+
+ /* store requested format to be asked for by callbacks */
+ m_targetRequested = format;
+
+ wxCHECK_MSG( m_targetRequested, FALSE, wxT("invalid clipboard format") );
+
+ m_formatSupported = FALSE;
+
+ /* perform query. this will set m_formatSupported to
+ TRUE if m_targetRequested is supported.
+ also, we have to wait for the "answer" from the
+ clipboard owner which is an asynchronous process.
+ therefore we set m_waiting = TRUE here and wait
+ until the callback "targets_selection_received"
+ sets it to FALSE */
+
+ m_waiting = TRUE;
+
+ gtk_selection_convert( m_targetsWidget,
+ m_usePrimary ? (GdkAtom)GDK_SELECTION_PRIMARY
+ : g_clipboardAtom,
+ g_targetsAtom,
+ GDK_CURRENT_TIME );
+
+ while (m_waiting) gtk_main_iteration();
+
+ if (!m_formatSupported) continue;