Pointers In Delphi
Every data we use in an application is stored somewhere in the computer's memory. And a Pointer is a variable that stores a address of memory piece where we store data, like in Delphi "a string is really just a pointer" or "an object is really just a pointer" or "event handler such as OnClick is actually a pointer to a procedure". They allow direct access to memory, enabling complex data structures to be built and navigated. The advantages are: We can set that memory size as per our requirement In case of copy value of a variable from one to another we just need to change a pointer to point to a different address of memory which saved lots of time When we use Pointers The most common use for pointers in Delphi is when calling Windows APIs. Windows API functions use a number of data types that may be unfamiliar to the Delphi programmer. Most of the parameters in calling API functions are pointers to some data type. Most of the t...