add the functionality for window-window snapping

[chaz/openbox] / src / Screen.cc

diff --git a/src/Screen.cc b/src/Screen.cc
index 1bea9bae9999b4ebd3edd6c3b32723dcc850c89b..567516e7dc6fb91eae9c82f46dcc3e6e2c215ef5 100644 (file)
--- a/src/Screen.cc
+++ b/src/Screen.cc
@@ -1431,6 +1431,8 @@ void BScreen::raiseWindows(Window *workspace_stack, unsigned int num) {
 
 
 void BScreen::lowerDesktops(void) {
+  if (desktopWindowList.empty()) return;
+
   XLowerWindow(blackbox->getXDisplay(), desktopWindowList[0]);
   if (desktopWindowList.size() > 1)
     XRestackWindows(blackbox->getXDisplay(), &desktopWindowList[0],