2 files changed, 12 insertions, 7 deletions

diff --git a/src/FbTk/FbPixmap.cc b/src/FbTk/FbPixmap.cc
index 75dfe34..9143232 100644
--- a/src/FbTk/FbPixmap.cc
+++ b/src/FbTk/FbPixmap.cc
@@ -353,9 +353,10 @@ Pixmap FbPixmap::release() {
     return ret;
 }
 
-void FbPixmap::rootwinPropertyNotify(int screen_num, Atom atom) {
+// returns whether or not the background was changed
+bool FbPixmap::rootwinPropertyNotify(int screen_num, Atom atom) {
     if (!FbTk::Transparent::haveRender())
-        return;
+        return false;
 
     checkAtoms();
     for (int i=0; root_prop_ids[i] != 0; ++i) {
@@ -379,14 +380,16 @@ void FbPixmap::rootwinPropertyNotify(int screen_num, Atom atom) {
                 }
                 XFree(data);
                 if (root_pm != None)
-                    setRootPixmap(screen_num, root_pm);
+                    return setRootPixmap(screen_num, root_pm);
             }
-            break;
+            return false;
         }
     }
+    return false;
 }
 
-void FbPixmap::setRootPixmap(int screen_num, Pixmap pm) {
+// returns whether or not the background was changed
+bool FbPixmap::setRootPixmap(int screen_num, Pixmap pm) {
     if (!m_root_pixmaps) {
         m_root_pixmaps = new Pixmap[ScreenCount(display())];
         for (int i=0; i < ScreenCount(display()); ++i)
@@ -396,7 +399,9 @@ void FbPixmap::setRootPixmap(int screen_num, Pixmap pm) {
     if (m_root_pixmaps[screen_num] != pm) {
         m_root_pixmaps[screen_num] = pm;
         FbWindow::updatedAlphaBackground(screen_num);
+        return true;
     }
+    return false;
 }
 
 Pixmap FbPixmap::getRootPixmap(int screen_num, bool force_update) {
diff --git a/src/FbTk/FbPixmap.hh b/src/FbTk/FbPixmap.hh
index dab364a..acae07e 100644
--- a/src/FbTk/FbPixmap.hh
+++ b/src/FbTk/FbPixmap.hh
@@ -70,8 +70,8 @@ public:
     inline unsigned int depth() const { return m_depth; }
 
     static Pixmap getRootPixmap(int screen_num, bool force_update=false);
-    static void setRootPixmap(int screen_num, Pixmap pm);
-    static void rootwinPropertyNotify(int screen_num, Atom atom);
+    static bool setRootPixmap(int screen_num, Pixmap pm);
+    static bool rootwinPropertyNotify(int screen_num, Atom atom);
 
     void create(Drawable src,
                 unsigned int width, unsigned int height,