#ifndef TDKPIN_DGROUP_H
#define TDKPIN_DGROUP_H

#include "tdkpin_win16.h"

/* DGROUP 1028:0586; assigned from HWND at TPWinCrt window-proc entry. */
extern HWND16 g_tpwincrt_window;

extern uint16_t g_tpwincrt_columns;                /* 1028:0540 */
extern uint16_t g_tpwincrt_rows;                   /* 1028:0542 */
extern uint16_t g_tpwincrt_cursor_column;          /* 1028:0544 */
extern uint16_t g_tpwincrt_cursor_row;             /* 1028:0546 */
extern uint16_t g_tpwincrt_view_column;            /* 1028:0548 */
extern uint16_t g_tpwincrt_view_row;               /* 1028:054a */
extern uint8_t g_tpwincrt_break_check_enabled;     /* 1028:0560 */
extern uint8_t g_tpwincrt_auto_scroll;             /* 1028:055e */
extern uint8_t g_tpwincrt_ctrl_z_is_eof;           /* 1028:055f */
extern uint16_t g_tpwincrt_input_count;            /* 1028:058a */
extern uint16_t g_tpwincrt_ring_row_origin;         /* 1028:0588 */
extern uint8_t g_tpwincrt_window_created;          /* 1028:058c */
extern uint8_t g_tpwincrt_has_focus;               /* 1028:058d */
extern uint8_t g_tpwincrt_caret_enabled;           /* 1028:058e */
extern uint8_t g_tpwincrt_paint_message_active;    /* 1028:058f */
extern Win16FarPtr g_tpwincrt_screen_buffer;       /* 1028:4ac2/4ac4 */
extern uint16_t g_tpwincrt_character_width;        /* 1028:4ace */
extern uint16_t g_tpwincrt_character_height;       /* 1028:4ad0 */
extern uint16_t g_tpwincrt_caret_y_offset;         /* 1028:4ad2 */
extern HDC16 g_tpwincrt_paint_dc;                  /* 1028:4ad4 */
extern PAINTSTRUCT16 g_tpwincrt_paint;             /* 1028:4ad6..4af5 */
extern HGDIOBJ16 g_tpwincrt_previous_font;         /* 1028:4af6 */
extern uint16_t g_tpwincrt_visible_columns;        /* 1028:4ac6 */
extern uint16_t g_tpwincrt_visible_rows;           /* 1028:4ac8 */
extern uint16_t g_tpwincrt_max_view_column;        /* 1028:4aca */
extern uint16_t g_tpwincrt_max_view_row;           /* 1028:4acc */
extern uint8_t g_tpwincrt_input_buffer[64];         /* 1028:4af8..4b37 */

enum TpWinCrtScrollCommand {
    TPWINCRT_SB_LINEUP = 0,
    TPWINCRT_SB_LINEDOWN = 1,
    TPWINCRT_SB_PAGEUP = 2,
    TPWINCRT_SB_PAGEDOWN = 3,
    TPWINCRT_SB_THUMBPOSITION = 4,
    TPWINCRT_SB_TOP = 6,
    TPWINCRT_SB_BOTTOM = 7,
};

#pragma pack(push, 1)
typedef struct {
    uint8_t virtual_key;
    uint8_t control_required;
    uint8_t vertical;
    uint8_t scroll_command;
} TpWinCrtKeyBinding;
#pragma pack(pop)

_Static_assert(sizeof(TpWinCrtKeyBinding) == 4, "TPWinCrt key binding layout drift");
extern const TpWinCrtKeyBinding g_tpwincrt_key_bindings[12]; /* 1028:0590..05bf */

#endif