On Tue, 28 Jun 2011 11:22:25 -0400, Gerhard Postpischil wrote: >On 6/27/2011 5:48 PM, Shmuel Metz (Seymour J.) wrote: >> Why? The correct response to a change in geometry is to write a READ >> PARTITION (QUERY) and to adjust to the new screen geometry. That >> should elimenate the garbage whether the new size is smaller, larger >> or the same. > >There is no formal mechanism to let TSO announce a change in >screen size. The closest would be an error on the terminal due >to a screen size modified to a smaller character count. So an >I/O error on a TPUT might justify the Query, assuming the >program can copy with the results, but a TPUT without error, to >a larger screen size, may go undetected except by the viewer. > >Whether or not an error occurs also depends on the interface. A >local non-SNA may not produce an error, and even the more >obvious case where a session is suspended and the user does a >RECONNECT from a different geometry is not addressed. > Since it is my habit (as I suspect of many users) to press PA2 when the screen is garbled, might that be a good key to the programmer to issue the (QUERY)?
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