Please describe the problem:
I read about using -DGSEAL_ENABLE when compiling a GTK+ application so  I decided to try it out on the project I work on called Wireshark.

I ran into a problem with GTK_WIDGET_SET_FLAGS.  The compiler error is: color_edit_dlg.c:481: error: 'struct _GtkObject' has no member named 'flags' - line 481 reads: GTK_WIDGET_SET_FLAGS (color_sel_ok, GTK_CAN_DEFAULT);

I cannot find an accessor function to modify the flags that isn't blocked by the GSEAL functionality.  Does one exist?  if not, could you add one? :)


Steps to reproduce:
For an application that uses GTK_WIDGET_SET_FLAGS:

1. Set CFLAGS to -DGSEAL_ENABLE 
2. (Re-)run the configure script
3. Wait for compiler error


Actual results:
I receive a compiler error such as the one mentioned in the description of this bug

Expected results:
One of two things: (a) The compiler happily keeps moving along since GTK_WIDGET_SET_FLAGS isn't deprecated from what I can tell or (b) I receive the error but am able to replace the call to GTK_WIDGET_SET_FLAGS with another function that will compile cleanly

Does this happen every time?
Yes.

Other information:
I'm using the latest GTK+ SVN revision as of this writing (21839).