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by: Yasutaka Ito |
last post by:
Hi folks!
I have a BaseForm class that inherits System.Windows.Forms.Form. It has a
property, whose value I need supplied by the class that inherits it. The
BaseForm usees the value supplied into this property in its Load event.
So, I gave the BaseForm and the property 'abstract' modifier, and put the
implementation of the property in the inherited class; say MyForm. However,
when I did this, I no longer can open MyForm in the design...
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by: Dev |
last post by:
Hello,
Why an Abstract Base Class cannot be instantiated ?
Does anybody know of the object construction internals ?
What is the missing information that prevents the construction ?
TIA.
Dev
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by: Simon Bond |
last post by:
In C# we can go:
<foo.cs>
// Create a serializable class
public class Foo : ISerializable
{
public void GetObjectData(SerializationInfo info,
StreamingContext context)
{};
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by: Andreas Poller |
last post by:
Hello,
I have the following problem:
I have a class deriving from ICustomTypeDescriptor:
public __gc class TPropertyBag : public ICustomTypeDescriptor
{
private: ...
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by: Primoz Gustincic |
last post by:
I'm explicitly implementing an interface defined in assembly A.
public __gc __interface IPop
{
Void GetPop();
};
public __abstract __gc class CPOP : public IPop
{
private:
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by: julian_m |
last post by:
I'm having problems with include. I wrote a small example which shows
what's going on...
I should say that the problems started after I moved to a shared
server. All was working fine in my local server...
file test.php
---------------------------------------------------
<?php
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by: Bruce |
last post by:
public ref class GpsDevice abstract
{
/* Please note GarXface4::GpsDevice* is in a different namespace
from this one and GarXface4::GpsDevice is an unmanaged class */
virtual GarXface4::GpsDevice* GetDevice() = 0;
};
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by: Christopher |
last post by:
If I have an generic interface, but _also_ have the implementation for
it and want to use that common implementation in my derived classes,
what method does that leave me to make pure virtual such that my
generic interface class cannot be instantiated?
Do you make the destructor virtual?
Do you move constructors to private?
// What do I make pure virtual??
AbstractClass
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by: jainchar |
last post by:
hello
i m in trouble that my project is in vc++ with mfc.my program giving the error that
error c2259:"CException" cannot instantiate abstract class.
when i remove this error then my project is giving the error in file afxres.rc .according to the error when i remove it and compile or debug the project then this can't save.so what should i do.please help me and can somebody give me the guideline that what is the afxres.rc file.
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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: 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:
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...
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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: 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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