mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-23 20:35:24 +00:00
2df9f5718d
Import win32 keyboard hooking code from project spice-gtk. This patch removes the extra left control key up/down input events inserted by Windows for the right alt key up/down input events with international keyboard layouts. Additionally there's some code to grab the keyboard. The next patches will use this code. Only Windows needs this. Signed-off-by: Volker Rümelin <vr_qemu@t-online.de> Message-id: 20200516072014.7766-1-vr_qemu@t-online.de Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or
|
|
* (at your option) any later version. See the COPYING file in the
|
|
* top-level directory.
|
|
*
|
|
* The win32 keyboard hooking code was imported from project spice-gtk.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "sysemu/sysemu.h"
|
|
#include "ui/win32-kbd-hook.h"
|
|
|
|
static Notifier win32_unhook_notifier;
|
|
static HHOOK win32_keyboard_hook;
|
|
static HWND win32_window;
|
|
static DWORD win32_grab;
|
|
|
|
static LRESULT CALLBACK keyboard_hook_cb(int code, WPARAM wparam, LPARAM lparam)
|
|
{
|
|
if (win32_window && code == HC_ACTION && win32_window == GetFocus()) {
|
|
KBDLLHOOKSTRUCT *hooked = (KBDLLHOOKSTRUCT *)lparam;
|
|
|
|
if (wparam != WM_KEYUP) {
|
|
DWORD dwmsg = (hooked->flags << 24) |
|
|
((hooked->scanCode & 0xff) << 16) | 1;
|
|
|
|
switch (hooked->vkCode) {
|
|
case VK_CAPITAL:
|
|
/* fall through */
|
|
case VK_SCROLL:
|
|
/* fall through */
|
|
case VK_NUMLOCK:
|
|
/* fall through */
|
|
case VK_LSHIFT:
|
|
/* fall through */
|
|
case VK_RSHIFT:
|
|
/* fall through */
|
|
case VK_RCONTROL:
|
|
/* fall through */
|
|
case VK_LMENU:
|
|
/* fall through */
|
|
case VK_RMENU:
|
|
break;
|
|
|
|
case VK_LCONTROL:
|
|
/*
|
|
* When pressing AltGr, an extra VK_LCONTROL with a special
|
|
* scancode with bit 9 set is sent. Let's ignore the extra
|
|
* VK_LCONTROL, as that will make AltGr misbehave.
|
|
*/
|
|
if (hooked->scanCode & 0x200) {
|
|
return 1;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
if (win32_grab) {
|
|
SendMessage(win32_window, wparam, hooked->vkCode, dwmsg);
|
|
return 1;
|
|
}
|
|
break;
|
|
}
|
|
|
|
} else {
|
|
switch (hooked->vkCode) {
|
|
case VK_LCONTROL:
|
|
if (hooked->scanCode & 0x200) {
|
|
return 1;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return CallNextHookEx(NULL, code, wparam, lparam);
|
|
}
|
|
|
|
static void keyboard_hook_unhook(Notifier *n, void *data)
|
|
{
|
|
UnhookWindowsHookEx(win32_keyboard_hook);
|
|
win32_keyboard_hook = NULL;
|
|
}
|
|
|
|
void win32_kbd_set_window(void *hwnd)
|
|
{
|
|
if (hwnd && !win32_keyboard_hook) {
|
|
/* note: the installing thread must have a message loop */
|
|
win32_keyboard_hook = SetWindowsHookEx(WH_KEYBOARD_LL, keyboard_hook_cb,
|
|
GetModuleHandle(NULL), 0);
|
|
if (win32_keyboard_hook) {
|
|
win32_unhook_notifier.notify = keyboard_hook_unhook;
|
|
qemu_add_exit_notifier(&win32_unhook_notifier);
|
|
}
|
|
}
|
|
|
|
win32_window = hwnd;
|
|
}
|
|
|
|
void win32_kbd_set_grab(bool grab)
|
|
{
|
|
win32_grab = grab;
|
|
}
|