/plugins/project-wizard/templates/xlib/src/main.c

[+ autogen5 template +]
/*
 * main.c
 * Copyright (C) [+Author+] [+(shell "date +%Y")+] <[+Email+]>
 *
[+CASE (get "License") +]
[+ == "BSD" +][+(bsd (get "Name") (get "Author") "\t")+]
[+ == "LGPL" +][+(lgpl (get "Name") (get "Author") "\t")+]
[+ == "GPL" +][+(gpl (get "Name")  "\t")+]
[+ESAC+] */

/*Program closes with a mouse click or keypress */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>

int main (int argc, char *argv[])
{
	Display              *dpy;
	Visual               *visual;
	int                   depth;
	XSetWindowAttributes  attributes;
	Window                win;
	XFontStruct         *fontinfo;
	XColor               color, dummy;
	XGCValues            gr_values;
	GC                   gc;
	XKeyEvent event;

	dpy = XOpenDisplay(NULL);
	visual = DefaultVisual(dpy, 0);
	depth  = DefaultDepth(dpy, 0);
	attributes.background_pixel = XWhitePixel(dpy, 0);
	/* create the application window */
	win = XCreateWindow(dpy, XRootWindow(dpy, 0),
			50, 50, 400, 400, 5, depth,
			InputOutput, visual, CWBackPixel,
			&attributes);
	XSelectInput(dpy, win, ExposureMask | KeyPressMask |
			ButtonPressMask | StructureNotifyMask);

	fontinfo = XLoadQueryFont(dpy, "6x10");
	XAllocNamedColor(dpy, DefaultColormap(dpy, 0),
		"green", &color, &dummy);
	gr_values.font = fontinfo->fid;
	gr_values.foreground = color.pixel;
	gc = XCreateGC(dpy, win, GCFont+GCForeground, &gr_values);
	XMapWindow(dpy, win);

	/* run till key press */
	while(1){
		XNextEvent(dpy, (XEvent *)&event);
		switch(event.type) {
			case Expose:
				XDrawLine(dpy, win, gc, 0, 0, 100, 100);
				XDrawRectangle(dpy, win, gc, 140, 140, 50, 50);
				XDrawString(dpy, win, gc, 100, 100, "hello X world", 13);
				break;
			case ButtonPress:
			case KeyPress:
				XUnloadFont(dpy, fontinfo->fid);
				XFreeGC(dpy, gc);
				XCloseDisplay(dpy);
				exit(0);
				break;
			case ConfigureNotify:
				/* reconfigure size of window here */
				break;
			default:
				break;
		}
	}
	return(0);
}