If the main form is not set for visibility in the designer, the call CreateMainForm()will cause the form to be visible after completion of construction (and, therefore, after OnCreate).
procedure TApplication.CreateMainForm;
var
I: Integer;
begin
if FMainForm = nil then
begin
end;
if FMainForm <> nil then
FMainForm.Visible := True;
end;
form Visible TCommonCustomForm.Loaded(), DFM , , OnShow, . OnCreate , , , DFM .
, , . , , .