--- lbbs/include/screen.h	2025/05/15 14:17:53	1.4
+++ lbbs/include/screen.h	2025/06/09 15:39:30	1.15
@@ -17,17 +17,27 @@
 #ifndef _SCREEN_H_
 #define _SCREEN_H_
 
-extern int screen_rows;
-extern int screen_cols;
+#include <stddef.h>
 
-extern void moveto(int row, int col);
+#define CTRL_SEQ_CLR_LINE "\033[K"
+#define MSG_EXT_MAX_LEN 200
 
-extern void clrtoeol();
+struct display_ctx_t
+{
+   int reach_begin;
+   int reach_end;
+   long line_top;
+   long line_bottom;
+   char msg[MSG_EXT_MAX_LEN];
+};
+typedef struct display_ctx_t DISPLAY_CTX;
 
-extern void clrline(int line_begin, int line_end);
+typedef int (*display_data_key_handler)(int *p_key, DISPLAY_CTX *p_ctx);
 
+extern void moveto(int row, int col);
+extern void clrtoeol();
+extern void clrline(int line_begin, int line_end);
 extern void clrtobot(int line_begin);
-
 extern void clearscr();
 
 extern int press_any_key();
@@ -35,14 +45,17 @@ extern int press_any_key();
 extern void set_input_echo(int echo);
 
 extern int str_input(char *buffer, int buffer_length, int echo_mode);
-
 extern int get_data(int row, int col, char *prompt, char *buffer, int buffer_length, int echo_mode);
 
-extern int display_file_ex(const char *filename, int begin_line, int wait);
-
-extern int show_top(char *status);
+// eof_exit = 0 : Do not exit at EOF
+//            1 : Prompt for any key at EOF, then exit
+//            2 : Exit at EOF without prompt
+extern int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
+                        display_data_key_handler key_handler, const char *help_filename);
+extern int display_file(const char *filename, int eof_exit);
 
-extern int show_bottom(char *msg);
+extern int show_top(const char *str_left, const char *str_center, const char *str_right);
+extern int show_bottom(const char *msg);
 
 extern int show_active_board();