Fixing and upgrading Fl_Preferences (#374)

* Added filename function to Fl_Preferences

Static function to get filename before opening.
Member to get filename after opening.
Bug fixes for memory mapped preferences.

* ERROR is a macro on Windows, don't use it

* Added Fl_Preferences::dirty().

User can now check if the database will be written
when flushed or destroyed.
Flush returns a crude error code.

* Fl_Preferences::get binary data returns # of bytes read.

* Verified group deletion code

* Fl_Preferences ignores locale.

This will make .prefs files interchangeable
between different computers.

* Updating the Preferences Mode to ignore locale.

* Fixes in docs.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/drivers/Darwin/Fl_Darwin_System_Driver.H b/src/drivers/Darwin/Fl_Darwin_System_Driver.H
index 7d076a9ce..8a2e3b7f6 100644
--- a/src/drivers/Darwin/Fl_Darwin_System_Driver.H
+++ b/src/drivers/Darwin/Fl_Darwin_System_Driver.H
@@ -45,6 +45,8 @@ public:
   virtual int single_arg(const char *arg);
   virtual int arg_and_value(const char *name, const char *value);
   virtual int clocale_printf(FILE *output, const char *format, va_list args);
+  virtual int clocale_snprintf(char *output, size_t output_size, const char *format, va_list args);
+  virtual int clocale_sscanf(const char *input, const char *format, va_list args);
   static void *get_carbon_function(const char *name);
   static int calc_mac_os_version(); // computes the fl_mac_os_version global variable
   static unsigned short *compute_macKeyLookUp();