Small adjustments

Author: swillner

README.md

@@ -64,6 +64,7 @@ DISPLAY OPTIONS
   -p, --pressed-color COLOR   dot color when mouse button pressed [default: #1f77b4]
   -o, --outline OUTLINE       line width of outline or 0 for filled dot [default: 0]
   -r, --radius RADIUS         dot radius in pixels [default: 5]
+      --opacity OPACITY       window opacity (0.0 - 1.0) [default: 1.0]
       --hide-highlight        start with highlighter hidden
       --show-cursor           start with cursor shown
 

highlight-pointer.c

@@ -97,7 +97,7 @@ static struct {
     int highlight_visible;
     int outline;
     int radius;
-    double opacity;  // Add opacity field
+    double opacity;
 } options;
 
 static void redraw();
@@ -188,7 +188,7 @@ static int init_window() {
         return 1;
     }
 
-    // Set window opacity
+    /* Set window opacity */
     unsigned long opacity_value = (unsigned long)(options.opacity * 0xFFFFFFFF);
     Atom opacity_atom = XInternAtom(dpy, "_NET_WM_WINDOW_OPACITY", False);
     XChangeProperty(dpy, win, opacity_atom, XA_CARDINAL, 32, PropModeReplace, (unsigned char*)&opacity_value, 1);