Question: How can I check the user ID from a Delphi Application?I need to allow only some users access to certain menu items, or limit the option available to users

Question: I have a project that exists on a NT 3.51 machine. When I copy all source code, etc. to my Win95 PC, Delphi does not load the main form.

Question: I want to create paradox-type tables at runtime, which I am generally doing in this way:Table1.FieldDefs.Add(‘IDnum’, ftInteger, 0, False)….Table1.CreateTableHowever, there seems to be no FieldType for an auto-increment number

Question: How can I access my comport? How can I send bytes to the datatransfer pin? I’m using Delphi 1.0I’ve tried writecomm and transmitcommchar (and I’ve opened the port with

Question: Please examine my code and tell me what I am doing wrong!This is the first part of my program:#include #include class LinkedLst{ public: LinkedLst(); //Constructor void AddToFront(int Value); //Add

Question: I am puzzled at the way in which the assignment operator is overloaded in C++. Would you please show an example as to what efficient code for overloading this

Question: Does Delphi support ActiveX? If so, do I need something extra to run ActiveX controls in Delphi? Answer: As long as the OCX is registered (which you can do

Question: How does one convert a double to an int? Is there a function like floor that actually returns an int? Answer: There are many things you can do to

Question: I am trying to write a program that provides a constructor that’s capable of using the current time from the time() function declared in the C standard library header

Question: I’m a beginner in C programming. I have Microsoft Visual C++ 4.0.I’ve read the book Programming with C by Byron Gottfried.Unfortunately, no matter which simple program I try to

Question: Why do I get with the following program, this error: general protection exeption, 0x215f:0x1ef3timer(1) 0x215f:0x1ef3 Processor fault.Program (very small):#include #include int get_value (int _value);void main (void){ int _time=0; int

Question: How can I dynamically declare a 2D array and pass it as a parameter to a function?Here’s an example of what I’m trying to do:#include #include #include const SIZE

Question: Can static variables (of a class) be accessed and modified by any member function (static/otherwise) of that class?Also, what are the typical instances of having a static function in

Question: I wasn’t able to find out what all the command line switches for dbexport do. The only ones I found were -o and -c.Is there a way to export

Question: What happens to dangling pointers in Java? Supposedly there is garbage collection, but when is it performed? From what Ihave read, it seems really easy to have persistent danglingpointers

Question: I would like to see examples of overloading the inserter and extractor operators. Answer: class MyClass{public: void operator

Question: Is it reliable to mix cout statements withfprintf statements in the same C++ code ifcout.sync_with_stdio() is used? Does thiscreate one single buffered file I/O stream? Answer: In general, there

Question: I have two enumerated types: enum suit_type{club,diamond,heart,spade} and enum rank_type{ace,two,…,queen,king}. In structure CARD, I have the variables suit_type suit and rank_type rank. In class PILE, I have a private

Question: I would like to know what virtual function tables are. When one refers to vtables, is it a virtual function table that is implied? Answer: In short, vtables are

Question: If the destructor is called from a new’ed object (a->A::~A()), is the object’s instance deleted? Answer: No. A destructor is a special member function of a class that is

Question: We are getting an error message that says a function fromwithin a class C cannot allocate instanceof type C because one of the virtual functions(the one we wrote) is

Question: Is there a standard method/operator in C++ analogous to standard C’s realloc() function that enables resizing of dynamic memory allocated by new operator? Answer: There is no standard call

Question: This is legal (safe) and works with the compilerenvironment I am using: CMyObject *ptr = NULL; delete ptr;However, I get a run-time error (assert) whenI use the array delete

Question: Do you know of a good tool for getting performance data on a pure C++ program?I need a tool that indicates sections of code thatuse the most CPU/memory, etc.

Question: I have a templated class A that defines two operator =, and a templated class B : public class A which should inherit the two virtual a::operator = I

Question: Background: Digital UNIX 3.2g, Alpha platform, latest GNU.From the FAQ, I know that you are supposed to declare static member variables externally from the declaration and inonly one place.

Question: I defined a class A, which has three constructors:A(), A(int), A(int, int)Can I just define the behavior in one constructor, say A(int, int), and let the other two constructors

Question: Is there a way to do some macro magic with members of a given class sothat when a designated name is called, itinvokes the macro that called the class

Question: I am a C/C++ programmer who is moving from the beginner to intermediate level. My question is, how does one move successfully from the beginner to intermediate level? Answer:

Question: I have written a program with two classes. Each uses the other within it and contains pointers to the other. However, this means that the first class encountered by