master 35928918d1: Look for DND proxies on the root window as well

[Po Lu]

branch: master
commit 35928918d1406e61a982e7a036cc6c441484b4cc
Author: Po Lu <luangruo@yahoo.com>
Commit: Po Lu <luangruo@yahoo.com>

    Look for DND proxies on the root window as well
    
    * src/xterm.c (x_dnd_get_target_window): If nothing was found on
    the COW, look at the root window.
---
 src/xterm.c | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/xterm.c b/src/xterm.c
index 8a7a49c883..e7c671de74 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -2653,8 +2653,23 @@ x_dnd_get_target_window (struct x_display_info *dpyinfo,
        }
 #endif
 
-      /* No toplevel was found and the overlay window was not a proxy,
-        so return None.  */
+      /* Now look for an XdndProxy on the root window.  */
+
+      proxy = x_dnd_get_window_proxy (dpyinfo, dpyinfo->root_window);
+
+      if (proxy != None)
+       {
+         proto = x_dnd_get_window_proto (dpyinfo, dpyinfo->root_window);
+
+         if (proto != -1)
+           {
+             *proto_out = proto;
+             return proxy;
+           }
+       }
+
+      /* No toplevel was found and the overlay and root windows were
+        not proxies, so return None.  */
       *proto_out = -1;
       return None;
     }