mirror of
https://github.com/reactos/reactos.git
synced 2024-07-20 19:36:38 +00:00
385 lines
10 KiB
C
385 lines
10 KiB
C
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* PURPOSE: Window event handlers
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* FILE: subsystem/win32/win32k/ntuser/event.c
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* PROGRAMER: James Tabor (james.tabor@rectos.org)
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*/
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#include <w32k.h>
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#define NDEBUG
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#include <debug.h>
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typedef struct _EVENTPACK
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{
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PEVENTHOOK pEH;
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LONG idObject;
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LONG idChild;
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} EVENTPACK, *PEVENTPACK;
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static PEVENTTABLE GlobalEvents = NULL;
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/* PRIVATE FUNCTIONS *********************************************************/
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static
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DWORD
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FASTCALL
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GetMaskFromEvent(DWORD Event)
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{
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DWORD Ret = 0;
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if ( Event > EVENT_OBJECT_STATECHANGE )
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{
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if ( Event == EVENT_OBJECT_LOCATIONCHANGE ) return SRV_EVENT_LOCATIONCHANGE;
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if ( Event == EVENT_OBJECT_NAMECHANGE ) return SRV_EVENT_NAMECHANGE;
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if ( Event == EVENT_OBJECT_VALUECHANGE ) return SRV_EVENT_VALUECHANGE;
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return SRV_EVENT_CREATE;
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}
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if ( Event == EVENT_OBJECT_STATECHANGE ) return SRV_EVENT_STATECHANGE;
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Ret = SRV_EVENT_RUNNING;
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if ( Event < EVENT_SYSTEM_MENUSTART ) return SRV_EVENT_CREATE;
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if ( Event <= EVENT_SYSTEM_MENUPOPUPEND )
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{
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Ret = SRV_EVENT_MENU;
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}
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else
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{
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if ( Event <= EVENT_CONSOLE_CARET-1 ) return SRV_EVENT_CREATE;
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if ( Event <= EVENT_CONSOLE_END_APPLICATION ) return SRV_EVENT_END_APPLICATION;
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if ( Event != EVENT_OBJECT_FOCUS ) return SRV_EVENT_CREATE;
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}
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return Ret;
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}
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static
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VOID
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FASTCALL
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IntSetSrvEventMask( UINT EventMin, UINT EventMax)
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{
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UINT event;
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DPRINT("SetSrvEventMask 1\n");
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for ( event = EventMin; event <= EventMax; event++)
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{
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if ((event >= EVENT_SYSTEM_SOUND && event <= EVENT_SYSTEM_MINIMIZEEND) ||
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(event >= EVENT_CONSOLE_CARET && event <= EVENT_CONSOLE_END_APPLICATION) ||
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(event >= EVENT_OBJECT_CREATE && event <= EVENT_OBJECT_ACCELERATORCHANGE))
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{
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gpsi->dwInstalledEventHooks |= GetMaskFromEvent(event);
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}
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if (event > EVENT_SYSTEM_MINIMIZEEND && event < EVENT_CONSOLE_CARET)
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{
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event = EVENT_CONSOLE_CARET-1;
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gpsi->dwInstalledEventHooks |= GetMaskFromEvent(event);
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}
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if (event > EVENT_CONSOLE_END_APPLICATION && event < EVENT_OBJECT_CREATE )
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{
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event = EVENT_OBJECT_CREATE-1;
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gpsi->dwInstalledEventHooks |= GetMaskFromEvent(event);
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}
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if (event > EVENT_OBJECT_ACCELERATORCHANGE && event < EVENT_MAX)
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{
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event = EVENT_MAX-1;
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gpsi->dwInstalledEventHooks |= GetMaskFromEvent(event);
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break;
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}
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}
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if (!gpsi->dwInstalledEventHooks)
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gpsi->dwInstalledEventHooks |= SRV_EVENT_RUNNING; // Set something.
