Screen Saver

This is the documentation for SCRUTIL.EXE and SCRBLANK.DLL, an OS/2 Presentation Manager screen saver for OS/2 2.x. There was an older version of this program that ran under OS/2 1.x but this doesn't do so any longer. Kai Uwe Rommel Germany email: rommel@ars.de (preferred) or: rommel@leo.org This small program is a screen saver for OS/2 Presentation Manager and in addition shows a small window with the current date and time and amount of free memory. Put SCRUTIL.EXE somewhere in your PATH or where you keep your utility programs and SCRBLANK.DLL somewhere in your LIBPATH. SCRBLANK.DLL needs IOPL because it uses hardware features of the video cards to blank the screen(s). Set either IOPL=YES in CONFIG.SYS or add SCRBLANK to your IOPL list. You can start the program by entering the command "START SCRUTIL" but you better put it the startup folder. Initially, the program puts it's window in the upper right screen corner, but you can move it wherever you want it. Click with the right mouse button on it to get the context menu. From there on, the program should be almost self-explaining. The "Lock" option means that you can suspend the blanking function temporarily. It is kind of an unfinished work and, given my amount of spare time, will probably never be finished. It does what I need for the hardware I use so, unfortunatley, I have little motivation to spend more of my time for it. The missing items are: - no support for fullscreen DOS and Win-OS/2 sessions - no support for DPMS blank/suspend modes, only for DPMS power off mode The "Blank Screen" option does not use DPMS but hardware facilities to turn the screen black, when possible. If the hardware does not support this (or I did not know how it works), it will use a black PM window to cover the screen. Generally, it can use hardware facilities only on simple VGA/SVGA/S3 cards and otherwise only in 256 color modes where it can use palette support. The "Suspend" option is in the setup dialog but not implemented. Source code is not included. But should anyone want to take over and add some features, feel free to contact me. See license.txt for the conditions of use.