12-19-2017
Not clear.
Do you have a string with above structure and want to produce a file from it, incrementing the value indicated line by line? Then, where to stop?
Or, do you have a file with above structured values in the lines, and want to just increment each line's value?
I guess, the value 0x7F needs special treatment, as the length has to be incremented, and the value will need four places, then?
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LEARN ABOUT HPUX
xsetdashes
XSetDashes() XSetDashes()
Name
XSetDashes - set a pattern of line dashes in a graphics context.
Synopsis
XSetDashes(display, gc, dash_offset, dash_list, n)
Display *display;
GC gc;
int dash_offset;
char dash_list[];
int n;
Arguments
display Specifies a connection to an X server; returned from XOpenDisplay().
gc Specifies the graphics context.
dash_offset
Specifies the phase of the pattern for the dashed line style.
dash_list Specifies the dash list for the dashed line style. An odd-length list is equivalent to the same list concatenated with itself to
produce an even-length list.
n Specifies the length of the dash list argument.
Description
XSetDashes() sets the dashes component of a GC. The initial and alternating elements of the dash_list argument are the dashes, the others
are the gaps. All of the elements must be non-zero, with lengths measured in pixels. The dash_offset argument defines the phase of the
pattern, specifying how many pixels into the dash_list the pattern should actually begin in the line drawn by the request.
n specifies the length of dash_list. An odd value for n is interpreted as specifying the dash_list concatenated with itself to produce
twice as long a list.
Ideally, a dash length is measured along the slope of the line, but server implementors are only required to match this ideal for horizon-
tal and vertical lines. Failing the ideal semantics, it is suggested that the length be measured along the major axis of the line. The
major axis is defined as the x axis for lines drawn at an angle of between -45 and +45 degrees or between 315 and 225 degrees from the x
axis. For all other lines, the major axis is the y axis.
See Volume One, Chapter 5, The Graphics Context, for further information.
Errors
BadAlloc
BadGC
BadValue No values in dash_list.
Element in dash_list is 0.
See Also
XDefaultGC(), XChangeGC(), XCopyGC(), XCreateGC(), XFreeGC(), XGContextFromGC(), XSetArcMode(), XSetBackground(), XSetClipMask(), XSetCli-
pOrigin(), XSetClipRectangles(), XSetFillRule(), XSetFillStyle(), XSetForeground(), XSetFunction(), XSetGraphicsExposures(), XSetLineAt-
tributes(), XSetPlaneMask(), XSetState(), XSetStipple(), XSetSubwindowMode(), XSetTSOrigin().
Xlib - Graphics Context XSetDashes()