Don't show a progress bar when previewing for the Qt print dialog.

We don't do much work to do that - we don't print anything before the
first selected page, and once we're finished generating that page, we
terminate the printing process - so it shouldn't need a progress bar.
(If it needs a progress bar, We Have A Problem, as that slows down the
drawing of the dialog box.)

This should prevent the problem seen in bug 12040.

Bug: 12040
Change-Id: I129191e06fff3e1eb59a9631c7395b9e7f650809
Reviewed-on: https://code.wireshark.org/review/14255
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 3 insertions, 1 deletions

diff --git a/file.h b/file.h
index 2403e24707..a52f9a454e 100644
--- a/file.h
+++ b/file.h
@@ -420,9 +420,11 @@ void cf_timestamp_auto_precision(capture_file *cf);
  *
  * @param cf the capture file
  * @param print_args the arguments what and how to print
+ * @param show_progress_bar TRUE if a progress bar is to be shown
  * @return one of cf_print_status_t
  */
-cf_print_status_t cf_print_packets(capture_file *cf, print_args_t *print_args);
+cf_print_status_t cf_print_packets(capture_file *cf, print_args_t *print_args,
+                                   gboolean show_progress_bar);
 
 /**
  * Print (export) the capture file into PDML format.