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DPRINT("SetSrvEventMask 2 : %x\n", gpsi->dwInstalledEventHooks);
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}
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static
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LRESULT
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FASTCALL
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IntCallLowLevelEvent( PEVENTHOOK pEH,
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DWORD event,
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HWND hwnd,
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LONG idObject,
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LONG idChild)
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{
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NTSTATUS Status;
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ULONG_PTR uResult;
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EVENTPACK EP;
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EP.pEH = pEH;
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EP.idObject = idObject;
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EP.idChild = idChild;
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/* FIXME should get timeout from
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* HKEY_CURRENT_USER\Control Panel\Desktop\LowLevelHooksTimeout */
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Status = co_MsqSendMessage( pEH->head.pti->MessageQueue,
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hwnd,
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event,
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0,
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(LPARAM)&EP,
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5000,
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TRUE,
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MSQ_ISEVENT,
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&uResult);
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return NT_SUCCESS(Status) ? uResult : 0;
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}
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static
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BOOL
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FASTCALL
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IntRemoveEvent(PEVENTHOOK pEH)
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{
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if (pEH)
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{
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DPRINT("IntRemoveEvent pEH 0x%x\n",pEH);
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KeEnterCriticalRegion();
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RemoveEntryList(&pEH->Chain);
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GlobalEvents->Counts--;
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if (!GlobalEvents->Counts) gpsi->dwInstalledEventHooks = 0;
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UserDeleteObject(UserHMGetHandle(pEH), otEvent);
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KeLeaveCriticalRegion();
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return TRUE;
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}
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return FALSE;
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}
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/* FUNCTIONS *****************************************************************/
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LRESULT
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FASTCALL
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co_EVENT_CallEvents( DWORD event,
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HWND hwnd,
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UINT_PTR idObject,
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LONG_PTR idChild)
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{
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PEVENTHOOK pEH;
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LRESULT Result;
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PEVENTPACK pEP = (PEVENTPACK)idChild;
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pEH = pEP->pEH;
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Result = co_IntCallEventProc( UserHMGetHandle(pEH),
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event,
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hwnd,
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pEP->idObject,
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pEP->idChild,
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(DWORD_PTR)(NtCurrentTeb()->ClientId).UniqueThread,
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(DWORD)EngGetTickCount(),
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pEH->Proc);
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return Result;
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}
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VOID
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FASTCALL
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IntNotifyWinEvent(
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DWORD Event,
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PWND pWnd,
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LONG idObject,
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LONG idChild)
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{
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PEVENTHOOK pEH;
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PLIST_ENTRY pLE;
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LRESULT Result;
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DPRINT("IntNotifyWinEvent GlobalEvents = 0x%x pWnd 0x%x\n",GlobalEvents, pWnd);
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if (!pWnd) return;
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if (pWnd && pWnd->state & WNDS_DESTROYED) return;
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if (!GlobalEvents || !GlobalEvents->Counts) return;
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pLE = GlobalEvents->Events.Flink;
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pEH = CONTAINING_RECORD(pLE, EVENTHOOK, Chain);
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do
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{
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UserReferenceObject(pEH);
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// Must be inside the event window.
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if ( (pEH->eventMin <= Event) && (pEH->eventMax >= Event))
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{
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if (pEH->head.pti->pEThread != PsGetCurrentThread())
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{ // if all process || all thread || other thread same process
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if (!(pEH->idProcess) || !(pEH->idThread) ||
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(NtCurrentTeb()->ClientId.UniqueProcess == (PVOID)(DWORD_PTR)pEH->idProcess))
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{
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Result = IntCallLowLevelEvent( pEH,
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Event,
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UserHMGetHandle(pWnd),
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idObject,
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idChild);
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}
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}// if ^skip own thread && ((Pid && CPid == Pid && ^skip own process) || all process)
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else if ( !(pEH->Flags & WINEVENT_SKIPOWNTHREAD) &&
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( ((pEH->idProcess &&
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NtCurrentTeb()->ClientId.UniqueProcess == (PVOID)(DWORD_PTR)pEH->idProcess) &&
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!(pEH->Flags & WINEVENT_SKIPOWNPROCESS)) ||
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!pEH->idProcess ) )
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{
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Result = co_IntCallEventProc( UserHMGetHandle(pEH),
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Event,
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UserHMGetHandle(pWnd),
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idObject,
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idChild,
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PtrToUint(NtCurrentTeb()->ClientId.UniqueThread),
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(DWORD)EngGetTickCount(),
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pEH->Proc);
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}
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}
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UserDereferenceObject(pEH);
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pLE = pEH->Chain.Flink;
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pEH = CONTAINING_RECORD(pLE, EVENTHOOK, Chain);
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} while (pLE != &GlobalEvents->Events);
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}
