How to create Eg. Ten instaces of the same form?

[Dax]

Well, first: do not use the global var Form1 in the Form's Unit anymore. Rather use self when you are in the same Unit. If you want to use these Forms from other Forms or Units, you must create a new global var of type array[1..10] of TForm1 to hold the ten Forms for access from outside themselves.

After that, you need an activation-procedure to create an show all the Forms, maybe like this:

Delphi-Quellcode:

procedure ShowAllForms;
var 
  i: Integer;
begin
  for i := 1 to 10 do
  begin
    Forms[i] := TForm1.Create(Application); // Forms is your array
    Forms[i].Show;
  end;
end;

When done, you can access the Forms through their index