win32ss/user/ntuser/desktop.h

   1 #pragma once
   2
   3 typedef struct _DESKTOP
   4 {
   5     PDESKTOPINFO pDeskInfo;
   6     LIST_ENTRY ListEntry;
   7     /* Pointer to the associated window station. */
   8     struct _WINSTATION_OBJECT *rpwinstaParent;
   9     DWORD dwDTFlags;
  10     PWND spwndForeground;
  11     PWND spwndTray;
  12     PWND spwndMessage;
  13     PWND spwndTooltip;
  14     PSECTION_OBJECT hsectionDesktop;
  15     PWIN32HEAP pheapDesktop;
  16     ULONG_PTR ulHeapSize;
  17     LIST_ENTRY PtiList;
  18     /* Use for tracking mouse moves. */
  19     PWND spwndTrack;
  20     DWORD htEx;
  21     RECT rcMouseHover;
  22     DWORD dwMouseHoverTime;
  23
  24     /* ReactOS */
  25     /* Pointer to the active queue. */
  26     struct _USER_MESSAGE_QUEUE *ActiveMessageQueue;
  27     /* Handle of the desktop window. */
  28     HWND DesktopWindow;
  29     /* Thread blocking input */
  30     PVOID BlockInputThread;
  31     LIST_ENTRY ShellHookWindows;
  32 } DESKTOP;
  33
  34 // Desktop flags
  35 #define DF_TME_HOVER        0x00000400
  36 #define DF_TME_LEAVE        0x00000800
  37 #define DF_HOTTRACK         0x00004000
  38 #define DF_DESTROYED        0x00008000
  39 #define DF_DESKWNDDESTROYED 0x00010000
  40 #define DF_DYING            0x00020000
  41
  42 // Index offset for Desktop data. Should these be global?
  43 #define DT_GWL_PROCESSID 0
  44 #define DT_GWL_THREADID  4
  45
  46 #define DESKTOP_READ       STANDARD_RIGHTS_READ      | \
  47                            DESKTOP_ENUMERATE         | \
  48                            DESKTOP_READOBJECTS
  49
  50 #define DESKTOP_WRITE       STANDARD_RIGHTS_WRITE    | \
  51                             DESKTOP_CREATEMENU       | \
  52                             DESKTOP_CREATEWINDOW     | \
  53                             DESKTOP_HOOKCONTROL      | \
  54                             DESKTOP_JOURNALPLAYBACK  | \
  55                             DESKTOP_JOURNALRECORD    | \
  56                             DESKTOP_WRITEOBJECTS
  57
  58 #define DESKTOP_EXECUTE     STANDARD_RIGHTS_EXECUTE  | \
  59                             DESKTOP_SWITCHDESKTOP
  60
  61 #define DESKTOP_ALL_ACCESS  STANDARD_RIGHTS_REQUIRED | \
  62                             DESKTOP_CREATEMENU       | \
  63                             DESKTOP_CREATEWINDOW     | \
  64                             DESKTOP_ENUMERATE        | \
  65                             DESKTOP_HOOKCONTROL      | \
  66                             DESKTOP_JOURNALPLAYBACK  | \
  67                             DESKTOP_JOURNALRECORD    | \
  68                             DESKTOP_READOBJECTS      | \
  69                             DESKTOP_SWITCHDESKTOP    | \
  70                             DESKTOP_WRITEOBJECTS
  71
  72 extern PDESKTOP InputDesktop;
  73 extern PCLS DesktopWindowClass;
  74 extern HDC ScreenDeviceContext;
  75 extern PTHREADINFO gptiDesktopThread;
  76
  77 typedef struct _SHELL_HOOK_WINDOW
  78 {
  79   LIST_ENTRY ListEntry;
  80   HWND hWnd;
  81 } SHELL_HOOK_WINDOW, *PSHELL_HOOK_WINDOW;
  82
  83 INIT_FUNCTION
  84 NTSTATUS
  85 NTAPI
  86 InitDesktopImpl(VOID);
  87
  88 NTSTATUS
  89 APIENTRY
  90 IntDesktopObjectParse(IN PVOID ParseObject,
  91                       IN PVOID ObjectType,
