Ctrl        *prev_sibling = nullptr;
	Ctrl        *next_sibling = nullptr;
	Ctrl        *children = nullptr;
	PackedData   attrs;

	byte         overpaint;

	bool         unicode:1;

	bool         fullrefresh:1;

	bool         transparent:1;
	bool         visible:1;
	bool         enabled:1;
	bool         wantfocus:1;
	bool         initfocus:1;
	bool         activepopup:1;
	bool         editable:1;
	bool         modify:1;
	bool         ignoremouse:1;
	bool         inframe:1;
	bool         inloop:1;
	bool         isopen:1;
	bool         popup:1;
	bool         popupgrab:1;
	byte         backpaint:2;//2

	bool         akv:1;
	bool         destroying:1;
	bool         layout_id_literal:1; // info_ptr points to layout char * literal, no heap involved
	bool         multi_frame:1; // there is more than single frame, they are stored in heap
	bool         top:1;
	bool         megarect:1; // support for large virtual screen area - SetRect > 16000

	static  Ptr<Ctrl> eventCtrl;