XDrawRectangle(3X11)XDrawRectangle(3X11)NAME
XDrawRectangle, XDrawRectangles, XRectangle - draw rectangles and rec‐
tangles structure
SYNOPSIS
XDrawRectangle(display, d, gc, x, y, width, height)
Display *display;
Drawable d;
GC gc;
int x, y;
unsigned int width, height;
XDrawRectangles(display, d, gc, rectangles, nrectangles)
Display *display;
Drawable d;
GC gc;
XRectangle rectangles[];
int nrectangles;
ARGUMENTS
Specifies the drawable. Specifies the connection to the X server.
Specifies the GC. Specifies the number of rectangles in the array.
Specifies an array of rectangles. Specify the width and height, which
specify the dimensions of the rectangle. Specify the x and y coordi‐
nates, 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 pro‐
tocol 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
A value for a Drawable argument does not name a defined Window or
Pixmap. A value for a GContext argument does not name a defined GCon‐
text. An InputOnly window is used as a Drawable. 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 ALSOXDrawArc(3X11), XDrawLine(3X11), XDrawPoint(3X11)
Xlib -- C Language X Interface
XDrawRectangle(3X11)
