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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

2121.0. "A new user struggling with fonts." by NRMACS::FRANCIS (A wife and an hernia to support.) Wed Jan 24 1990 06:19

Hi,
	I am developing a DecWindows application for a customer and need some
help with fonts. I want to determine the length of a text string to be
displayed in a Simple Text Widget. To do this I am using the Xlib function
"XTextWidth" which requires a font pointer as a parameter. This is a pointer
to a font data structure. The documentation I have says this pointer can be
obtained by calling the Xlib function "XQueryFont". This however requires the
font identification as a parameter. This font_id can be obtained from the 
Graphics Context data values struct so the documentation tells me. However
when I use this value "XQueryFont" returns zero which causes "XTextWidth" to
acvio. When I looked at the font id in the graphics context values data structure
it appears to contain a nonsensical value, which also appears as the value
for other fields in the same data structure.

	Can anyone help me with this problem?

P.S. A list of available fonts is supposed to be in a file named
     DECW$FONT.100DPI according to "Guide to Xlib Programming", I don't
     appear to have this file on my system. Can you tell me where I can
     find the names of the fonts available for use.


Thanks in anticipation,
Pete Francis
U.K. Manufactuting Applications Centre.

T.R Title User Personal
Name Date Lines

2121.1 Answer to your second question STAR::VATNE Peter Vatne, VMS Development Wed Jan 24 1990 13:26 10

T.R	Title	User	Personal Name	Date	Lines
2121.1	Answer to your second question	STAR::VATNE	Peter Vatne, VMS Development	`Wed Jan 24 1990 13:26`	10
	The reference in section 8.2 of the VMS DECwindows Guide to Xlib Programming is wrong. The DEC-supplied font files are located in the directory: SYS$SYSROOT:[SYSFONT.DECW.75DPI] or SYS$SYSROOT:[SYSFONT.DECW.100DPI] However, this will only give you the file names of the font files, not the name of the font itself. To find the names of the fonts available for use, see Appendix D of the VMS DECwindows Guide to Xlib Programming.

The reference in section 8.2 of the VMS DECwindows Guide to Xlib Programming
is wrong.  The DEC-supplied font files are located in the directory:

	SYS$SYSROOT:[SYSFONT.DECW.75DPI]
		or
	SYS$SYSROOT:[SYSFONT.DECW.100DPI]

However, this will only give you the file names of the font files, not
the name of the font itself.  To find the names of the fonts available
for use, see Appendix D of the VMS DECwindows Guide to Xlib Programming.