Resolve "gtk_printer_get_hard_margins_for_paper_size() is not external"
The declaration in gtkprinter.h shall be preceded by GDK_AVAILABLE_IN_ALL, or else the function can't be used in application programs.
Closes #1140 (closed)
The declaration in gtkprinter.h shall be preceded by GDK_AVAILABLE_IN_ALL, or else the function can't be used in application programs.
Closes #1140 (closed)