win32ss/user/ntuser/desktop.h

   1 #pragma once
   2
   3 typedef struct _DESKTOP
   4 {
   5     /* Must be the first member */
   6     DWORD dwSessionId;
   7
   8     PDESKTOPINFO pDeskInfo;
   9     LIST_ENTRY ListEntry;
  10     /* Pointer to the associated window station. */
  11     struct _WINSTATION_OBJECT *rpwinstaParent;
  12     DWORD dwDTFlags;
  13     DWORD_PTR dwDesktopId;
  14     PMENU spmenuSys;
  15     PMENU spmenuDialogSys;
  16     PMENU spmenuHScroll;
  17     PMENU spmenuVScroll;
  18     PWND spwndForeground;
  19     PWND spwndTray;
  20     PWND spwndMessage;
  21     PWND spwndTooltip;
  22     PVOID hsectionDesktop;
  23     PWIN32HEAP pheapDesktop;
  24     ULONG_PTR ulHeapSize;
  25     LIST_ENTRY PtiList;
  26     /* Use for tracking mouse moves. */
  27     PWND spwndTrack;
  28     DWORD htEx;
  29     RECT rcMouseHover;
  30     DWORD dwMouseHoverTime;
  31
  32     /* ReactOS */
  33     /* Pointer to the active queue. */
  34     struct _USER_MESSAGE_QUEUE *ActiveMessageQueue;
  35     /* Handle of the desktop window. */
  36     HWND DesktopWindow;
  37     /* Thread blocking input */
  38     PVOID BlockInputThread;
  39     LIST_ENTRY ShellHookWindows;
  40 } DESKTOP;
  41
  42 // Desktop flags
  43 #define DF_TME_HOVER        0x00000400
  44 #define DF_TME_LEAVE        0x00000800
  45 #define DF_HOTTRACK         0x00004000
  46 #define DF_DESTROYED        0x00008000
  47 #define DF_DESKWNDDESTROYED 0x00010000
  48 #define DF_DYING            0x00020000
  49
  50 // Index offset for Desktop data. Should these be global?
  51 #define DT_GWL_PROCESSID 0
  52 #define DT_GWL_THREADID  4
  53
  54 #define DESKTOP_READ       STANDARD_RIGHTS_READ      | \
  55                            DESKTOP_ENUMERATE         | \
  56                            DESKTOP_READOBJECTS
  57
  58 #define DESKTOP_WRITE       STANDARD_RIGHTS_WRITE    | \
  59                             DESKTOP_CREATEMENU       | \
  60                             DESKTOP_CREATEWINDOW     | \
  61                             DESKTOP_HOOKCONTROL      | \
  62                             DESKTOP_JOURNALPLAYBACK  | \
  63                             DESKTOP_JOURNALRECORD    | \
  64                             DESKTOP_WRITEOBJECTS
  65
  66 #define DESKTOP_EXECUTE     STANDARD_RIGHTS_EXECUTE  | \
  67                             DESKTOP_SWITCHDESKTOP
  68
  69 #define DESKTOP_ALL_ACCESS  STANDARD_RIGHTS_REQUIRED | \
  70                             DESKTOP_CREATEMENU       | \
  71                             DESKTOP_CREATEWINDOW     | \
  72                             DESKTOP_ENUMERATE        | \
  73                             DESKTOP_HOOKCONTROL      | \
  74                             DESKTOP_JOURNALPLAYBACK  | \
  75                             DESKTOP_JOURNALRECORD    | \
  76                             DESKTOP_READOBJECTS      | \
  77                             DESKTOP_SWITCHDESKTOP    | \
  78                             DESKTOP_WRITEOBJECTS
  79
  80 extern PDESKTOP gpdeskInputDesktop;
  81 extern PCLS DesktopWindowClass;
  82 extern HDC ScreenDeviceContext;
  83 extern PTHREADINFO gptiForeground;
  84 extern PTHREADINFO gptiDesktopThread;
  85
  86 typedef struct _SHELL_HOOK_WINDOW
  87 {
