class ShBtnEditButton;
class ShBtnTextDialog;
class ShBtnTextOK;
class ShBtnEditButton;
class ShBtnTextDialog;
class ShBtnTextOK;
class ShBtnErrWarn;
class ShBtnTextWindow;
class ShBtnPrefItem;
class ShBtnErrWarn;
class ShBtnTextWindow;
class ShBtnPrefItem;