wxTL_CHECKBOX = 0x0002, // Show checkboxes in the first column.
wxTL_3STATE = 0x0004, // Allow 3rd state in checkboxes.
wxTL_USER_3STATE = 0x0008, // Allow user to set 3rd state.
wxTL_CHECKBOX = 0x0002, // Show checkboxes in the first column.
wxTL_3STATE = 0x0004, // Allow 3rd state in checkboxes.
wxTL_USER_3STATE = 0x0008, // Allow user to set 3rd state.