This class holds information on size changes generated by Pt_CB_TERM_RESIZE and Pt_CB_TERM_RESIZED callbacks, as well as the Pt_CB_TTY_DEVSIZE callback used by PtTty.
For detailed information, please refer to Pt_CB_TERM_RESIZE in the PtTerminal section and Pt_CB_TTY_DEVSIZE in the PtTty section of the Photon documentation.
A PhPoint indicating the new size of the terminal.
A PhPoint indicating the former size of the terminal.