private void btnOK_Click(object sender, EventArgs e)
        {
            if (cmbFirstImage.SelectedItem != null && cmbSecondImage.SelectedItem != null)
            {
                Bitmap bmp1 = bitmaps[(string)cmbFirstImage.SelectedItem];
                Bitmap bmp2 = new Bitmap((Bitmap)bitmaps[(string)cmbSecondImage.SelectedItem], bmp1.Width, bmp1.Height);//(Bitmap)bitmaps[(string)cmbSecondImage.SelectedItem].Clone();
                //resultBmp = (Bitmap)bmp1.Clone();


                operationOnImage = new BasicImageOpertions(bmp2);
                operationOnImage.ToGreyScale();

                operationOnImage = new BasicImageOpertions(bmp1);

                if (rdbAdd.Checked)
                {
                    operationOnImage.ADD(bmp2);
                }
                else if (rdbSub.Checked)
                {
                    operationOnImage.SUB(bmp2);
                }
                else if (rdbDiff.Checked)
                {
                    operationOnImage.DIFF(bmp2);
                }
                else if (rdbOR.Checked)
                {
                    operationOnImage.OR(bmp2);
                }
                else if (rdbAND.Checked)
                {
                    operationOnImage.AND(bmp2);
                }
                else if (rdbXOR.Checked)
                {
                    operationOnImage.XOR(bmp2);
                }
                //else if (radioButtonAnd.Checked) And(bmp1, bmp2);
                //else if (radioButtonOr.Checked) Or(bmp1, bmp2);
                //else if (radioButtonXor.Checked) Xor(bmp1, bmp2);
            }
            foreach (Image_Panel form in forms)
            {
                form.Refresh();
                form.RemakeHistogram();
            }

            this.Close();
        }