derived TreeNode class.
Can anyone help me writting a clone() override that will do this?
I've seen examples like this,...
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by: Amil Hanish |
last post by:
I have two classes that I have implemented ICloneable. From my top-level
class, how to I clone the base class values: See "how do I clone the base
class values" below. Since Clone returns an object, what do I assign it to
in my derived class?
public class Base : ICloneable
{
....
public object Clone()
{
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by: Steve Teeples |
last post by:
I have TreeNodes in a TreeView, each contains unique data in its Tag section.
I am trying to 'clone' a TreeNode and then modify the tag data of the cloned
TreeNode. What I am seeing is that by modifying the Tag data of the cloned
TreeNode the original TreeNode's Tag data is also being modified with the
identical change.
Does the clone...
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by: bclegg |
last post by:
Hi,
When I implement the example code it errors with
'No parameterless constructor defined for this object.'
experimenting with dim o as object = mytreenode.clone() gives the same
error.
The example code is:
Private Sub Button1_Click(ByVal sender As Object, ByVal e As
System.EventArgs) Handles Button1.Click
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by: David |
last post by:
Hi, I've been working with TreeView for ASP.NET. I've had several puzzling
difficulties with it. For example I can write an application that works
fine programmatically adding TreeNode objects to a TreeView. If I try to
derive a class as follows
public class MyTreeNode : TreeNode
{
}
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by: woessner |
last post by:
I have a lot of classes which derive from a common base class. I want
to be able to clone objects of these types so I have given the base
class a pure virtual clone method. The derived classes all have
complete copy constructors so the cloning process will consiste of
"return new Derived(*this);". Here's the setup:
struct Base
{...
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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: 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...
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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: 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: 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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