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Conference bulova::decw_jan-89_to_nov-90

Title:	DECWINDOWS 26-JAN-89 to 29-NOV-90
Notice:	See 1639.0 for VMS V5.3 kit; 2043.0 for 5.4 IFT kit
Moderator:	STAR::VATNE

Created:	Mon Oct 30 1989
Last Modified:	Mon Dec 31 1990
Last Successful Update:	Fri Jun 06 1997
Number of topics:	3726
Total number of notes:	19516

2972.0. "Help on ScrollBarWidget crash needed" by STKHLM::BERGGREN (Nils Berggren SWAS/Telecom,Sweden) Thu Jun 21 1990 08:15

Hi, 

I'm having a serious problem with the scrollbar-widget.   When I'm trying to 
set some resources, specifically XtNheight, DwtNshown and DwtNpageInc,
with XtSetValues like:
	 XtSetArg(args[0], XtNheight, visible_height);
	 XtSetArg(args[1], DwtNshown, visible_height);
	 XtSetArg(args[2], DwtNpageInc, page_inc);
	 XtSetValues(scroll_barW, args, XtNumber(args)); }

I get the following error at XtSetValues:
"X Error event received from server:  BadValue - integer paramter out of range"
Failed request major opcode 61 (X_ClearArea), minor opcode 0

visible_height equals to the height of the window the SB is attached to 
(which is supposed to be scrolled) and page_inc is less than visible_height.

    any clues on what to do???

    Nils Berggren

T.R Title User Personal
Name Date Lines

2972.1 possible problem R2ME2::OBRYAN Thu Jun 21 1990 15:12 18

T.R	Title	User	Personal Name	Date	Lines
2972.1	possible problem	R2ME2::OBRYAN		`Thu Jun 21 1990 15:12`	18
	re:.0 > XtSetArg(args[0], XtNheight, visible_height); > XtSetArg(args[1], DwtNshown, visible_height); >"X Error event received from server: BadValue - integer paramter out of range" Unless I'm misreading the documentation, DwtNshown is related to minValue and maxValue, not the height. Shown is the "proportion of visible underlying work area" with the difference between maxValue and minValue indicating the magnitude of that work area. As such, I would expect DwtNshown to be a number between 1 and abs(maxValue - minValue). Conversely, height is the physical height of the scroll bar bounding window in Pixels (which may greatly exceed abs(maxValue - minValue)). Of course, this may have nothing to do with the error message :-) Michael

re:.0

>	 XtSetArg(args[0], XtNheight, visible_height);
>	 XtSetArg(args[1], DwtNshown, visible_height);
>"X Error event received from server:  BadValue - integer paramter out of range"

Unless I'm misreading the documentation, DwtNshown is related to minValue and
maxValue, not the height.  Shown is the "proportion of visible underlying work
area" with the difference between maxValue and minValue indicating the
magnitude of that work area.  As such, I would expect DwtNshown to be a
number between  1  and  abs(maxValue - minValue).  Conversely, height is
the physical height of the scroll bar bounding window in Pixels (which may
greatly exceed abs(maxValue - minValue)).

Of course, this may have nothing to do with the error message :-)

Michael