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VOID
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APIENTRY
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NtUserNotifyWinEvent(
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DWORD Event,
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HWND hWnd,
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LONG idObject,
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LONG idChild)
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{
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PWINDOW_OBJECT Window = NULL;
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USER_REFERENCE_ENTRY Ref;
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UserEnterExclusive();
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/* Validate input */
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if (hWnd && (hWnd != INVALID_HANDLE_VALUE) && !(Window = UserGetWindowObject(hWnd)))
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{
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UserLeave();
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return;
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}
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if (gpsi->dwInstalledEventHooks & GetMaskFromEvent(Event))
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{
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UserRefObjectCo(Window, &Ref);
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IntNotifyWinEvent( Event, Window->Wnd, idObject, idChild);
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UserDerefObjectCo(Window);
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}
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UserLeave();
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}
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HWINEVENTHOOK
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APIENTRY
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NtUserSetWinEventHook(
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UINT eventMin,
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UINT eventMax,
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HMODULE hmodWinEventProc,
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PUNICODE_STRING puString,
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WINEVENTPROC lpfnWinEventProc,
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DWORD idProcess,
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DWORD idThread,
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UINT dwflags)
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{
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PEVENTHOOK pEH;
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HWINEVENTHOOK Ret = NULL;
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NTSTATUS Status;
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HANDLE Handle;
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PETHREAD Thread = NULL;
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DPRINT("NtUserSetWinEventHook hmod 0x%x, pfn 0x%x\n",hmodWinEventProc, lpfnWinEventProc);
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UserEnterExclusive();
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if ( !GlobalEvents )
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{
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GlobalEvents = ExAllocatePoolWithTag(PagedPool, sizeof(EVENTTABLE), TAG_HOOK);
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if (GlobalEvents == NULL)
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{
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SetLastWin32Error(ERROR_NOT_ENOUGH_MEMORY);
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goto SetEventExit;
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}
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GlobalEvents->Counts = 0;
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InitializeListHead(&GlobalEvents->Events);
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}
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if (eventMin > eventMax)
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{
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SetLastWin32Error(ERROR_INVALID_HOOK_FILTER);
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goto SetEventExit;
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}
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if (!lpfnWinEventProc)
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{
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SetLastWin32Error(ERROR_INVALID_FILTER_PROC);
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goto SetEventExit;
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}
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if ((dwflags & WINEVENT_INCONTEXT) && !hmodWinEventProc)
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{
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SetLastWin32Error(ERROR_HOOK_NEEDS_HMOD);
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goto SetEventExit;
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}
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if (idThread)
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{
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Status = PsLookupThreadByThreadId((HANDLE)(DWORD_PTR)idThread, &Thread);
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if (!NT_SUCCESS(Status))
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{
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SetLastWin32Error(ERROR_INVALID_THREAD_ID);
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goto SetEventExit;
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}
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}
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pEH = UserCreateObject(gHandleTable, NULL, &Handle, otEvent, sizeof(EVENTHOOK));
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if (pEH)
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{
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InsertTailList(&GlobalEvents->Events, &pEH->Chain);
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GlobalEvents->Counts++;
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UserHMGetHandle(pEH) = Handle;
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if (Thread)
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pEH->head.pti = Thread->Tcb.Win32Thread;
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else
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pEH->head.pti = GetW32ThreadInfo();
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pEH->eventMin = eventMin;
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pEH->eventMax = eventMax;
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pEH->idProcess = idProcess;
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pEH->idThread = idThread;
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pEH->Flags = dwflags;
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if (NULL != hmodWinEventProc)
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{
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pEH->offPfn = (ULONG_PTR)((char *)lpfnWinEventProc - (char *)hmodWinEventProc);
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pEH->ihmod = (INT)hmodWinEventProc;
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pEH->Proc = lpfnWinEventProc;
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}
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else
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pEH->Proc = lpfnWinEventProc;
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UserDereferenceObject(pEH);
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Ret = Handle;
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IntSetSrvEventMask( eventMin, eventMax);
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}
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SetEventExit:
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if (Thread) ObDereferenceObject(Thread);
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UserLeave();
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return Ret;
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}
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BOOL
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APIENTRY
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NtUserUnhookWinEvent(
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HWINEVENTHOOK hWinEventHook)
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{
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PEVENTHOOK pEH;
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BOOL Ret = FALSE;
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UserEnterExclusive();
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pEH = (PEVENTHOOK)UserGetObject(gHandleTable, hWinEventHook, otEvent);
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if (pEH)
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{
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Ret = IntRemoveEvent(pEH);
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}
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UserLeave();
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return Ret;
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}
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/* EOF */
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