Optionaler Parameter

[Union]

Delphi-Quellcode:

function AddWindow(Handle: Integer; hWndParent: Integer): Boolean; overload;
function AddWindow(Handle: Integer; ): Boolean; overload;

implementation

function AddWindow(Handle: Integer; hWndParent: Integer): Boolean; 
begin
   // Programmcode...
end;

function AddWindow(Handle: Integer ): Boolean; 
begin
   AddWindow(Handle, 0);
end;