Declare public global variable in Delphi

Question

Let\'s say I have two forms in a delphi project, I want to be able to access form1\'s variables from form2. Is there anyone to declare, say a \'public\' variable in form1 wh

Answer 1

the example shows Form1(main) and Form2(other) which has better use for organization;

---

FORM1 interface declaration only;

can be read from all forms;

interface

procedure oncreate(Sender: TObject);

implementation
uses Form2;

procedure TForm1.oncreate(Sender: TObject);
begin
  Form2.test1;
  //{Form2.test2} are not visible to Form1;
end;

FORM2 interface and implementation declarations;

implementation declaration are local to the unit; cannot be read from all forms;

interface

procedure test1;

implementation

procedure test2; //declared under implementation;

procedure TForm2.test1;
begin
  ShowMessage('form2 test1 message');
end;

procedure TForm2.test2;
begin
  ShowMessage('form2 test2 message');
end;

---

any procedure, function, type, variable can be local to the unit under implementation;
it also makes intellisense(Ctrl+Space) clean from declarations used only to the unit;