From 8a59f41102b4189e66d9176cccb579857431be48 Mon Sep 17 00:00:00 2001
From: William Casarin <jb55@jb55.com>
Date: Tue, 26 Jun 2018 15:41:06 -0700
Subject: cmdtree

---
 .dir-locals.el |  7 +++++++
 .gitignore     |  1 +
 Makefile       |  5 +++++
 cmdtree.c      | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 66 insertions(+)
 create mode 100644 .dir-locals.el
 create mode 100644 .gitignore
 create mode 100644 Makefile
 create mode 100644 cmdtree.c

diff --git a/.dir-locals.el b/.dir-locals.el
new file mode 100644
index 0000000..145640c
--- /dev/null
+++ b/.dir-locals.el
@@ -0,0 +1,7 @@
+((c-mode . ((c-file-style . "linux")
+            (indent-tabs-mode . t)
+            (show-trailing-whitespace . t)
+            (c-basic-offset . 8)
+            (tab-width . 8)
+            ))
+ )
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..160ca11
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/cmdtree
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2a9132e
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,5 @@
+
+all: cmdtree
+
+cmdtree: cmdtree.c
+	$(CC) -O -g -lX11 $< -o $@
diff --git a/cmdtree.c b/cmdtree.c
new file mode 100644
index 0000000..5802d64
--- /dev/null
+++ b/cmdtree.c
@@ -0,0 +1,53 @@
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/Xresource.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main(void) {
+	Display *d;
+	XIC xic;
+	Window w;
+	XEvent e;
+	char *msg = "cmdtree is a tree of commands";
+	int s;
+	char buf[32];
+	int len, done = 0;
+	KeySym ksym = NoSymbol;
+	Status status;
+	XIM xim;
+
+	d = XOpenDisplay(NULL);
+	if (d == NULL) {
+		fprintf(stderr, "Cannot open display\n");
+		exit(1);
+	}
+
+	s = DefaultScreen(d);
+	w = XCreateSimpleWindow(d, RootWindow(d, s), 10, 10, 100, 100, 1,
+				BlackPixel(d, s), WhitePixel(d, s));
+	xim = XOpenIM(d, NULL, NULL, NULL);
+	xic = XCreateIC(xim, XNInputStyle, XIMPreeditNothing | XIMStatusNothing,
+			XNClientWindow, w, XNFocusWindow, w, NULL);
+	XSelectInput(d, w, ExposureMask | KeyPressMask);
+	XMapWindow(d, w);
+
+	while (!done) {
+		XNextEvent(d, &e);
+		if (e.type == Expose) {
+			XFillRectangle(d, w, DefaultGC(d, s), 20, 20, 10, 10);
+			XDrawString(d, w, DefaultGC(d, s), 10, 50, msg, strlen(msg));
+		}
+
+		if (e.type == KeyPress) {
+			len = XmbLookupString(xic, (XKeyEvent*)&e, buf, sizeof buf, &ksym, &status);
+			if (ksym == XK_q) break;
+		}
+
+	}
+
+	XCloseDisplay(d);
+	return 0;
+}
-- 
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