  92                       IN OUT PACCESS_STATE AccessState,
  93                       IN KPROCESSOR_MODE AccessMode,
  94                       IN ULONG Attributes,
  95                       IN OUT PUNICODE_STRING CompleteName,
  96                       IN OUT PUNICODE_STRING RemainingName,
  97                       IN OUT PVOID Context OPTIONAL,
  98                       IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
  99                       OUT PVOID *Object);
 100
 101 VOID APIENTRY
 102 IntDesktopObjectDelete(PWIN32_DELETEMETHOD_PARAMETERS Parameters);
 103
 104 NTSTATUS NTAPI
 105 IntDesktopOkToClose(PWIN32_OKAYTOCLOSEMETHOD_PARAMETERS Parameters);
 106
 107 NTSTATUS NTAPI
 108 IntDesktopObjectOpen(PWIN32_OPENMETHOD_PARAMETERS Parameters);
 109
 110 NTSTATUS NTAPI
 111 IntDesktopObjectClose(PWIN32_CLOSEMETHOD_PARAMETERS Parameters);
 112
 113 HDC FASTCALL
 114 IntGetScreenDC(VOID);
 115
 116 HWND FASTCALL
 117 IntGetDesktopWindow (VOID);
 118
 119 PWND FASTCALL
 120 UserGetDesktopWindow(VOID);
 121
 122 HWND FASTCALL
 123 IntGetCurrentThreadDesktopWindow(VOID);
 124
 125 PUSER_MESSAGE_QUEUE FASTCALL
 126 IntGetFocusMessageQueue(VOID);
 127
 128 VOID FASTCALL
 129 IntSetFocusMessageQueue(PUSER_MESSAGE_QUEUE NewQueue);
 130
 131 PDESKTOP FASTCALL
 132 IntGetActiveDesktop(VOID);
 133
 134 NTSTATUS FASTCALL
 135 co_IntShowDesktop(PDESKTOP Desktop, ULONG Width, ULONG Height, BOOL Redraw);
 136
 137 NTSTATUS FASTCALL
 138 IntHideDesktop(PDESKTOP Desktop);
 139
 140 BOOL IntSetThreadDesktop(IN HDESK hDesktop,
 141                          IN BOOL FreeOnFailure);
 142
 143 NTSTATUS FASTCALL
 144 IntValidateDesktopHandle(
 145    HDESK Desktop,
 146    KPROCESSOR_MODE AccessMode,
 147    ACCESS_MASK DesiredAccess,
 148    PDESKTOP *Object);
 149
 150 NTSTATUS FASTCALL
 151 IntParseDesktopPath(PEPROCESS Process,
 152                     PUNICODE_STRING DesktopPath,
 153                     HWINSTA *hWinSta,
 154                     HDESK *hDesktop);
 155
 156 VOID APIENTRY UserRedrawDesktop(VOID);
 157 BOOL IntRegisterShellHookWindow(HWND hWnd);
 158 BOOL IntDeRegisterShellHookWindow(HWND hWnd);
 159 VOID co_IntShellHookNotify(WPARAM Message, WPARAM wParam, LPARAM lParam);
 160 HDC FASTCALL UserGetDesktopDC(ULONG,BOOL,BOOL);
 161
 162 #define IntIsActiveDesktop(Desktop) \
 163   ((Desktop)->rpwinstaParent->ActiveDesktop == (Desktop))
 164
 165 #define GET_DESKTOP_NAME(d)                                             \
 166     OBJECT_HEADER_TO_NAME_INFO(OBJECT_TO_OBJECT_HEADER(d)) ?            \
 167     &(OBJECT_HEADER_TO_NAME_INFO(OBJECT_TO_OBJECT_HEADER(d))->Name) :   \
 168     NULL
 169
 170 HWND FASTCALL IntGetMessageWindow(VOID);
 171 PWND FASTCALL UserGetMessageWindow(VOID);
 172
 173 static __inline PVOID
 174 DesktopHeapAlloc(IN PDESKTOP Desktop,
 175                  IN SIZE_T Bytes)
 176 {
 177     return RtlAllocateHeap(Desktop->pheapDesktop,
 178                            HEAP_NO_SERIALIZE,
 179                            Bytes);
 180 }
 181
 182 static __inline BOOL
 183 DesktopHeapFree(IN PDESKTOP Desktop,
 184                 IN PVOID lpMem)
 185 {
 186     return RtlFreeHeap(Desktop->pheapDesktop,
 187                        HEAP_NO_SERIALIZE,
 188                        lpMem);
