i know the 'X' button is minimising the form. and 'ok' is to close it.

as i know the main page of the application shall never be closeable, so it must be 'X'.

and the sub form from is uses 'ok'.

but the problem i got here is that when open a form from the main form's button evert, then i close this sub form using 'ok' to go bk to main form.

then click the same button again to enter the same sub form, it doesnt work. it does nothing at all.

help..