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NtUser-/W32kGetWindowThreadProcessId impl.

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svn path=/trunk/; revision=5264
This commit is contained in:
Gunnar Dalsnes 2003-07-25 19:36:26 +00:00
parent 1e85120647
commit a857d3b160
4 changed files with 44 additions and 1 deletions
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1
reactos/iface/addsys/w32ksvc.db
View file

@ -545,3 +545,4 @@ NtUserYieldTask 0
NtUserGetDesktopWindow 0
# ReactOS only system calls
NtUserAcquireOrReleaseInputOwnership 1
NtUserGetWindowThreadProcessId 2

3
reactos/include/win32k/ntuser.h
View file

@ -1741,6 +1741,9 @@ DWORD
STDCALL
NtUserYieldTask(VOID);
DWORD STDCALL
NtUserGetWindowThreadProcessId(HWND hWnd, LPDWORD UnsafePid);
#endif /* __WIN32K_NTUSER_H */
/* EOF */

5
reactos/subsys/win32k/include/window.h
View file

@ -83,6 +83,7 @@ typedef struct _WINDOW_OBJECT
PSCROLLBARINFO wExtra;
LONG UserData;
WNDPROC WndProc;
PETHREAD OwnerThread;
} WINDOW_OBJECT, *PWINDOW_OBJECT;
/* Window flags. */
@ -108,6 +109,10 @@ BOOL FASTCALL W32kIsChildWindow (HWND Parent, HWND Child);
HWND FASTCALL W32kGetDesktopWindow (VOID);
HWND FASTCALL W32kGetFocusWindow (VOID);
HWND FASTCALL W32kSetFocusWindow (HWND hWnd);
DWORD FASTCALL
W32kGetWindowThreadProcessId(PWINDOW_OBJECT Wnd, PDWORD pid);
#endif /* __WIN32K_WINDOW_H */
/* EOF */

36
reactos/subsys/win32k/ntuser/window.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id: window.c,v 1.66 2003/07/24 15:59:34 rcampbell Exp $
/* $Id: window.c,v 1.67 2003/07/25 19:35:51 gdalsnes Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -490,6 +490,7 @@ W32kCreateDesktopWindow(PWINSTATION_OBJECT WindowStation,
WindowObject->ClientRect = WindowObject->WindowRect;
WindowObject->UserData = 0;
WindowObject->WndProc = DesktopClass->Class.lpfnWndProc;
WindowObject->OwnerThread = PsGetCurrentThread();
InitializeListHead(&WindowObject->ChildrenListHead);
ExInitializeFastMutex(&WindowObject->ChildrenListLock);
@ -631,6 +632,7 @@ NtUserCreateWindowEx(DWORD dwExStyle,
WindowObject->Parent = ParentWindow;
WindowObject->UserData = 0;
WindowObject->WndProc = ClassObject->Class.lpfnWndProc;
WindowObject->OwnerThread = PsGetCurrentThread();
ExAcquireFastMutexUnsafe(&ParentWindow->ChildrenListLock);
InsertHeadList(&ParentWindow->ChildrenListHead,
@ -1964,4 +1966,36 @@ NtUserGetDesktopWindow()
return W32kGetDesktopWindow();
}
DWORD FASTCALL
W32kGetWindowThreadProcessId(PWINDOW_OBJECT Wnd, PDWORD pid)
{
if (pid) *pid = (DWORD) Wnd->OwnerThread->Cid.UniqueThread;
return (DWORD) Wnd->OwnerThread->ThreadsProcess->UniqueProcessId;
}
DWORD STDCALL
NtUserGetWindowThreadProcessId(HWND hWnd, LPDWORD UnsafePid)
{
PWINDOW_OBJECT Wnd;
DWORD tid, pid;
//W32kAcquireWindowsLockShared();
if (!(Wnd = W32kGetWindowObject(hWnd)))
{
SetLastWin32Error(ERROR_INVALID_WINDOW_HANDLE);
return 0;
}
tid = W32kGetWindowThreadProcessId(Wnd, &pid);
W32kReleaseWindowObject(Wnd);
//W32kReleaseWindowsLock();
if (UnsafePid) MmCopyToCaller(UnsafePid, &pid, sizeof(DWORD));
return tid;
}
/* EOF */