how to check if the form is open ? and if the form is open then do not open it again. If the form is not open the open it.
mnuAboutMe_click(menuItem: MenuItem input) updating;
vars
form:Form1;
begin
if Form1.instances.first = null then
create form transient;
form.show();
else
return;
endif;
end;
that's an example of how I did it and it didn't work.