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ps2: Don't send key release event for Lang1, Lang2 keys

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The scancodes for the Lang1 and Lang2 keys (i.e. Hangeul, Hanja) are
special since they already have the 0x80 bit set which is commonly used
to indicate a key release in AT set 1. Reportedly, real hardware does
not send a key release scancode. So, skip sending a release for these
keys. This ensures that Windows behaves correctly and interprets it as a
single keypress rather than two consecutive keypresses.

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Ross Lagerwall 2023-02-27 17:33:08 +00:00 committed by Daniel P. Berrangé
parent ac19b51678
commit 92f4a21d91
1 changed files with 6 additions and 0 deletions
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6
hw/input/ps2.c
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@ -402,6 +402,9 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
ps2_put_keycode(s, 0xaa); ps2_put_keycode(s, 0xaa);
} }
} }
} else if ((qcode == Q_KEY_CODE_LANG1 || qcode == Q_KEY_CODE_LANG2)
&& !key->down) {
/* Ignore release for these keys */
} else { } else {
if (qcode < qemu_input_map_qcode_to_atset1_len) { if (qcode < qemu_input_map_qcode_to_atset1_len) {
keycode = qemu_input_map_qcode_to_atset1[qcode]; keycode = qemu_input_map_qcode_to_atset1[qcode];
@ -497,6 +500,9 @@ static void ps2_keyboard_event(DeviceState *dev, QemuConsole *src,
ps2_put_keycode(s, 0x12); ps2_put_keycode(s, 0x12);
} }
} }
} else if ((qcode == Q_KEY_CODE_LANG1 || qcode == Q_KEY_CODE_LANG2) &&
!key->down) {
/* Ignore release for these keys */
} else { } else {
if (qcode < qemu_input_map_qcode_to_atset2_len) { if (qcode < qemu_input_map_qcode_to_atset2_len) {
keycode = qemu_input_map_qcode_to_atset2[qcode]; keycode = qemu_input_map_qcode_to_atset2[qcode];