Persian Calendar with Tray Icon

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;
using mytray.Properties;

namespace mytray
{
    public partial class Form_Settings : Form
    {
        public Form_Main FMain = null;
        public Form_Settings()
        {
            InitializeComponent();
        }

        private void checkBox_StartUp_CheckedChanged(object sender, EventArgs e)
        {
            RegistryKey run = Registry.CurrentUser.OpenSubKey("Software", true);
            run = run.OpenSubKey(@"Microsoft", true);
            run = run.OpenSubKey(@"Windows", true);
            run = run.OpenSubKey(@"CurrentVersion", true);
            run = run.OpenSubKey(@"Run", true);

            if (checkBox_StartUp.Checked == true)
                run.SetValue("PersianCalendar", Application.ExecutablePath);
            else
                try
                {
                    run.DeleteValue("PersianCalendar");
                }
                catch (Exception exp)
                {
                }
        }

        private void Form_Settings_Load(object sender, EventArgs e)
        {
            checkBox_StartUp.Checked=Settings.Default.StartUp;
            try
            {
                trackBar_Trans.Value = Settings.Default.Transparency;
                numericUpDown_Trans.Value = Settings.Default.Transparency * 10;
            }
            catch
            {
            }
            CPersianCalender theCalender = new CPersianCalender();
            for (int i = -2; i <= 2; i++)
            {
                theCalender.SetGhamariAdjust(i);
                int[] GhamariDate = theCalender.GetGhamariDate();
                string s = Convert.ToString(GhamariDate[2]) + " "
                              + theCalender.GetGamariMonthName(GhamariDate[1]) + " " + Convert.ToString(GhamariDate[0]);
                comboBox_Ghamari.Items.Add(s);


            }
            comboBox_Ghamari.SelectedIndex = Settings.Default.GhamariAdjust+2;
            
        }

        private void Form_Settings_FormClosed(object sender, FormClosedEventArgs e)
        {
         //   Properties.Settings.Default.Save();

        }

        private void Form_Settings_FormClosing(object sender, FormClosingEventArgs e)
        {

        }

        private void trackBar_Trans_Scroll(object sender, EventArgs e)
        {

        }

        private void trackBar_Trans_ValueChanged(object sender, EventArgs e)
        {
            numericUpDown_Trans.Value = trackBar_Trans.Value * 10;
        }

        private void numericUpDown_Trans_ValueChanged(object sender, EventArgs e)
        {
            trackBar_Trans.Value = (int)numericUpDown_Trans.Value / 10;
           // this.Opacity = (double)numericUpDown_Trans.Value;
        }

        private void buttonOk_Click(object sender, EventArgs e)
        {
            Settings.Default.StartUp = checkBox_StartUp.Checked;
            Settings.Default.Transparency = trackBar_Trans.Value;
            Settings.Default.GhamariAdjust = comboBox_Ghamari.SelectedIndex-2;
            Properties.Settings.Default.Save();
            foreach( Form f in  Application.OpenForms)
                if (f != this)
                {
                    f.Opacity = ((float)trackBar_Trans.Value) / 10;
                    
                }
            if (FMain != null)
                FMain.GhamariAdjust= Settings.Default.GhamariAdjust;
           Close();

        }

        private void buttonCancel_Click(object sender, EventArgs e)
        {
            Close();
        }
    }
}