Identical classes casting?
Suppose I have two classes A and B. Both are identical (same atributes, methods, etc), but they are named different. There's some safe way, in Java, to cast a B object as an A object? ...
class
Resizing images with GD Library - setting start x & y coordinates
Okay, I'm over my head and fumbling in the dark here. I'm trying to modify a class to crop an image by setting the height, width and starting x & y positions. The class I'm using handles everything but the starting x & y, and try as I might all I can do is blow it up. Can someone help me with this?? the relevant function is listed be...
If I can take a normal pointer to a variable within a class, what's the point of class member pointers?
Take this code: struct mystruct { int var; mystruct() : var(0) {} }; int main() { mystruct ins; int* p = &ins.var; *p = 1; } So what are some concrete really good examples of uses for the class member pointer? int X::*p = &X::data; /* p contains offset */ X object; X *objptr = new X; int i = o...
What is the code : base()
What is the purpose of base() in the following code? class mytextbox : TextBox { public mytextbox() : base() { this.Text = "stack"; } } ...
Can I do this with class objects ?
class xyz{ ... ... }; while(i<n){ xyz ob; ... ... } Do I need to destroy the earlier object before reallocating memory to it? ...
How do you iterate through current class properties (not inherited from a parent or abstract class)?
I know that PHP5 will let you iterate through a class's properties. However, if the class extends another class, then it will include all of those properties declared in the parent class as well. That's fine and all, no complaints. However, I always understood SELF as a pointer to the current class, while $this also points to the curr...
What is the size of a class?
Possible Duplicate: Empty class in C++ class Class1 { char c; }; class Class2 { }; What is the size of Class1 and Class2? In VC6, I got both 1. can someone explain this? ...
Download file from java application
Hi I need some help to download a file from my java application. The URL is "http://my.site.com/UICFEWebroot/QueryOneDateAllCur?lang=ita&rate=0&initDay=11&initMonth=10&initYear=2010&refCur=euro&R1=csv" I try using this code but the result is an empty file URL urlAgg = new URL(address); int lf = urlAgg.openCo...
How to call a selector in a different class
How would this code be different if the method was in a different class? [saveButton addTarget:self action:@selector(saveArray) forControlEvents:UIControlEventTouchUpInside]; ...
Importing my custom class and calling it's method?
I have created a custom class for my Android project called "Sounds" I want to be able to call it from my activity. The contents of my class are as follows: package com.mypackage; import java.util.HashMap; import android.content.Context; import android.media.SoundPool; public class Sounds { private static boolean sound = true; priv...
Pass data between objects in python
I'm new to python and I'm not sure how to pass data between objects. Below is a tabbed program using python and wxwidgets. How would I be able to access the maintxt instance from the GetText method since their in different classes? Thanks. ........ #!/usr/bin/env python import wx class PageText(wx.Panel): def __init__(self, pare...
Create class files with T4 template
Hi, I have 82 procedures that create data tables, and i want to iterate through this tables and dynamically create the following classes for each data table: * The data table contain two columns: Id, Desc. e.g. CountryId, CountryDesc. * Each of the bold items in the example class below is dynamically create based on the data table i am u...
How can I call one method in two activities?
I'm developing an Android project , the main activity well call a method(Ptime.GetDate) which will change a global variable (output) then this activity will print this variable public class calendar extends main_menu { int i=0; /** Called when the activity is first created. */ @Override public void onCreate(Bundle sav...
asynctask in Android
Hi Team! Can anybody tell about the "asynctask" used in android application. Currently I am working on an application where I have to create a Class in which I have to just get the response of any particular URL given. I this particular class I was told to perform this task by making use of "asynctask". I had been getting very quick r...
Dynamically creating classes - Python
Hi folks, I need to dynamically create a class. To go in futher detail I need to dynamically create a subclass of Django's Form class. By dynamically I intend to create a class based on configuration provided by a user. e.g. I want a class named CommentForm which should subclass the Form class The class should have a list o...
Document Listener firing some times but not others...
Hi, this one has been puzzling me for a few days now and I feel that I have barely been able to narrow it down. I am using Java and have a wizard for the user to step through. One of the steps allows the user to select a start time & date and an end time & date to schedule some work. I thought I had the validation on the dates complete...
jQuery Class change not updating until mouse over
I have a menu and each menu item is a span with a class set in css: .newClass {color: red} .oldClass {color:black} oldClass:hover {color:blue;} When you click on a menu item the class is changed with: $(this).removeClass('oldClass').addClass('newClass'); which works fine. When another menuItem is click I change the classes back o...
Utility Classes in Java Programming
Hi All! I am new to Java and I referred regarding my question on the Net but not quite Satisfied. I want to know what the "Utility Class" in Java is? Can anybody please tell me with an Example. Thanks, david ...
config file in php
hi all, i want to create a user defined config file,which contains some variables with constant values, now i want to access those values in many pages of my application.how can use those variables using functions..what is the best way to do this without using classes. ...
Struct v/s Class in C# - Please explain the behavior.
Hello Folks, Could someone please explain the behavior of this class testCompile { /* * Sample Code For Purpose of Illustration */ struct person { public int age; public string name; } static void Main(string[] args) { List<person> L...