wxWidgets defines a special identifier value wxID_ANY which is used in the following two situations:
Another standard special identifier value is wxID_NONE: this is a value which is not matched by any other id.
wxWidgets also defines a few standard command identifiers which may be used by the user code and also are sometimes used by wxWidgets itself. These reserved identifiers are all in the range between wxID_LOWEST and wxID_HIGHEST and, accordingly, the user code should avoid defining its own constants in this range.
wxID_LOWEST = 4999, wxID_OPEN, wxID_CLOSE, wxID_NEW, wxID_SAVE, wxID_SAVEAS, wxID_REVERT, wxID_EXIT, wxID_UNDO, wxID_REDO, wxID_HELP, wxID_PRINT, wxID_PRINT_SETUP, wxID_PAGE_SETUP, wxID_PREVIEW, wxID_ABOUT, wxID_HELP_CONTENTS, wxID_HELP_INDEX, wxID_HELP_SEARCH, wxID_HELP_COMMANDS, wxID_HELP_PROCEDURES, wxID_HELP_CONTEXT, wxID_CLOSE_ALL, wxID_EDIT = 5030, wxID_CUT, wxID_COPY, wxID_PASTE, wxID_CLEAR, wxID_FIND, wxID_DUPLICATE, wxID_SELECTALL, wxID_DELETE, wxID_REPLACE, wxID_REPLACE_ALL, wxID_PROPERTIES, wxID_VIEW_DETAILS, wxID_VIEW_LARGEICONS, wxID_VIEW_SMALLICONS, wxID_VIEW_LIST, wxID_VIEW_SORTDATE, wxID_VIEW_SORTNAME, wxID_VIEW_SORTSIZE, wxID_VIEW_SORTTYPE, wxID_FILE = 5050, wxID_FILE1, wxID_FILE2, wxID_FILE3, wxID_FILE4, wxID_FILE5, wxID_FILE6, wxID_FILE7, wxID_FILE8, wxID_FILE9, // Standard button IDs wxID_OK = 5100, wxID_CANCEL, wxID_APPLY, wxID_YES, wxID_NO, wxID_STATIC, wxID_FORWARD, wxID_BACKWARD, wxID_DEFAULT, wxID_MORE, wxID_SETUP, wxID_RESET, wxID_CONTEXT_HELP, wxID_YESTOALL, wxID_NOTOALL, wxID_ABORT, wxID_RETRY, wxID_IGNORE, wxID_UP, wxID_DOWN, wxID_HOME, wxID_REFRESH, wxID_STOP, wxID_INDEX, wxID_BOLD, wxID_ITALIC, wxID_JUSTIFY_CENTER, wxID_JUSTIFY_FILL, wxID_JUSTIFY_RIGHT, wxID_JUSTIFY_LEFT, wxID_UNDERLINE, wxID_INDENT, wxID_UNINDENT, wxID_ZOOM_100, wxID_ZOOM_FIT, wxID_ZOOM_IN, wxID_ZOOM_OUT, wxID_UNDELETE, wxID_REVERT_TO_SAVED, // System menu IDs (used by wxUniv): wxID_SYSTEM_MENU = 5200, wxID_CLOSE_FRAME, wxID_MOVE_FRAME, wxID_RESIZE_FRAME, wxID_MAXIMIZE_FRAME, wxID_ICONIZE_FRAME, wxID_RESTORE_FRAME, // IDs used by generic file dialog (13 consecutive starting from this value) wxID_FILEDLGG = 5900, wxID_HIGHEST = 5999