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Custom Routines (C++/CLI and Delphi Prism Cross Reference Guide)

By Mike Prestwood

C++/CLI versus Delphi Prism: A side by side comparison between C++/CLI and Delphi Prism.

Language Details

Language Details is kind of a catch all for stuff that didn't make it into language basics nor any other category.

Custom Routines

[Other Languages]

Languages Focus

For non-OOP languages, a custom routine is a function, procedure, or subroutine and for pure OOP languages, a custom routine is a class method. Hybrid languages (both non-OOP and OOP) combine both.

[Not specified yet. Coming...]

Delphi Prism: method, procedure, function

In Prism, everything is within a class (just like with C#, VB.Net, and Java). So you create class methods using the method keyword. Alternatively, you can use procedure or function if you want the compiler to enforce returning or not returning a value.

[function/procedure] RoutineName : ReturnType;

As with C++, your custom routine must come before it's first usage or you have to prototype it in the Interface section.

Syntax Example:

method Form1.IntroduceYourself;
begin
  MessageBox.Show("Hello, I do not have a name yet.");
end; 
 
procedure Form1.SayHello(pName: String);
begin
  MessageBox.Show("Hello " + pName);
end;

function Form1.Add(p1, p2 : Double): Double;
begin
  Result := p1 + p2;
end;

Delphi Prism Custom Routines (method, procedure, function)