xfillrectab(3) [hpux man page]
XFillRectangles() XFillRectangles() Name XFillRectangles - fill multiple rectangular areas. Synopsis XFillRectangles(display, drawable, gc, rectangles, nrectangles) Display *display; Drawable drawable; GC gc; XRectangle *rectangles; int nrectangles; Arguments display Specifies a connection to an X server; returned from XOpenDisplay(). drawable Specifies the drawable. gc Specifies the graphics context. rectangles Specifies a pointer to an array of rectangles. nrectangles Specifies the number of rectangles in the array. Description XFillRectangles() fills multiple rectangular areas in the specified drawable using the graphics context. The x and y coordinates of each rectangle are relative to the drawable's origin, and define the upper left corner of the rectangle. The rectangles are drawn in the order listed. For any given rectangle, no pixel is drawn more than once. If rectangles intersect, the inter- secting pixels will be drawn multiple times. In R4 and earlier there is a limit to the number of rectangles that can be drawn in a single call, based on the maximum request size, which varies according to the server. In R5, Xlib chops your call into as many protocol requests as required. To determine how many rectangles you can draw in a single call in R4, find out your server's maximum request size using XMaxRequestSize(). Subtract three and divide by two, and this is the maximum number of rectangles you can fill in a single XDrawRectangles() call. XFillRectangles() uses these graphics context components: function, plane_mask, fill_style, subwindow_mode, clip_x_origin, clip_y_ origin, and clip_ mask. This function also uses these graphics context components depending on the fill_ style: foreground, background, tile, stipple, ts_x_origin, and ts_y_ origin. For more information, see Volume One, Chapter 6, Drawing Graphics and Text, and Chapter 5, The Graphics Context. Structures typedef struct { short x, y; unsigned short width, height; } XRectangle; Errors BadDrawable BadGC BadMatch See Also XClearArea(), XClearWindow(), XCopyArea(), XCopyPlane(), XDraw, XDrawArc(), XDrawArcs(), XDrawFilled(), XDrawLine(), XDrawLines(), XDraw- Point(), XDrawPoints(), XDrawRectangle(), XDrawRectangles(), XDrawSegments(), XFillArc(), XFillArcs(), XFillPolygon(), XFillRectangle(), XFillRectangles(). Xlib - Drawing Primitives XFillRectangles()
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XDrawLines() XDrawLines() Name XDrawLines - draw multiple connected lines. Synopsis XDrawLines(display, drawable, gc, points, npoints, mode) Display *display; Drawable drawable; GC gc; XPoint *points; int npoints; int mode; Arguments display Specifies a connection to an X server; returned from XOpenDisplay(). drawable Specifies the drawable. gc Specifies the graphics context. points Specifies a pointer to an array of points. npoints Specifies the number of points in the array. mode Specifies the coordinate mode. Pass either CoordModeOrigin or CoordModePrevious. Description XDrawLines() draws a series of lines joined end-to-end. It draws lines connecting each point in the list (points array) to the next point in the list. The lines are drawn in the order listed in the points array. For any given line, no pixel is drawn more than once. If thin (zero line width) lines intersect, pixels will be drawn multiple times. If the first and last points coincide, the first and last lines will join correctly. If wide lines intersect, the inter- secting pixels are drawn only once, as though the entire multiline request were a single filled shape. There is a limit to the number of lines that can be drawn in a single call, which varies according to the server. To determine how many lines you can draw in a single call, find out your server's maximum request size using XMaxRequestSize(). Subtract three and divide by two, and this is the maximum number of lines you can draw in a single XDrawLines() call. The mode argument may have two values: o CoordModeOrigin indicates that all points are relative to the drawable's origin. o CoordModePrevious indicates that all points after the first are relative to the previous point. (The first point is always relative to the drawable's origin.) XDrawLines() uses the following components of the specified graphics context to draw multiple connected lines in the specified drawable: function, plane_mask, line_width, line_style, cap_style, join_style, fill_style, subwindow_mode, clip_x_origin, clip_y_ origin, and clip_mask. This function also uses these graphics context mode-dependent components: foreground, background, tile, stipple, ts_x_origin, ts_y_origin, dash_offset, and dashes. For more information, see Volume One, Chapter 6, Drawing Graphics and Text, and Chapter 5, The Graphics Context. Structures typedef struct { short x, y; } XPoint; Errors BadDrawable Specified drawable is invalid. BadGC Specified GC is invalid, or does not match the depth of drawable. BadMatch Specified drawable is an InputOnly window. BadValue Invalid coordinate_mode. See Also XClearArea(), XClearWindow(), XCopyArea(), XCopyPlane(), XDraw, XDrawArc(), XDrawArcs(), XDrawFilled(), XDrawLine(), XDrawPoint(), XDraw- Points(), XDrawRectangle(), XDrawRectangles(), XDrawSegments(), XFillArc(), XFillArcs(), XFillPolygon(), XFillRectangle(), XFillRectan- gles(). Xlib - Drawing Primitives XDrawLines()