From 6c45af855805feb5f195141f8c43a47d3cdc5717 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 4 Dec 2013 23:33:21 +0530
Subject: [PATCH] Error message when pasting with no img in the clipboard

---
 src/calibre/gui2/tweak_book/editor/canvas.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/calibre/gui2/tweak_book/editor/canvas.py b/src/calibre/gui2/tweak_book/editor/canvas.py
index fe15731326..92ecf0ff44 100644
--- a/src/calibre/gui2/tweak_book/editor/canvas.py
+++ b/src/calibre/gui2/tweak_book/editor/canvas.py
@@ -186,6 +186,9 @@ class Canvas(QWidget):
             img = QImage(md.imageData())
             if not img.isNull():
                 self.undo_stack.push(Replace(img, _('Paste image'), self))
+        else:
+            error_dialog(self, _('No image'), _(
+                'No image available in the clipboard'), show=True)
 
     def break_cycles(self):
         self.undo_stack.clear()