/**
* Set current state of a keyboard modifier.
*
* @param idModifier Modifier to set (VK_CAPITAL, VK_SCROLL or VK_NUMLOCK)
* @param fState State to set
*/
static void winSetModifierState(int idModifier, bool fState)
{
AssertReturnVoid((idModifier == VK_CAPITAL) || (idModifier == VK_SCROLL) || (idModifier == VK_NUMLOCK));
/* If the modifier is already in desired state, just do nothing. Otherwise, toggle it. */
if (winGetModifierState(idModifier) != fState)
{
/* Simulate KeyUp+KeyDown keystroke */
keybd_event(idModifier, 0, KEYEVENTF_EXTENDEDKEY, 0);
keybd_event(idModifier, 0, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
/* Process posted above keyboard events immediately: */
MSG msg;
while (::PeekMessage(&msg, NULL, WM_KEYFIRST, WM_KEYLAST, PM_REMOVE))
::DispatchMessage(&msg);
LogRel2(("HID LEDs sync: setting %s state to %s (0x%X).\n",
VBOX_CONTROL_TO_STR_NAME(idModifier), VBOX_BOOL_TO_STR_STATE(fState), MapVirtualKey(idModifier, MAPVK_VK_TO_VSC)));
}
else
{
LogRel2(("HID LEDs sync: setting %s state: skipped: state is already %s (0x%X).\n",
VBOX_CONTROL_TO_STR_NAME(idModifier), VBOX_BOOL_TO_STR_STATE(fState), MapVirtualKey(idModifier, MAPVK_VK_TO_VSC)));
}
}
/**
* Broadcast HID modifier states.
*
* @param fNumLockOn NUM LOCK state
* @param fCapsLockOn CAPS LOCK state
* @param fScrollLockOn SCROLL LOCK state
*/
void WinHidDevicesBroadcastLeds(bool fNumLockOn, bool fCapsLockOn, bool fScrollLockOn)
{
LogRel2(("HID LEDs sync: start broadcast guest modifier states: NUM(%s) CAPS(%s) SCROLL(%s)\n",
VBOX_BOOL_TO_STR_STATE(fNumLockOn),
VBOX_BOOL_TO_STR_STATE(fCapsLockOn),
VBOX_BOOL_TO_STR_STATE(fScrollLockOn)));
if (winSetHidLeds(fNumLockOn, fCapsLockOn, fScrollLockOn))
LogRel2(("HID LEDs sync: broadcast completed\n"));
else
LogRel2(("HID LEDs sync: broadcast failed\n"));
}
/**
* Restore host modifier states and free memory.
*/
void WinHidDevicesApplyAndReleaseLedsState(void *pData)
{
VBoxModifiersState_t *pState = (VBoxModifiersState_t *)pData;
if (pState)
{
LogRel2(("HID LEDs sync: attempt to restore host state: NUM(%s) CAPS(%s) SCROLL(%s)\n",
VBOX_BOOL_TO_STR_STATE(pState->fNumLockOn),
VBOX_BOOL_TO_STR_STATE(pState->fCapsLockOn),
VBOX_BOOL_TO_STR_STATE(pState->fScrollLockOn)));
if (winSetHidLeds(pState->fNumLockOn, pState->fCapsLockOn, pState->fScrollLockOn))
LogRel2(("HID LEDs sync: host state restored\n"));
else
LogRel2(("HID LEDs sync: host state restore failed\n"));
free(pState);
}
}
/**
* Set current state of a keyboard modifier.
*
* @param idModifier Modifier to set (VK_CAPITAL, VK_SCROLL or VK_NUMLOCK)
* @param fState State to set
*/
static void winSetModifierState(int idModifier, bool fState)
{
AssertReturnVoid((idModifier == VK_CAPITAL) || (idModifier == VK_SCROLL) || (idModifier == VK_NUMLOCK));
/* If the modifier is already in desired state, just do nothing. Otherwise, toggle it. */
if (winGetModifierState(idModifier) != fState)
{
/* Simulate KeyUp+KeyDown keystroke */
keybd_event(idModifier, 0, KEYEVENTF_EXTENDEDKEY, 0);
keybd_event(idModifier, 0, KEYEVENTF_EXTENDEDKEY | KEYEVENTF_KEYUP, 0);
LogRel2(("HID LEDs sync: setting %s state to %s (0x%X).\n",
VBOX_CONTROL_TO_STR_NAME(idModifier), VBOX_BOOL_TO_STR_STATE(fState), MapVirtualKey(idModifier, MAPVK_VK_TO_VSC)));
}
else
{
LogRel2(("HID LEDs sync: setting %s state: skipped: state is already %s (0x%X).\n",
VBOX_CONTROL_TO_STR_NAME(idModifier), VBOX_BOOL_TO_STR_STATE(fState), MapVirtualKey(idModifier, MAPVK_VK_TO_VSC)));
}
}
/**
* Allocate memory and store modifier states there.
*
* @returns allocated memory witch contains modifier states or NULL.
*/
void * WinHidDevicesKeepLedsState(void)
{
VBoxModifiersState_t *pState;
pState = (VBoxModifiersState_t *)malloc(sizeof(VBoxModifiersState_t));
if (pState)
{
pState->fNumLockOn = winGetModifierState(VK_NUMLOCK);
pState->fCapsLockOn = winGetModifierState(VK_CAPITAL);
pState->fScrollLockOn = winGetModifierState(VK_SCROLL);
LogRel2(("HID LEDs sync: host state captured: NUM(%s) CAPS(%s) SCROLL(%s)\n",
VBOX_BOOL_TO_STR_STATE(pState->fNumLockOn),
VBOX_BOOL_TO_STR_STATE(pState->fCapsLockOn),
VBOX_BOOL_TO_STR_STATE(pState->fScrollLockOn)));
return (void *)pState;
}
LogRel2(("HID LEDs sync: unable to allocate memory for HID LEDs synchronization data. LEDs sync will be disabled.\n"));
return NULL;
}
