[fltk.general] Re: Simple way to copy fltk prefs to runtime prefs - Forums

void copyGroup_(Fl_Preferences& src, Fl_Preferences& dst)
{
      for (int i = 0; i < src.groups(); ++i) {
          Fl_Preferences s(src, i);
          Fl_Preferences d(dst, s.name());
          copyGroup_(s, d);
      }
      for (int i = 0; i < src.entries(); ++i) {
          const char* name = src.entry(i);
          char* data;
          src.get(name, data, "");
          dst.set(name, data);
          ::free(data);
      }
}

copyPrefs() {

Fl_Preferences srcFile(Fl_Preferences::USER, "fltk.org", "Hello");

Fl_Preferences dstFile("/Users/matt/test.cfg", "matthiasm.com", "export");

copyGroup_(srcFile, dstFile);

}

On Sunday, April 25, 2021 at 10:53:45 PM UTC+5:30 anmol....@gmail.com wrote:

prefsP_= new Fl_Preferences(Fl_Preferences::USER, vendor, product);
dataP_ = new Fl_Preferences(nullptr, "Runtime");

As we know, prefsP_ is written to HDD. dataP_ is only maintained in memory. In my code design, I'd like to make an identical copy of prefsP_ as runtime. The user can access these values without disk access and modify them as needed.

Only values that need to be saved will be written to HDD via prefsP_

Is there an API call like - copy (prefsP_, dataP_) or something similar ?