private void ImportFontMenuItem_Click(object sender, EventArgs e)
        {
            if (SelectedImageMetadata.Count == 0)
            {
                return;
            }

            using (var importFontWindow = new ImportFontWindow(SelectedImageMetadata))
            {
                if (importFontWindow.ShowDialog() != DialogResult.OK)
                {
                    return;
                }

                var importedData = importFontWindow.GetImportedData();
                foreach (var imageDataTuple in importedData)
                {
                    var metadata  = imageDataTuple.Item1;
                    var imageData = imageDataTuple.Item2;

                    ProcessImage(x => imageData, metadata);
                }
                ImageCacheManager.RebuildCache(m_firmware);
                ImageListBox.Invalidate();
                ImageListBox_SelectedValueChanged(ImageListBox, EventArgs.Empty);
            }
        }
        private void ImportFontMenuItem_Click(object sender, EventArgs e)
        {
            if (SelectedImageMetadata.Count == 0) return;

            using (var importFontWindow = new ImportFontWindow(SelectedImageMetadata))
            {
                if (importFontWindow.ShowDialog() != DialogResult.OK) return;

                var importedData = importFontWindow.GetImportedData();
                foreach (var imageDataTuple in importedData)
                {
                    var metadata = imageDataTuple.Item1;
                    var imageData = imageDataTuple.Item2;

                    ProcessImage(x => imageData, metadata);
                }
                ImageCacheManager.RebuildCache(m_firmware);
                ImageListBox.Invalidate();
                ImageListBox_SelectedValueChanged(ImageListBox, EventArgs.Empty);
            }
        }