BOOL _SetTaskmanWindow(PWND pwnd) {
PDESKTOPINFO pdeskinfo = GETDESKINFO(PtiCurrent());
if (pwnd != NULL) {
// Fail the call if another shell window exists
if (pdeskinfo->spwndTaskman != NULL)
return(FALSE);
}
Lock(&pdeskinfo->spwndTaskman, pwnd);
return(TRUE);
}
BOOL xxxDoHotKeyStuff(
UINT vk,
BOOL fBreak,
DWORD fsReserveKeys)
{
#ifdef WINDOWS_NOT_HOT
static BOOL fOnlyWinKey = FALSE;
#endif
static UINT fsModifiers = 0;
static UINT fsModOnlyCandidate = 0;
UINT fsModOnlyHotkey;
UINT fs;
PHOTKEY phk;
PWND pwnd;
BOOL fCancel;
BOOL fEatDebugKeyBreak = FALSE;
CheckCritIn();
/*
* Update fsModifiers.
*/
fs = 0;
fsModOnlyHotkey = 0;
switch (vk) {
case VK_RSHIFT:
fs = MOD_RSHIFT;
case VK_LSHIFT:
case VK_SHIFT:
vk = VK_SHIFT;
fs |= MOD_SHIFT;
break;
case VK_RCONTROL:
fs = MOD_RCONTROL;
case VK_LCONTROL:
vk = VK_CONTROL;
case VK_CONTROL:
fs |= MOD_CONTROL;
break;
case VK_RMENU:
fs = MOD_RALT;
case VK_LMENU:
vk = VK_MENU;
case VK_MENU:
fs |= MOD_ALT;
break;
case VK_LWIN:
case VK_RWIN:
fs = MOD_WIN;
break;
default:
/*
* A non-modifier key rules out Modifier-Only hotkeys
*/
fsModOnlyCandidate = 0;
break;
}
if (fBreak) {
fsModifiers &= ~fs;
/*
* If a modifier key is coming up, the current modifier only hotkey
* candidate must be tested to see if it is a hotkey. Store this
* in fsModOnlyHotkey, and prevent the next key release from
* being a candidate by clearing fsModOnlyCandidate.
*/
if (fs != 0) {
fsModOnlyHotkey = fsModOnlyCandidate;
fsModOnlyCandidate = 0;
}
} else {
fsModifiers |= fs;
/*
* If a modifier key is going down, we have a modifier-only hotkey
* candidate. Save current modifier state until the following break.
*/
if (fs != 0) {
fsModOnlyCandidate = fsModifiers;
}
}
if (vk == VK_DELETE) {
/*
* Special case for SAS (Ctrl+Alt+Del) - examine physical key state!
*
* An evil daemon process can fool convincingly pretend to be winlogon
* by registering Alt+Del as a hotkey, and spinning another thread that
* continually calls keybd_event() to send the Ctrl key up: when the
* user types Ctrl+Alt+Del, only Alt+Del will be seen by the system,
* the evil daemon will get woken by WM_HOTKEY and can pretend to be
* winlogon. So look at gafPhysKeyState in this case, to see what keys
* were physically pressed.
* NOTE: If hotkeys are ever made to work under journal playback, make
* sure they don't affect the gafPhysKeyState! - IanJa.
*/
UINT fPhysMods =
(TestKeyDownBit(gafPhysKeyState, VK_MENU) ? MOD_ALT : 0) |
(TestKeyDownBit(gafPhysKeyState, VK_SHIFT) ? MOD_SHIFT : 0) |
(TestKeyDownBit(gafPhysKeyState, VK_CONTROL) ? MOD_CONTROL : 0);
if ((fPhysMods & (MOD_CONTROL|MOD_ALT)) == MOD_CONTROL|MOD_ALT) {
/*
* Use physical modifiers keys
*/
fsModifiers = fPhysMods;
}
}
#ifdef WINDOWS_NOT_HOT
/*
* track whether any key has been pressed since a Windows key went down
*/
if (vk == VK_LWIN || vk == VK_RWIN) {
if (!fBreak) {
fOnlyWinKey = TRUE;
} else if (fOnlyWinKey) {
fOnlyWinKey = FALSE;
CancelJournalling();
pwnd = GETDESKINFO(PtiCurrent())->spwndShell;
if (pwnd != NULL) {
_PostMessage(pwnd, WM_SYSCOMMAND, SC_TASKLIST, 0);
return TRUE;
}
}
} else {
fOnlyWinKey = FALSE;
}
#endif
/*
* If the key is not a hotkey then we're done but first check if the
* key is an Alt-Escape if so we need to cancel journalling.
