diff options
Diffstat (limited to 'mousetsr.c')
| -rw-r--r-- | mousetsr.c | 33 |
1 files changed, 27 insertions, 6 deletions
@@ -1057,6 +1057,7 @@ static void reset_mouse_state() memset(data.cursor_prev_graphic, 0, sizeof(data.cursor_prev_graphic)); } +/** Return (in the appropiate registers) the wheel movement counter and afterwards reset it. */ static void return_clear_wheel_counter(union INTPACK __far *r) { r->w.cx = snap_to_grid(data.wheel_last.x, data.screen_granularity.x); @@ -1065,6 +1066,7 @@ static void return_clear_wheel_counter(union INTPACK __far *r) data.wheel_delta = 0; } +/** Return (in the appropiate registers) the desired button press counter and afterwards reset it. */ static void return_clear_button_counter(union INTPACK __far *r, struct buttoncounter *c) { r->w.cx = snap_to_grid(c->last.x, data.screen_granularity.x); @@ -1073,6 +1075,20 @@ static void return_clear_button_counter(union INTPACK __far *r, struct buttoncou c->count = 0; } +/** Get the size of the initial part of TSRDATA that should be saved/restored + * by programs who want to preserve the mouse driver status. */ +static unsigned int get_mouse_status_size() +{ +#if USE_VIRTUALBOX + // Programs don't have to preserve the contents of the VirtualBox buffer. + // It only needs to be preserved if we are going to be preempted in the middle + // of a VirtualBox call, and that may only happen under Windows 386. + return sizeof(data) - VBOX_BUFFER_SIZE; +#else + return sizeof(data); +#endif +} + /** Entry point for our int33 API. */ static void int33_handler(union INTPACK r) #pragma aux int33_handler "*" parm caller [] modify [ax bx cx dx si di es fs gs] @@ -1232,16 +1248,21 @@ static void int33_handler(union INTPACK r) } break; case INT33_GET_MOUSE_STATUS_SIZE: - dputs("Mouse get status size"); - r.w.bx = sizeof(TSRDATA); + dprintf("Mouse get status size required=%u\n", get_mouse_status_size()); + r.w.bx = get_mouse_status_size(); break; case INT33_SAVE_MOUSE_STATUS: - dputs("Mouse save status"); - _fmemcpy(MK_FP(r.w.es, r.w.dx), &data, sizeof(TSRDATA)); + dprintf("Mouse save status size=%u/required=%u\n", r.w.bx, get_mouse_status_size()); + hide_cursor(); + _fmemcpy(MK_FP(r.w.es, r.w.dx), &data, get_mouse_status_size()); + refresh_cursor(); break; case INT33_LOAD_MOUSE_STATUS: - dputs("Mouse load status"); - _fmemcpy(&data, MK_FP(r.w.es, r.w.dx), sizeof(TSRDATA)); + dprintf("Mouse load status size=%u/required=%u\n", r.w.bx, get_mouse_status_size()); + _fmemcpy(&data, MK_FP(r.w.es, r.w.dx), get_mouse_status_size()); + refresh_video_info(); + load_cursor(); + refresh_cursor(); break; case INT33_SET_MOUSE_SENSITIVITY: dprintf("Mouse set sensitivity x=%d y=%d threshold=%d\n", |