+/**
+ * Remove window border/decorations.
+ */
+static void
+no_border( Display *dpy, Window w)
+{
+ static const unsigned MWM_HINTS_DECORATIONS = (1 << 1);
+ static const int PROP_MOTIF_WM_HINTS_ELEMENTS = 5;
+
+ typedef struct
+ {
+ unsigned long flags;
+ unsigned long functions;
+ unsigned long decorations;
+ long inputMode;
+ unsigned long status;
+ } PropMotifWmHints;
+
+ PropMotifWmHints motif_hints;
+ Atom prop, proptype;
+ unsigned long flags = 0;
+
+ /* setup the property */
+ motif_hints.flags = MWM_HINTS_DECORATIONS;
+ motif_hints.decorations = flags;
+
+ /* get the atom for the property */
+ prop = XInternAtom( dpy, "_MOTIF_WM_HINTS", True );
+ if (!prop) {
+ /* something went wrong! */
+ return;
+ }
+
+ /* not sure this is correct, seems to work, XA_WM_HINTS didn't work */
+ proptype = prop;
+
+ XChangeProperty( dpy, w, /* display, window */
+ prop, proptype, /* property, type */
+ 32, /* format: 32-bit datums */
+ PropModeReplace, /* mode */
+ (unsigned char *) &motif_hints, /* data */
+ PROP_MOTIF_WM_HINTS_ELEMENTS /* nelements */
+ );
+}
+
+