VARCem/PDCurses
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Return modifier keys for DOS. This works like the Win32 version,

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returning only on key up, if no other key was pressed. For some reason I
can't quite figure out, it fails to report the first instance.
This commit is contained in:
William McBrine
2006-11-17 14:44:10 +00:00
parent bb029e0b31
commit dacfb18eb7
1 changed files with 96 additions and 33 deletions
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129
dos/pdckbd.c
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@@ -19,7 +19,7 @@
#include "pdcdos.h"
RCSID("$Id: pdckbd.c,v 1.54 2006/11/17 12:10:20 wmcbrine Exp $");
RCSID("$Id: pdckbd.c,v 1.55 2006/11/17 14:44:10 wmcbrine Exp $");
/************************************************************************
* Table for key code translation of function keys in keypad mode *
@@ -108,8 +108,12 @@ static int kptab[] =
unsigned long pdc_key_modifiers = 0L;
static bool mouse_avail = FALSE, mouse_vis = FALSE, mouse_moved = FALSE;
static bool mouse_avail = FALSE, mouse_vis = FALSE, mouse_moved = FALSE,
key_pressed = FALSE;
static PDCREGS ms_regs, old_ms;
static unsigned short shift_status, old_shift = 0;
static unsigned char keyboard_function = 0xff, shift_function = 0xff;
/*man-start**************************************************************
@@ -161,8 +165,42 @@ void PDC_set_keyboard_binary(bool on)
bool PDC_check_bios_key(void)
{
PDCREGS regs;
PDC_LOG(("PDC_check_bios_key() - called\n"));
if (shift_function == 0xff)
{
int scan;
/* get shift status for all keyboards */
regs.h.ah = 0x02;
PDCINT(0x16, regs);
scan = regs.h.al;
/* get shift status for enhanced keyboards */
regs.h.ah = 0x12;
PDCINT(0x16, regs);
if (scan == regs.h.al && getdosmembyte(0x496) == 0x10)
{
keyboard_function = 0x10;
shift_function = 0x12;
}
else
{
keyboard_function = 0;
shift_function = 2;
}
}
regs.h.ah = shift_function;
PDCINT(0x16, regs);
shift_status = regs.W.ax;
if (mouse_vis)
{
ms_regs.W.ax = 3;
@@ -177,6 +215,16 @@ bool PDC_check_bios_key(void)
return TRUE;
}
if (old_shift && !shift_status)
{
if (!key_pressed && SP->return_key_modifiers)
return TRUE;
key_pressed = FALSE;
}
old_shift = shift_status;
return kbhit();
}
@@ -198,7 +246,6 @@ int PDC_get_bios_key(void)
{
PDCREGS regs;
int key, scan, *scanp;
static unsigned char keyboard_function = 0xFF;
pdc_key_modifiers = 0;
@@ -242,18 +289,15 @@ int PDC_get_bios_key(void)
old_ms = ms_regs;
/* get shift status for all keyboards */
/* Set shift modifiers */
regs.h.ah = 0x02;
PDCINT(0x16, regs);
if (regs.h.al & 0x03)
if (shift_status & 3)
shift_flags |= BUTTON_SHIFT;
if (regs.h.al & 0x04)
if (shift_status & 4)
shift_flags |= BUTTON_CONTROL;
if (regs.h.al & 0x8)
if (shift_status & 8)
shift_flags |= BUTTON_ALT;
if (pdc_mouse_status.changes & 1)
@@ -265,28 +309,52 @@ int PDC_get_bios_key(void)
if (pdc_mouse_status.changes & 4)
pdc_mouse_status.button[2] |= shift_flags;
key_pressed = TRUE;
old_shift = shift_status;
SP->key_code = TRUE;
return KEY_MOUSE;
}
}
if (keyboard_function == 0xFF)
if (old_shift && !shift_status)
{
/* get shift status for all keyboards */
key = -1;
regs.h.ah = 0x02;
PDCINT(0x16, regs);
scan = regs.h.al;
if (old_shift & 1)
key = KEY_SHIFT_R;
/* get shift status for enhanced keyboards */
if (old_shift & 2)
key = KEY_SHIFT_L;
regs.h.ah = 0x12;
PDCINT(0x16, regs);
if (shift_function == 0x12)
{
if (old_shift & 0x400)
key = KEY_CONTROL_R;
if (scan == regs.h.al && getdosmembyte(0x496) == 0x10)
keyboard_function = 0x10;
if (old_shift & 0x100)
key = KEY_CONTROL_L;
if (old_shift & 0x800)
key = KEY_ALT_R;
if (old_shift & 0x200)
key = KEY_ALT_L;
}
else
keyboard_function = 0;
{
if (old_shift & 4)
key = KEY_CONTROL_R;
if (old_shift & 8)
key = KEY_ALT_R;
}
key_pressed = FALSE;
old_shift = shift_status;
SP->key_code = TRUE;
return key;
}
regs.h.ah = keyboard_function;
@@ -296,21 +364,16 @@ int PDC_get_bios_key(void)
if (SP->save_key_modifiers)
{
/* get shift status for all keyboards */
regs.h.ah = 0x02;
PDCINT(0x16, regs);
if (regs.h.al & 0x03)
if (shift_status & 3)
pdc_key_modifiers |= PDC_KEY_MODIFIER_SHIFT;
if (regs.h.al & 0x04)
if (shift_status & 4)
pdc_key_modifiers |= PDC_KEY_MODIFIER_CONTROL;
if (regs.h.al & 0x08)
if (shift_status & 8)
pdc_key_modifiers |= PDC_KEY_MODIFIER_ALT;
if (regs.h.al & 0x20)
if (shift_status & 0x20)
pdc_key_modifiers |= PDC_KEY_MODIFIER_NUMLOCK;
}
@@ -363,6 +426,8 @@ int PDC_get_bios_key(void)
else if (key == 0x00 || (key == 0xe0 && scan > 53 && scan != 86))
key = scan << 8;
key_pressed = TRUE;
/* normal character */
SP->key_code = ((unsigned)key >= 256);
@@ -518,7 +583,5 @@ int PDC_mouse_set(void)
int PDC_modifiers_set(void)
{
bool old_rkm = SP->return_key_modifiers;
SP->return_key_modifiers = FALSE;
return old_rkm ? ERR : OK;
return OK;
}