 189 }
 190
 191 static __inline PVOID
 192 DesktopHeapReAlloc(IN PDESKTOP Desktop,
 193                    IN PVOID lpMem,
 194                    IN SIZE_T Bytes)
 195 {
 196 #if 0
 197     /* NOTE: ntoskrnl doesn't export RtlReAllocateHeap... */
 198     return RtlReAllocateHeap(Desktop->pheapDesktop,
 199                              HEAP_NO_SERIALIZE,
 200                              lpMem,
 201                              Bytes);
 202 #else
 203     SIZE_T PrevSize;
 204     PVOID pNew;
 205
 206     PrevSize = RtlSizeHeap(Desktop->pheapDesktop,
 207                            HEAP_NO_SERIALIZE,
 208                            lpMem);
 209
 210     if (PrevSize == Bytes)
 211         return lpMem;
 212
 213     pNew = RtlAllocateHeap(Desktop->pheapDesktop,
 214                            HEAP_NO_SERIALIZE,
 215                            Bytes);
 216     if (pNew != NULL)
 217     {
 218         if (PrevSize < Bytes)
 219             Bytes = PrevSize;
 220
 221         RtlCopyMemory(pNew,
 222                       lpMem,
 223                       Bytes);
 224
 225         RtlFreeHeap(Desktop->pheapDesktop,
 226                     HEAP_NO_SERIALIZE,
 227                     lpMem);
 228     }
 229
 230     return pNew;
 231 #endif
 232 }
 233
 234 static __inline ULONG_PTR
 235 DesktopHeapGetUserDelta(VOID)
 236 {
 237     PW32HEAP_USER_MAPPING Mapping;
 238     PTHREADINFO pti;
 239     PPROCESSINFO W32Process;
 240     PWIN32HEAP pheapDesktop;
 241     ULONG_PTR Delta = 0;
 242
 243     pti = PsGetCurrentThreadWin32Thread();
 244     if (!pti->rpdesk)
 245         return 0;
 246
 247     pheapDesktop = pti->rpdesk->pheapDesktop;
 248
 249     W32Process = PsGetCurrentProcessWin32Process();
 250     Mapping = W32Process->HeapMappings.Next;
 251     while (Mapping != NULL)
 252     {
 253         if (Mapping->KernelMapping == (PVOID)pheapDesktop)
 254         {
 255             Delta = (ULONG_PTR)Mapping->KernelMapping - (ULONG_PTR)Mapping->UserMapping;
 256             break;
 257         }
 258
 259         Mapping = Mapping->Next;
 260     }
 261
 262     return Delta;
 263 }
 264
 265 static __inline PVOID
 266 DesktopHeapAddressToUser(PVOID lpMem)
 267 {
 268     PW32HEAP_USER_MAPPING Mapping;
 269     PPROCESSINFO W32Process;
 270
 271     W32Process = PsGetCurrentProcessWin32Process();
 272     Mapping = W32Process->HeapMappings.Next;
 273     while (Mapping != NULL)
 274     {
 275         if ((ULONG_PTR)lpMem >= (ULONG_PTR)Mapping->KernelMapping &&
 276             (ULONG_PTR)lpMem < (ULONG_PTR)Mapping->KernelMapping + Mapping->Limit)
 277         {
 278             return (PVOID)(((ULONG_PTR)lpMem - (ULONG_PTR)Mapping->KernelMapping) +
 279                            (ULONG_PTR)Mapping->UserMapping);
 280         }
 281
 282         Mapping = Mapping->Next;
 283     }
 284
 285     return NULL;
 286 }
 287
 288 PWND FASTCALL IntGetThreadDesktopWindow(PTHREADINFO);
 289 PWND FASTCALL co_GetDesktopWindow(PWND);
 290 BOOL FASTCALL IntPaintDesktop(HDC);
 291 BOOL FASTCALL DesktopWindowProc(PWND, UINT, WPARAM, LPARAM, LRESULT *);
 292 BOOL FASTCALL UserMessageWindowProc(PWND pwnd, UINT Msg, WPARAM wParam, LPARAM lParam, LRESULT *lResult);
 293 VOID NTAPI DesktopThreadMain();
 294 /* EOF */