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XDrawPoint(3X11)
X11R6
NAME
  XDrawPoint, XDrawPoints, XPoint - draw points and points structure

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

  XDrawPoints(display, d, gc, points, npoints, mode)
	  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(3X11), XDrawLine(3X11), XDrawRectangle(3X11)

  Xlib -- C Language X Interface

Index for Section 3X11

Alphabetical listing for X

Top of page