NAME

       XDrawPoint, XDrawPoints, XPoint - draw points and points structure

SYNTAX

       int XDrawPoint(Display *display, Drawable d, GC gc, int x, int y);

       int  XDrawPoints(Display  *display,  Drawable  d,  GC gc, XPoint *points, int npoints, int
              mode);

ARGUMENTS

       d         Specifies the drawable.

       display   Specifies the connection to the X server.

       gc        Specifies the GC.

       mode      Specifies   the   coordinate   mode.    You   can   pass   CoordModeOrigin    or
                 CoordModePrevious.

       npoints   Specifies the number of points in the array.

       points    Specifies an array of points.

       x
       y         Specify the x and y coordinates where you want the point drawn.

DESCRIPTION

       The  XDrawPoint  function  uses  the foreground pixel and function components of the GC to
       draw a single point into the specified drawable; XDrawPoints draws  multiple  points  this
       way.    CoordModeOrigin   treats   all   coordinates   as  relative  to  the  origin,  and
       CoordModePrevious treats all coordinates after the  first  as  relative  to  the  previous
       point.  XDrawPoints draws the points in the order listed in the array.

       Both  functions use these GC components: function, plane-mask, foreground, subwindow-mode,
       clip-x-origin, clip-y-origin, and clip-mask.

       XDrawPoint can generate BadDrawable, BadGC, and BadMatch errors.  XDrawPoints can generate
       BadDrawable, BadGC, BadMatch, and BadValue errors.

STRUCTURES

       The XPoint structure contains:

       typedef struct {
               short x, y;
       } XPoint;

       All x and y members are signed integers.  The width and height members are 16-bit unsigned
       integers.  You should be careful not to generate coordinates and sizes out of  the  16-bit
       ranges, because the protocol only has 16-bit fields for these values.

DIAGNOSTICS

       BadDrawable
                 A value for a Drawable argument does not name a defined Window or Pixmap.

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

       BadMatch  An InputOnly window is used as a Drawable.

       BadMatch  Some  argument  or pair of arguments has the correct type and range but fails to
                 match in some other way required by the request.

       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 generate this error.

SEE ALSO

       XDrawArc(3), XDrawLine(3), XDrawRectangle(3)
       Xlib - C Language X Interface