Question: How can I call the operator= of the base class from the operator=in the derived class?The data member in the base class is a private data member. I want

Question: What is the difference between calling yield() and sleep()? Also, in what instances would you call either method? Answer: The Java platform uses the multithreading facilities of the host

Question: I’m a beginner in Java. I’ve tried two different applets now (one of which I borrowed from another site), both of which involved text fading and color changing. I

Question: Is it possible to have more than one class in the same file ? Answer: Yes. The file Foo.java may contain several class declarations, but amongthem must be a

Question: Can you tell me how to change the background color of an applet from the normal grey to white? I would greatly appreciate it. Answer: Try putting the line:

Question: I need to be able to move the caret in my memo field back to the begining of the field. Any idea how I do this? Answer: Try this:Memo1.SelStart(0);This

Question: 1. I developed an application, but after running for about one hour, a message error: “Insufficient memory to do the operation” occurred. The error did not cause the application

Question: I am using a DBgrid. I have defined two NEW Persistent fields as lookupfields. In the Columns editor, I added them to the grid display. Those two fields are

Question: I have 10 .wav files that I want to play in a loop.If I make the mmplayer wait property true, I suffer from control failure during the loop time.I

Question: I am using a simple grid with names and numbers, and I have the fields set as required in the database. I would like to know how to trap

Question: I am creating numerous threads on-the-fly in Delphi 2.0. I create them suspended. The question is: How do I make the threads go away? I’ve tried Free, Terminate… nothing

Question: I’m using Delphi to do a client-server application in which all the lines I get from a socket I send to a TMemo in my form. I want that

Question: Do you know how to create a flat, non-3D combo box with only a thin black border? Setting CTL3D to False doesn’t seem to have an effect on the

Question: I want to be able to filter records in a table based on criteria in, say, three combo boxes on a form. Answer: If you have indexes on those

Question: How do I re-size the buttons, etc. on my forms when the resolution changes? If I create something in Delphi at a high resolution and run it on a

Question: I’m using the Winexec command and trying to use a string as the argument, but Winexec takes only a Pchar as its argument. I can’t figure out how to

Question: How can I build a program that I can run on a computer that has no Borland Database Engine?Or how can I make a program to install BDE? Answer:

Question: What is the difference between cout

Question: What is the C++ equivalent to _getch()? I need to have program control immediately after any keypress in a DOS-based program. Answer: Unfortunately there is no specification in the

Question: How can I turn a text string into an integer? Answer: You can convert a string to an integer by using the atoi function. For example:void foo (){int i

Question: What is the best way to manipulate strings in C++? Answer: Here is an example.#include void foo (char *instring){ // Declare char array big enough to read in input

Question: How can one do 64-bit or larger math calculations in C++? Do you know of a free class or class library that supports large scalar math? Answer: There are

Question: How can I write and delete individual lines of a text file?Also, how can I bubble-sort the whole text file alphabetically? Answer: There is no support in thelanguage to

Question: I have a class with multiple parents. In my copy constructor, should I invoke the parents’ copy constructor or their default constructor? Answer: In all but the rarest of

Question: When I run the following program:#include main(){fstream printer1;printer1.open(“prn”, ios::out);printer1

Question: How do I send the output of my program to the standardprinter installed in Win95 or NT?Is it possible using the

Question: I’m anxious to know why my program is notdisplaying the data, yet it compiles perfectly.I want to read this struct; in particular: age. Ihave two sets of code that

Question: How are Virtual Functions implemented in C++ ? What is a virtual table? Answer: Let me start by saying that the C++ language definition does not impose any implementation

Question: I am wondering how Visual C++ implements class templates. The code below is a simple stack class template that can take all the simple data types (char, int, float,

Question: I have an account with a Web space provider which includes a virtual FTP area.I’m trying to write a perl program that, when run, will copy all files from