*
* NOTE: Support for Alt+Esc to cancel journalling dropped in NT 4.0
*/
if (fsModOnlyHotkey && fBreak) {
/*
* A hotkey involving only VK_SHIFT, VK_CONTROL, VK_MENU or VK_WINDOWS
* must only operate on a key release.
*/
if ((phk = IsHotKey(LOWORD(fsModOnlyHotkey), VK_NONE)) == NULL) {
return FALSE;
}
} else if ((phk = IsHotKey(LOWORD(fsModifiers), vk)) == NULL) {
return FALSE;
}
if (phk->id == IDHOT_WINDOWS) {
pwnd = GETDESKINFO(PtiCurrent())->spwndShell;
if (pwnd != NULL) {
_PostMessage(pwnd, WM_SYSCOMMAND, SC_TASKLIST, 0);
return TRUE;
}
}
if ((phk->id == IDHOT_DEBUG) || (phk->id == IDHOT_DEBUGSERVER)) {
if (!fBreak) {
/*
* The DEBUG key has been pressed. Break the appropriate
* thread into the debugger.
*/
fEatDebugKeyBreak = xxxActivateDebugger(phk->fsModifiers);
}
/*
* This'll eat the debug key down and break if we broke into
* the debugger on the server only on the down.
*/
return fEatDebugKeyBreak;
}
/*
* don't allow hotkeys(except for ones owned by the logon process)
* if the window station is locked.
*/
if (((grpdeskRitInput->rpwinstaParent->dwFlags & WSF_SWITCHLOCK) != 0) &&
(phk->pti->Thread->Cid.UniqueProcess != gpidLogon)) {
return FALSE;
}
if ((fsModOnlyHotkey == 0) && fBreak) {
/*
* Do Modifier-Only hotkeys on break events, else return here.
*/
return FALSE;
}
/*
* Unhook hooks if a control-escape, alt-escape, or control-alt-del
* comes through, so the user can cancel if the system seems hung.
*
* Note the hook may be locked so even if the unhook succeeds it
* won't remove the hook from the global asphkStart array. So
* we have to walk the list manually. This code works because
* we are in the critical section and we know other hooks won't
* be deleted.
*
* Once we've unhooked, post a WM_CANCELJOURNAL message to the app
* that set the hook so it knows we did this.
*
* NOTE: Support for Alt+Esc to cancel journalling dropped in NT 4.0
*/
fCancel = FALSE;
if (vk == VK_ESCAPE && LOWORD(fsModifiers) == MOD_CONTROL) {
fCancel = TRUE;
}
if (vk == VK_DELETE && (fsModifiers & (MOD_CONTROL | MOD_ALT)) ==
(MOD_CONTROL | MOD_ALT)) {
fCancel = TRUE;
}
if (fCancel)
CancelJournalling();
/*
* See if the key is reserved by a console window. If it is,
* return FALSE so the key will be passed to the console.
*/
if (fsReserveKeys != 0) {
switch (vk) {
case VK_TAB:
if ((fsReserveKeys & CONSOLE_ALTTAB) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == MOD_ALT)) {
return FALSE;
}
break;
case VK_ESCAPE:
if ((fsReserveKeys & CONSOLE_ALTESC) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == MOD_ALT)) {
return FALSE;
}
if ((fsReserveKeys & CONSOLE_CTRLESC) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == MOD_CONTROL)) {
return FALSE;
}
break;
case VK_RETURN:
if ((fsReserveKeys & CONSOLE_ALTENTER) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == MOD_ALT)) {
return FALSE;
}
break;
case VK_SNAPSHOT:
if ((fsReserveKeys & CONSOLE_PRTSC) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == 0)) {
return FALSE;
}
if ((fsReserveKeys & CONSOLE_ALTPRTSC) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == MOD_ALT)) {
return FALSE;
}
break;
case VK_SPACE:
if ((fsReserveKeys & CONSOLE_ALTSPACE) &&
((fsModifiers & (MOD_CONTROL | MOD_ALT)) == MOD_ALT)) {
return FALSE;
}
break;
}
}
/*
* If this is the task-list hotkey, go ahead and set foreground
* status to the task-list queue right now. This prevents problems
* where the user hits ctrl-esc and types-ahead before the task-list
* processes the hotkey and brings up the task-list window.
