1 files changed, 59 insertions, 0 deletions
diff --git a/tests/xlib-beginner.c b/tests/xlib-beginner.c
new file mode 100644
index 0000000..b31a148
--- /dev/null
+++ b/tests/xlib-beginner.c
@@ -0,0 +1,59 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xos.h>
+#include <X11/Xatom.h>
+#include <X11/keysym.h>
+/*Linux users will need to add -ldl to the Makefile to compile 
+ *this example.
+ */
+Display *dis;
+Window win;
+XEvent report;
+GC green_gc;
+XColor green_col;
+Colormap colormap;
+/*
+Try changing the green[] = below to a different color.
+The color can also be from /usr/X11R6/lib/X11/rgb.txt, such as RoyalBlue4.
+A # (number sign) is only needed when using hexadecimal colors.
+*/
+char green[] = "#00FF00";
+
+int main() {
+	dis = XOpenDisplay(NULL);
+	win = XCreateSimpleWindow(dis, RootWindow(dis, 0), 1, 1, 500, 500, 0, BlackPixel (dis, 0), BlackPixel(dis, 0));
+	XMapWindow(dis, win);
+	colormap = DefaultColormap(dis, 0);
+	green_gc = XCreateGC(dis, win, 0, 0);
+	XParseColor(dis, colormap, green, &green_col);
+	XAllocColor(dis, colormap, &green_col);
+	XSetForeground(dis, green_gc, green_col.pixel);
+
+	XSelectInput(dis, win, ExposureMask | KeyPressMask | ButtonPressMask);
+
+	XDrawRectangle(dis, win, green_gc, 1, 1, 497, 497);
+	XDrawRectangle(dis, win, green_gc, 50, 50, 398, 398);
+	XFlush(dis);
+
+	while (1)  {
+	XNextEvent(dis, &report);
+		switch  (report.type) {
+        case Expose:   
+ 	      	fprintf(stdout, "I have been exposed.\n");
+				XDrawRectangle(dis, win, green_gc, 1, 1, 497, 497);
+				XDrawRectangle(dis, win, green_gc, 50, 50, 398, 398);
+				XFlush(dis);
+			break;
+	 		case KeyPress:
+		/*Close the program if q is pressed.*/
+				if (XLookupKeysym(&report.xkey, 0) == XK_q) {
+				exit(0);
+				}
+			break;
+		}
+	}
+
+return 0;
+}