NAME

       XDrawRectangle, XDrawRectangles, XRectangle - draw rectangles and rectangles structure

SYNTAX

       int  XDrawRectangle(Display *display, Drawable d, GC gc, int x, int y, unsigned int width,
              unsigned int height);

       int XDrawRectangles(Display *display, Drawable d,  GC  gc,  XRectangle  rectangles[],  int
              nrectangles);

ARGUMENTS

       d         Specifies the drawable.

       display   Specifies the connection to the X server.

       gc        Specifies the GC.

       nrectangles
                 Specifies the number of rectangles in the array.

       rectangles
                 Specifies an array of rectangles.

       width
       height    Specify the width and height, which specify the dimensions of the rectangle.

       x
       y         Specify  the  x  and  y  coordinates, which specify the upper-left corner of the
                 rectangle.

DESCRIPTION

       The XDrawRectangle and XDrawRectangles  functions  draw  the  outlines  of  the  specified
       rectangle  or  rectangles  as if a five-point PolyLine protocol request were specified for
       each rectangle:

              [x,y] [x+width,y] [x+width,y+height] [x,y+height] [x,y]

       For the specified rectangle or rectangles, these functions do not draw a pixel  more  than
       once.   XDrawRectangles  draws  the  rectangles  in  the  order  listed  in the array.  If
       rectangles intersect, the intersecting pixels are drawn multiple times.

       Both functions use these GC components: function, plane-mask, line-width, line-style, cap-
       style,  join-style,  fill-style,  subwindow-mode,  clip-x-origin, clip-y-origin, and clip-
       mask.  They also use these GC mode-dependent  components:  foreground,  background,  tile,
       stipple, tile-stipple-x-origin, tile-stipple-y-origin, dash-offset, and dash-list.

       XDrawRectangle and XDrawRectangles can generate BadDrawable, BadGC, and BadMatch errors.

STRUCTURES

       The XRectangle structure contains:

       typedef struct {
               short x, y;
               unsigned short width, height;
       } XRectangle;

       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.

SEE ALSO

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