1XDrawRectangle(3)               XLIB FUNCTIONS               XDrawRectangle(3)
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NAME

6       XDrawRectangle,  XDrawRectangles, XRectangle - draw rectangles and rec‐
7       tangles structure
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SYNTAX

10       int XDrawRectangle(Display *display, Drawable d, GC gc, int x,  int  y,
11              unsigned int width, unsigned int height);
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13       int  XDrawRectangles(Display  *display,  Drawable  d, GC gc, XRectangle
14              rectangles[], int nrectangles);
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ARGUMENTS

17       d         Specifies the drawable.
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19       display   Specifies the connection to the X server.
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21       gc        Specifies the GC.
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23       nrectangles
24                 Specifies the number of rectangles in the array.
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26       rectangles
27                 Specifies an array of rectangles.
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29       width
30       height    Specify the width and height, which specify the dimensions of
31                 the rectangle.
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33       x
34       y         Specify the x and y coordinates, which specify the upper-left
35                 corner of the rectangle.
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DESCRIPTION

38       The XDrawRectangle and XDrawRectangles functions draw the  outlines  of
39       the  specified rectangle or rectangles as if a five-point PolyLine pro‐
40       tocol request were specified for each rectangle:
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42              [x,y] [x+width,y] [x+width,y+height] [x,y+height] [x,y]
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44       For the specified rectangle or rectangles, these functions do not  draw
45       a  pixel  more  than once.  XDrawRectangles draws the rectangles in the
46       order listed in the array.  If rectangles intersect,  the  intersecting
47       pixels are drawn multiple times.
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49       Both  functions  use  these  GC components: function, plane-mask, line-
50       width, line-style, cap-style, join-style,  fill-style,  subwindow-mode,
51       clip-x-origin,  clip-y-origin,  and  clip-mask.  They also use these GC
52       mode-dependent components: foreground, background, tile, stipple, tile-
53       stipple-x-origin, tile-stipple-y-origin, dash-offset, and dash-list.
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55       XDrawRectangle and XDrawRectangles can generate BadDrawable, BadGC, and
56       BadMatch errors.
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STRUCTURES

59       The XRectangle structure contains:
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61       typedef struct {
62               short x, y;
63               unsigned short width, height;
64       } XRectangle;
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66       All x and y members are signed integers.  The width and height  members
67       are  16-bit  unsigned  integers.  You should be careful not to generate
68       coordinates and sizes out of the 16-bit ranges,  because  the  protocol
69       only has 16-bit fields for these values.
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DIAGNOSTICS

72       BadDrawable
73                 A  value for a Drawable argument does not name a defined Win‐
74                 dow or Pixmap.
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76       BadGC     A value for a GContext argument does not name a defined GCon‐
77                 text.
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79       BadMatch  An InputOnly window is used as a Drawable.
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81       BadMatch  Some  argument  or pair of arguments has the correct type and
82                 range but fails to match in some other way  required  by  the
83                 request.
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SEE ALSO

86       XDrawArc(3), XDrawLine(3), XDrawPoint(3)
87       Xlib - C Language X Interface
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91X Version 11                     libX11 1.8.7                XDrawRectangle(3)
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