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by: pablo |
last post by:
Dear NewsGroupers,
I am relatively new to OOP and cannet get my head around this problem.
I have two classes. Class Child extends Parent.
There is no constructor for the Child class. So when I create a child object
the constructor for the parent object is called. That works fine.
But now I have the problem that I want to add an already existing Parent
object to create a new Child object. How can this be done?
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by: Michael Winter |
last post by:
In an attempt to answer another question in this group, I've had to resort
to calling the DOM method, Node.removeChild(), using a reference to it
(long story...). That is, passing Node.removeChild.
In Opera (7.23/Win), the call appears to do nothing - the node remains -
but no errors are shown. In Netscape (7.0/Win), an exception results.
On IE (6.0/Win), the node is removed.
Strangly, if I pass another function reference, say...
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by: marcadonis |
last post by:
Hi!
Does anybody know of a way that I can keep a reference to an object
that I can then reuse? I tried various approaches using navigator, but
these all fail in an iframe due to premission problems.
For e.g.:
navigator.stuff = 5;
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by: Earl Teigrob |
last post by:
I did a ton of searching to try and find a simple solution to this issue and finally wrote my own, which I am sharing with everyone. In my searching, I did find a very complete and robust solution at
http://weblogs.asp.net/asmith/archive/2003/09/15/27684.aspx
but it was far more complex then I needed. (I got lost trying to figure it all out). Therefore, here goes my simple "web dialog box with parent event handler fireing" solution.
...
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by: Charles Law |
last post by:
For some reason, when I click the X to close my MDI parent form, the action
appears to be re-directed to one of the MDI child forms, and the parent
remains open. I am then unable to close the application.
What should happen, is that the main MDI form should close, taking the child
forms with it. There is code to loop through the child forms, remove the
controls on each of them, and then close the form, but this code should
execute only...
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by: Alex |
last post by:
Is there a way to reference the "parent" object that creates a child object
from within the child object? Or do I have to pass a reference to the parent
object to the constructor of the child object so that the child object
"knows" who is creating it?
ie: how would I do something like this:
Object1 parent = new Object1();
parent.CreateObject2() // object1 creates a new object called object2
object2.parent // I want to...
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by: Goran Djuranovic |
last post by:
Hi all,
Does anyone know how to declare a variable in a class to be accessible ONLY from a classes instantiated within that class?
For example:
************* CODE *****************
Public Class Parent
'*** HOW TO DECLARE IT ***
Dim Age As String = "1/1/2000"
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by: KA NMC |
last post by:
I have a treelistview that is populated with parent child. What I'm trying to do is when the user clicks on the parent place the subitems text into a textbox
TextBox1.Text = treeListView1.SelectedNodes(0).SubItems(4).Text & ""
Which works fine when I click on a parent, But when I click on the first record child I get error Object Reference not set to an instance of an object.
when I click on the second record child I get specified argument...
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by: vunet |
last post by:
I am still not clear about how to reference an object within another
object to pass first object to a function:
var Parent = {
myFunc : function(){
alert("Parent = "+this)
},
Child : {
//how to get reference to Parent?
myChildFunc : function(){
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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: 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 project—planning, coding, testing, and deployment—without 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 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: 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: 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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