pavi@rootbeer.eng.ohio-state.edu (Pavithran Thomas) (03/08/90)
Greetings!
I'm just beginning to program on the HP and am running into a few
problems. I'm using C with starbase under TWM.
According to the manual "Starbase Programming With X11", the following
should work:
if ((display = gopen("/dev/screen/pavi", OUTDEV, "hp98550", INIT)) == -1)
exit(1);
if ((locator = gopen("/dev/screen/pavi FIRST_MOUSE", INDEV,
"hp-hil", INIT)) == -1)
exit(1);
if ((keyboard = gopen("/dev/screen/pavi FIRST_KEYBOARD", INDEV, "keyboard",
INIT)) == -1)
gclose(locator), gclose(display), exit(1);
Unfortunately, I get the following error message:
Starbase error 71: Requested resource is not available.
Procedure name: gopen
File descriptor: 8
Device file name: /dev/screen/pavi FIRST_MOUSE
Library location: human interface loop (20)
Could anybody please set me on the right track? All I want to do is to bring
up a window under X11 using starbase and use the mouse and keyboard in a
shared mode.
Any help would be greatly appreciated!
-pavi-
pavi@rootbeer.eng.ohio-state.edu
-=-
~~~~~~~~~~~~~~~~
Pavithran Thomas | DECNet: rcgl1::pavi ( 6177:pavi)
Graphics Consultant + InterNet: pavi@eng.ohio-state.edu tomg@hpcvlx.cv.hp.com (Thomas J. Gilg) (03/09/90)
> According to the manual "Starbase Programming With X11", the following > should work: > > if ((display = gopen("/dev/screen/pavi", OUTDEV, "hp98550", INIT)) == -1) > exit(1); > > if ((locator = gopen("/dev/screen/pavi FIRST_MOUSE", INDEV, > "hp-hil", INIT)) == -1) > exit(1); > if ((keyboard = gopen("/dev/screen/pavi FIRST_KEYBOARD", INDEV, "keyboard", > INIT)) == -1) > gclose(locator), gclose(display), exit(1); > > Unfortunately, I get the following error message: > > Starbase error 71: Requested resource is not available. > Procedure name: gopen > File descriptor: 8 > Device file name: /dev/screen/pavi FIRST_MOUSE > Library location: human interface loop (20) Your second gopen() is using the wrong driver (I think). Its seems wrong to do this, but instead of using the hp-hil driver which is geared to talking with physical hardware (eg, /dev/hil1), use the display driver. In your case, "hp98550" should be used. Any input resources attached to the X window are then passed on to Starbase via the hp98550 driver whenever the window has the input focus. I suspect your 3rd gopen() needs the same change. Thomas Gilg tomg@cv.hp.com
stroyan@hpfcso.HP.COM (Mike Stroyan) (03/09/90)
> Could anybody please set me on the right track? All I want to do is to bring > up a window under X11 using starbase and use the mouse and keyboard in a > shared mode. The "/dev/screen/pavi FIRST_MOUSE" string would be used to open the first mouse on the HP-HIL loop as an X extension input device. However that device is not available as an extension device because the X server is already using it as a pointer device. Instead, you can open the window name itself as an input device. That will use the X server pointer device for locator input and choice input. The X server keyboard device for can be used by the sox11 driver for another choice device. To use the sox11 driver try the following. if ((display = gopen("/dev/screen/pavi", OUTDEV, "hp98550", INIT)) == -1) exit(1); if ((input = gopen("/dev/screen/pavi", INDEV, "sox11", INIT)) == -1) gclose(display), exit(1); Now the mouse position will be locator ordinal 1 on "input". The mouse buttons are reported as button numbers on choice ordinal 1 and as a button state bitmask on choice ordinal 2. The keyboard will be choice ordinal 3. You could just open the window once with output and input as below, but the "hp98550" driver inputs from only the mouse and doesn't do input from the keyboard. if ((window = gopen("/dev/screen/pavi", OUTINDEV, "hp98550", INIT)) == -1) exit(1); Mike Stroyan, stroyan@hpfcla.hp.com
n188cu@tamunix (Joel Huddleston) (03/10/90)
> According to the manual "Starbase Programming With X11", the following > should work: > > if ((display = gopen("/dev/screen/pavi", OUTDEV, "hp98550", INIT)) == -1) > exit(1); > if ((locator = gopen("/dev/screen/pavi FIRST_MOUSE", INDEV, ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ > "hp-hil", INIT)) == -1) > exit(1); I think you should strongly suspect this syntax and double check it. Perhaps this FIRST_MOUSE should be bitwise or'ed to the INIT parameter at the end of the call. Or, maybe it should be in the "hp-hil" string. I don't have the manuals in front of me now or I could be more sure of what I am saying but it seems that the first parameter to gopen should ONLY contain the device file used for I/O. Joel Huddleston n188cu@tamunix.tamu.edu