making sure it is only breaking at newlines for measuring

[wxWidgets.git] / src / gtk / clipbrd.cpp

diff --git a/src/gtk/clipbrd.cpp b/src/gtk/clipbrd.cpp
index 1bda9b97d245d9949f719bb751684c9c5e3fdde9..0067d971bc3ab1d54ce5257473067574e9d2bdcc 100644 (file)
--- a/src/gtk/clipbrd.cpp
+++ b/src/gtk/clipbrd.cpp
@@ -395,11 +395,8 @@ void wxClipboard::Clear()
             while (m_waiting) gtk_main_iteration();
         }
 
-        if (m_data)
-        {
-            delete m_data;
-            m_data = (wxDataObject*) NULL;
-        }
+        delete m_data;
+        m_data = NULL;
 
 #if wxUSE_THREADS
         /* re-enable GUI threads */
@@ -633,8 +630,25 @@ bool wxClipboard::GetData( wxDataObject& data )
 
         while (m_waiting) gtk_main_iteration();
 
-        /* this is a true error as we checked for the presence of such data before */
-        wxCHECK_MSG( m_formatSupported, false, wxT("error retrieving data from clipboard") );
+        /*
+           Normally this is a true error as we checked for the presence of such
+           data before, but there are applications that may return an empty
+           string (e.g. Gnumeric-1.6.1 on Linux if an empty cell is copied)
+           which would produce a false error message here, so we check for the
+           size of the string first. In ansi, GetDataSize returns an extra
+           value (for the closing null?), with unicode, the exact number of
+           tokens is given (that is more than 1 for special characters)
+           (tested with Gnumeric-1.6.1 and OpenOffice.org-2.0.2)
+         */
+#if wxUSE_UNICODE
+        if ( format != wxDF_UNICODETEXT || data.GetDataSize(format) > 0 )
+#else // !UNICODE
+        if ( format != wxDF_TEXT || data.GetDataSize(format) > 1 )
+#endif // UNICODE / !UNICODE
+        {
+            wxCHECK_MSG( m_formatSupported, false,
+                         wxT("error retrieving data from clipboard") );
+        }
 
         /* return success */
         delete[] array;