public PPDPreviewClothes() { try { if (theInstance != null) { theInstance.Close(); theInstance = null; return; } theInstance = this; InitializeComponent(); Gui.Docking.ShowDockContent(this, Gui.Docking.DockQuickAccess, ContentCategory.None); this.FormClosing += new FormClosingEventHandler(FormOpenedFiles_FormClosing); } catch (Exception ex) { Utility.ReportException(ex); } }