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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <X11/Xlib.h>
#include <X11/Xft/Xft.h>

Display *d;
Window w;

char *fontname = "Times-24";
int x = 200;
int y = 200;

static void usage(void)
{
    fprintf(stderr, "usage: xtxft [-f font] [-x xoff] [-y yoff] text\n");
    exit(1);
}

int main(int argc, char **argv)
{
    XEvent evt;
    XSetWindowAttributes attr;
    char c, *str;
    XftFont *font;
    XftDraw *draw;
    XRenderColor colortmp;
    XftColor color_fg;

    while ((c = getopt(argc, argv, ":f:x:y:")) != -1) {
	switch (c) {
	    case 'f':
		fontname = (char *)malloc(strlen(optarg) + 1);
		strcpy(fontname, optarg);
		break;
	    case 'x':
		x = atoi(optarg);
		break;
	    case 'y':
		y = atoi(optarg);
		break;
	    case '?':
	    case ':':
	    default:
		usage();
	}
    }

    if ((argc - optind) < 1)
	usage();

    str = (char *)malloc(strlen(argv[optind]) + 1);
    strcpy(str, argv[optind]);

    d = XOpenDisplay(NULL);

    w = XCreateSimpleWindow(d, DefaultRootWindow(d), 0, 0,
	    1024, 768, 0, BlackPixel(d, 0), WhitePixel(d, 0));

    if (! w) {
	printf("Error creating window!\n");
	exit(1);
    }

    attr.event_mask = KeyPressMask;
    XChangeWindowAttributes(d, w, CWEventMask, &attr);
    XStoreName(d, w, "XText");

    XMapWindow(d, w);
    XMoveWindow(d, w, 0, 0);

    font = XftFontOpenName(d, DefaultScreen(d), fontname);

    draw = XftDrawCreate(d, w, DefaultVisual(d, 0), DefaultColormap(d, 0));

    colortmp.red = 0;
    colortmp.green = 0;
    colortmp.blue = 0;
    colortmp.alpha = 0xffff;
    XftColorAllocValue(d, DefaultVisual(d, 0), DefaultColormap(d, 0),
	    &colortmp, &color_fg);

    XftDrawString8(draw, &color_fg, font, x, y, str, strlen(str));

    while(1) {
	while(XPending(d)) {
	    XNextEvent(d, &evt);
	    if (evt.type == KeyPress)
		goto end;
	}
	usleep(1000);
    }

end:
    XDestroyWindow(d, w);
    XCloseDisplay(d);
    return 0;
}
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