- Use IsDialogMessage function in message loop to enable Tab.
- Add WS_TABSTOP style to IDC_FONTCOMBO control.
- Set focus on create.
- Handle WM_KEYDOWN and WM_GETDLGCODE messages.
- Add UpdateCells, LimitCaretXY SetCaretXY, MoveUpDown, and MoveLeftRight helper functions.
- Delete DrawGrid, and DrawActiveCell functions for simplicity.
- Add and delete some members in MAP structure.
CORE-13806