*/
if ((LOWORD(fsModifiers) == MOD_CONTROL) && (vk == VK_ESCAPE) && !fBreak) {
PWND pwndSwitch;
TL tlpwndSwitch;
if (ghwndSwitch != NULL) {
pwndSwitch = PW(ghwndSwitch);
ThreadLock(pwndSwitch, &tlpwndSwitch);
xxxSetForegroundWindow2(pwndSwitch, NULL, 0);
ThreadUnlock(&tlpwndSwitch);
}
}
/*
* Get the hot key contents.
*/
if (phk->spwnd == NULL) {
_PostThreadMessage(
phk->pti, WM_HOTKEY, phk->id,
MAKELONG(LOWORD(fsModifiers), vk));
} else {
if (phk->spwnd == PWND_INPUTOWNER) {
if (gpqForeground != NULL) {
pwnd = gpqForeground->spwndFocus;
} else {
return FALSE;
}
} else {
pwnd = phk->spwnd;
}
if (pwnd) {
if (pwnd == pwnd->head.rpdesk->pDeskInfo->spwndShell && phk->id == SC_TASKLIST) {
_PostMessage(pwnd, WM_SYSCOMMAND, SC_TASKLIST, 0);
} else {
_PostMessage(pwnd, WM_HOTKEY, phk->id, MAKELONG(LOWORD(fsModifiers), vk));
}
}
}
/*
* If this is a Modifier-Only hotkey, let the modifier break through
* by returning FALSE, otherwise we will have modifier keys stuck down.
*/
return (fsModOnlyHotkey == 0);
}
/***************************************************************************\
*
* SetShellWindow()
*
* Returns true if shell window is successfully set. Note that we return
* FALSE if a shell window already exists. I.E., this works on a first
* come, first serve basis.
*
* We also do NOT allow child windows to be shell windows. Other than that,
* it's up to the caller to size her window appropriately.
*
* The pwndBkGnd is provided for the explorer shell. Since the shellwnd
* and the window which does the drawing of background wallpapers are
* different, we need to provide means by which we can draw directly on
* the background window during hung-app drawing. The pwnd and pwndBkGnd
* will be identical if called through the SetShellWindow() api.
*
*
\***************************************************************************/
BOOL xxxSetShellWindow(PWND pwnd, PWND pwndBkGnd)
{
PTHREADINFO ptiCurrent = PtiCurrent();
PDESKTOPINFO pdeskinfo = GETDESKINFO(ptiCurrent);
PPROCESSINFO ppiShellProcess;
UserAssert(pwnd);
/*
* Fail the call if another shell window exists
*/
if (pdeskinfo->spwndShell != NULL)
return(FALSE);
/*
* The shell window must be
* (1) Top-level
* (2) Unowned
* (3) Not topmost
*/
if (TestwndChild(pwnd) ||
(pwnd->spwndOwner != NULL) ||
TestWF(pwnd, WEFTOPMOST)) {
RIPMSG0(RIP_WARNING, "xxxSetShellWindow: Invalid type of window");
return(FALSE);
}
/*
* Chicago has a totally different input model which has special code
* that checks for Ctrl-Esc and sends it to the shell. We can get
* the same functionality, without totally re-writing our input model
* by just automatically installing the Ctrl-Esc as a hotkey for the
* shell window. The hotkey delivery code has a special case which
* turns this into a WM_SYSCOMMAND message instead of a WM_HOTKEY
* message.
*
* We don't both checking for failure. Somebody could already have
* a Ctrl-Esc handler installed.
*/
_RegisterHotKey(pwnd,SC_TASKLIST,MOD_CONTROL,VK_ESCAPE);
/*
* This is the shell window wright.
* So get the process id for the shell.
*/
ppiShellProcess = GETPTI(pwnd)->ppi;
/*
* Set the shell process id to the desktop only if it's the first instance
*/
if ((ppiShellProcess != NULL) && (pdeskinfo->ppiShellProcess == NULL)) {
pdeskinfo->ppiShellProcess = ppiShellProcess;
}
Lock(&pdeskinfo->spwndShell, pwnd);
Lock(&pdeskinfo->spwndBkGnd, pwndBkGnd);
/*
* Push window to bottom of stack.
*/
SetWF(pdeskinfo->spwndShell, WFBOTTOMMOST);
xxxSetWindowPos(pdeskinfo->spwndShell,
PWND_BOTTOM,
0,
0,
0,
0,
SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE);
return(TRUE);
}
