SAXTON@SLACSLD.BITNET.UUCP (12/19/86)
I have a problem with an undocumented VMS workstation subroutine, UIS$SET_VP_TITLE. This routine was described at the end of the Workstation internals talk at the Fall '86 Decus, and enables one to change the title at the top of a viewport. The problem is that when it is called from a button AST routine, things start to go wrong if the viewport is being written to at the same time. The exact symptoms differ from time to time, but the system is left in a partially non-functioning state with respect to the screen. Sometimes other viewports stop responding to button clicks on the border. Sometimes other processes trying to write to the screen get blocked until something is typed to the process causing the problem. Has anyone else seen this problem, and does anyone know how to fix it? Owen Saxton Stanford Linear Accelerator Center Bitnet: SAXTON@SLACSLD, HEP Decnet: SLD::SAXTON