Manual Pages for UNIX Operating System command usage for man XSetDashes

XLIB FUNCTIONS                           XSetLineAttributes(3x11)



NAME
     XSetLineAttributes, XSetDashes - GC convenience routines

SYNTAX
     cc [ flag... ] file... -lX11 [ library... ]

     int XSetLineAttributes(Display *display, GC gc, unsigned int
          line_width, int line_style, int cap_style, int
          join_style);

     int XSetDashes(Display *display, GC gc, int dash_offset,
          char dash_list[], int n);

ARGUMENTS
     cap_style Specifies the line-style and cap-style you want to
               set for the specified GC.  You can pass CapNot-
               Last, CapButt, CapRound, or CapProjecting.

     dash_list Specifies the dash-list for the dashed line-style
               you want to set for the specified GC.

     dash_offset
               Specifies the phase of the pattern for the dashed
               line-style you want to set for the specified GC.

     display   Specifies the connection to the X server.

     gc        Specifies the GC.

     join_style
               Specifies the line join-style you want to set for
               the specified GC.  You can pass JoinMiter, Join-
               Round, or JoinBevel.

     line_style
               Specifies the line-style you want to set for the
               specified GC.  You can pass LineSolid, LineOnOff-
               Dash, or LineDoubleDash.

     line_width
               Specifies the line-width you want to set for the
               specified GC.

     n         Specifies the number of elements in dash_list.

DESCRIPTION
     The XSetLineAttributes function sets the line drawing com-
     ponents in the specified GC.

     XSetLineAttributes can generate BadAlloc, BadGC, and Bad-
     Value errors.




X Version 11        Last change: libX11 1.3.5                   1






XLIB FUNCTIONS                           XSetLineAttributes(3x11)



     The XSetDashes function sets the dash-offset and dash-list
     attributes for dashed line styles in the specified GC.
     There must be at least one element in the specified
     dash_list, or a BadValue error results. The initial and
     alternating elements (second, fourth, and so on) of the
     dash_list are the even dashes, and the others are the odd
     dashes.  Each element specifies a dash length in pixels.
     All of the elements must be nonzero, or a BadValue error
     results.  Specifying an odd-length list is equivalent to
     specifying the same list concatenated with itself to produce
     an even-length list.

     The dash-offset defines the phase of the pattern, specifying
     how many pixels into the dash-list the pattern should actu-
     ally begin in any single graphics request.  Dashing is con-
     tinuous through path elements combined with a join-style but
     is reset to the dash-offset between each sequence of joined
     lines.

     The unit of measure for dashes is the same for the ordinary
     coordinate system.  Ideally, a dash length is measured along
     the slope of the line, but implementations are only required
     to match this ideal for horizontal 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 135 and 225 degrees
     from the x axis.  For all other lines, the major axis is the
     y axis.

     XSetDashes can generate BadAlloc, BadGC, and BadValue
     errors.

DIAGNOSTICS
     BadAlloc  The server failed to allocate the requested
               resource or server memory.

     BadGC     A value for a GContext argument does not name a
               defined GContext.

     BadValue  Some numeric value falls outside the range of
               values accepted by the request.  Unless a specific
               range is specified for an argument, the full range
               defined by the argument's type is accepted.  Any
               argument defined as a set of alternatives can gen-
               erate this error.

SEE ALSO
     XCreateGC(3x11), XQueryBestSize(3x11), XSetArcMode(3x11),
     XSetClipOrigin(3x11), XSetFillStyle(3x11), XSetFont(3x11),
     XSetState(3x11), XSetTile(3x11)
     Xlib - C Language X Interface



X Version 11        Last change: libX11 1.3.5                   2






XLIB FUNCTIONS                           XSetLineAttributes(3x11)



ATTRIBUTES
     See attributes(5) for descriptions of the following attri-
     butes:

     ____________________________________________________________
    |       ATTRIBUTE TYPE        |       ATTRIBUTE VALUE       |
    |_____________________________|_____________________________|
    | Availability                | x11/library/libx11          |
    |_____________________________|_____________________________|
    | Interface Stability         | Committed                   |
    |_____________________________|_____________________________|
    | MT-Level                    | See XInitThreads(3X11)      |
    |_____________________________|_____________________________|










































X Version 11        Last change: libX11 1.3.5                   3