function OnInit(initData)
{
	initData.name = "CloseConfirm";
	initData.version = "1.0";
	initData.copyright = "(c) 2020 Leo Davidson";
	initData.url = "https://resource.dopus.com/t/confirm-before-closing-lister-window/34600";
	initData.desc = "";
	initData.default_enable = true;
	initData.min_version = "12.0";
}

function OnCloseLister(closeListerData)
{
	// Is Opus, or Windows, being shutdown completely?
	if (closeListerData.shutdown)
	{
		return false; // Don't block closing the window.
	}

	// Are any qualifier keys held down?
	if (closeListerData.qualifiers != "none")
	{
		return false; // Don't block closing the window.
	}
	
	var dlg = closeListerData.lister.Dlg();
	
	var choice = dlg.Request("Are you sure you want to close the window?", "Close|Cancel", "Close Lister");
	
	if (choice == 1)
	{
		return false; // Don't block closing the window.
	}

	return true; // Block closing the window.
}