  88   LIST_ENTRY ListEntry;
  89   HWND hWnd;
  90 } SHELL_HOOK_WINDOW, *PSHELL_HOOK_WINDOW;
  91
  92 INIT_FUNCTION
  93 NTSTATUS
  94 NTAPI
  95 InitDesktopImpl(VOID);
  96
  97 NTSTATUS
  98 APIENTRY
  99 IntDesktopObjectParse(IN PVOID ParseObject,
 100                       IN PVOID ObjectType,
 101                       IN OUT PACCESS_STATE AccessState,
 102                       IN KPROCESSOR_MODE AccessMode,
 103                       IN ULONG Attributes,
 104                       IN OUT PUNICODE_STRING CompleteName,
 105                       IN OUT PUNICODE_STRING RemainingName,
 106                       IN OUT PVOID Context OPTIONAL,
 107                       IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
 108                       OUT PVOID *Object);
 109
 110 NTSTATUS
 111 NTAPI
 112 IntDesktopObjectDelete(
 113     _In_ PVOID Parameters);
 114
 115 NTSTATUS
 116 NTAPI
 117 IntDesktopOkToClose(
 118     _In_ PVOID Parameters);
 119
 120 NTSTATUS
 121 NTAPI
 122 IntDesktopObjectOpen(
 123     _In_ PVOID Parameters);
 124
 125 NTSTATUS
 126 NTAPI
 127 IntDesktopObjectClose(
 128     _In_ PVOID Parameters);
 129
 130 HDC FASTCALL
 131 IntGetScreenDC(VOID);
 132
 133 HWND FASTCALL
 134 IntGetDesktopWindow (VOID);
 135
 136 PWND FASTCALL
 137 UserGetDesktopWindow(VOID);
 138
 139 HWND FASTCALL
 140 IntGetCurrentThreadDesktopWindow(VOID);
 141
 142 PUSER_MESSAGE_QUEUE FASTCALL
 143 IntGetFocusMessageQueue(VOID);
 144
 145 VOID FASTCALL
 146 IntSetFocusMessageQueue(PUSER_MESSAGE_QUEUE NewQueue);
 147
 148 PDESKTOP FASTCALL
 149 IntGetActiveDesktop(VOID);
 150
 151 NTSTATUS FASTCALL
 152 co_IntShowDesktop(PDESKTOP Desktop, ULONG Width, ULONG Height, BOOL Redraw);
 153
 154 NTSTATUS FASTCALL
 155 IntHideDesktop(PDESKTOP Desktop);
 156
 157 BOOL IntSetThreadDesktop(IN HDESK hDesktop,
 158                          IN BOOL FreeOnFailure);
 159
 160 NTSTATUS FASTCALL
 161 IntValidateDesktopHandle(
 162    HDESK Desktop,
 163    KPROCESSOR_MODE AccessMode,
 164    ACCESS_MASK DesiredAccess,
 165    PDESKTOP *Object);
 166
 167 NTSTATUS FASTCALL
 168 IntParseDesktopPath(PEPROCESS Process,
 169                     PUNICODE_STRING DesktopPath,
 170                     HWINSTA *hWinSta,
 171                     HDESK *hDesktop);
 172
 173 VOID APIENTRY UserRedrawDesktop(VOID);
 174 BOOL IntRegisterShellHookWindow(HWND hWnd);
 175 BOOL IntDeRegisterShellHookWindow(HWND hWnd);
 176 VOID co_IntShellHookNotify(WPARAM Message, WPARAM wParam, LPARAM lParam);
 177 HDC FASTCALL UserGetDesktopDC(ULONG,BOOL,BOOL);
 178
 179 #define IntIsActiveDesktop(Desktop) \
 180   ((Desktop)->rpwinstaParent->ActiveDesktop == (Desktop))
 181
 182 HWND FASTCALL IntGetMessageWindow(VOID);
 183 PWND FASTCALL UserGetMessageWindow(VOID);
 184
 185 static __inline PVOID
 186 DesktopHeapAlloc(IN PDESKTOP Desktop,
 187                  IN SIZE_T Bytes)
 188 {
 189     return RtlAllocateHeap(Desktop->pheapDesktop,
 190                            HEAP_NO_SERIALIZE,
 191                            Bytes);
 192 }
 193
 194 static __inline BOOL
 195 DesktopHeapFree(IN PDESKTOP Desktop,
 196                 IN PVOID lpMem)
 197 {
 198     return RtlFreeHeap(Desktop->pheapDesktop,
 199                        HEAP_NO_SERIALIZE,
 200                        lpMem);
