Patch from Mark Wooding to disable GTK's internal double buffering,

which I didn't know about, but which is clearly a waste of effort
since we keep our own backing pixmap for the puzzle window.

git-svn-id: svn://svn.tartarus.org/sgt/puzzles@8960 cda61777-01e9-0310-a592-d414129be87e

diff --git a/gtk.c b/gtk.c
index 694a41a..d551f47 100644 (file)
--- a/gtk.c
+++ b/gtk.c
@@ -1872,6 +1872,9 @@ static frontend *new_window(char *arg, int argtype, char **error)
        fe->statusbar = NULL;
 
     fe->area = gtk_drawing_area_new();
+#if GTK_CHECK_VERSION(2,0,0)
+    GTK_WIDGET_UNSET_FLAGS(fe->area, GTK_DOUBLE_BUFFERED);
+#endif
     get_size(fe, &x, &y);
     gtk_drawing_area_size(GTK_DRAWING_AREA(fe->area), x, y);
     fe->w = x;