 201 }
 202
 203 static __inline PVOID
 204 DesktopHeapReAlloc(IN PDESKTOP Desktop,
 205                    IN PVOID lpMem,
 206                    IN SIZE_T Bytes)
 207 {
 208 #if 0
 209     /* NOTE: ntoskrnl doesn't export RtlReAllocateHeap... */
 210     return RtlReAllocateHeap(Desktop->pheapDesktop,
 211                              HEAP_NO_SERIALIZE,
 212                              lpMem,
 213                              Bytes);
 214 #else
 215     SIZE_T PrevSize;
 216     PVOID pNew;
 217
 218     PrevSize = RtlSizeHeap(Desktop->pheapDesktop,
 219                            HEAP_NO_SERIALIZE,
 220                            lpMem);
 221
 222     if (PrevSize == Bytes)
 223         return lpMem;
 224
 225     pNew = RtlAllocateHeap(Desktop->pheapDesktop,
 226                            HEAP_NO_SERIALIZE,
 227                            Bytes);
 228     if (pNew != NULL)
 229     {
 230         if (PrevSize < Bytes)
 231             Bytes = PrevSize;
 232
 233         RtlCopyMemory(pNew,
 234                       lpMem,
 235                       Bytes);
 236
 237         RtlFreeHeap(Desktop->pheapDesktop,
 238                     HEAP_NO_SERIALIZE,
 239                     lpMem);
 240     }
 241
 242     return pNew;
 243 #endif
 244 }
 245
 246 static __inline ULONG_PTR
 247 DesktopHeapGetUserDelta(VOID)
 248 {
 249     PW32HEAP_USER_MAPPING Mapping;
 250     PTHREADINFO pti;
 251     PPROCESSINFO W32Process;
 252     PWIN32HEAP pheapDesktop;
 253     ULONG_PTR Delta = 0;
 254
 255     pti = PsGetCurrentThreadWin32Thread();
 256     if (!pti->rpdesk)
 257         return 0;
 258
 259     pheapDesktop = pti->rpdesk->pheapDesktop;
 260
 261     W32Process = PsGetCurrentProcessWin32Process();
 262     Mapping = W32Process->HeapMappings.Next;
 263     while (Mapping != NULL)
 264     {
 265         if (Mapping->KernelMapping == (PVOID)pheapDesktop)
 266         {
 267             Delta = (ULONG_PTR)Mapping->KernelMapping - (ULONG_PTR)Mapping->UserMapping;
 268             break;
 269         }
 270
 271         Mapping = Mapping->Next;
 272     }
 273
 274     return Delta;
 275 }
 276
 277 static __inline PVOID
 278 DesktopHeapAddressToUser(PVOID lpMem)
 279 {
 280     PW32HEAP_USER_MAPPING Mapping;
 281     PPROCESSINFO W32Process;
 282
 283     W32Process = PsGetCurrentProcessWin32Process();
 284     Mapping = W32Process->HeapMappings.Next;
 285     while (Mapping != NULL)
 286     {
 287         if ((ULONG_PTR)lpMem >= (ULONG_PTR)Mapping->KernelMapping &&
 288             (ULONG_PTR)lpMem < (ULONG_PTR)Mapping->KernelMapping + Mapping->Limit)
 289         {
 290             return (PVOID)(((ULONG_PTR)lpMem - (ULONG_PTR)Mapping->KernelMapping) +
 291                            (ULONG_PTR)Mapping->UserMapping);
 292         }
 293
 294         Mapping = Mapping->Next;
 295     }
 296
 297     return NULL;
 298 }
 299
 300 PWND FASTCALL IntGetThreadDesktopWindow(PTHREADINFO);
 301 PWND FASTCALL co_GetDesktopWindow(PWND);
 302 BOOL FASTCALL IntPaintDesktop(HDC);
 303 BOOL FASTCALL DesktopWindowProc(PWND, UINT, WPARAM, LPARAM, LRESULT *);
 304 BOOL FASTCALL UserMessageWindowProc(PWND pwnd, UINT Msg, WPARAM wParam, LPARAM lParam, LRESULT *lResult);
 305 VOID NTAPI DesktopThreadMain();
 306 /* EOF */