reactos/subsystems/win32/win32k/include/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     PVOID 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 #define DESKTOP_READ       STANDARD_RIGHTS_READ      | \
  43                            DESKTOP_ENUMERATE         | \
  44                            DESKTOP_READOBJECTS
  45
  46 #define DESKTOP_WRITE       STANDARD_RIGHTS_WRITE    | \
  47                             DESKTOP_CREATEMENU       | \
  48                             DESKTOP_CREATEWINDOW     | \
  49                             DESKTOP_HOOKCONTROL      | \
  50                             DESKTOP_JOURNALPLAYBACK  | \
  51                             DESKTOP_JOURNALRECORD    | \
  52                             DESKTOP_WRITEOBJECTS
  53
  54 #define DESKTOP_EXECUTE     STANDARD_RIGHTS_EXECUTE  | \
  55                             DESKTOP_SWITCHDESKTOP
  56
  57 #define DESKTOP_ALL_ACCESS  STANDARD_RIGHTS_REQUIRED | \
  58                             DESKTOP_CREATEMENU       | \
  59                             DESKTOP_CREATEWINDOW     | \
  60                             DESKTOP_ENUMERATE        | \
  61                             DESKTOP_HOOKCONTROL      | \
  62                             DESKTOP_JOURNALPLAYBACK  | \
  63                             DESKTOP_JOURNALRECORD    | \
  64                             DESKTOP_READOBJECTS      | \
  65                             DESKTOP_SWITCHDESKTOP    | \
  66                             DESKTOP_WRITEOBJECTS
  67
  68 extern PDESKTOP InputDesktop;
  69 extern HDESK InputDesktopHandle;
  70 extern PCLS DesktopWindowClass;
  71 extern HDC ScreenDeviceContext;
  72
  73 typedef struct _SHELL_HOOK_WINDOW
  74 {
  75   LIST_ENTRY ListEntry;
  76   HWND hWnd;
  77 } SHELL_HOOK_WINDOW, *PSHELL_HOOK_WINDOW;
  78
  79 INIT_FUNCTION
  80 NTSTATUS
  81 NTAPI
  82 InitDesktopImpl(VOID);
  83
  84 NTSTATUS
  85 APIENTRY
  86 IntDesktopObjectParse(IN PVOID ParseObject,
  87                       IN PVOID ObjectType,
  88                       IN OUT PACCESS_STATE AccessState,
  89                       IN KPROCESSOR_MODE AccessMode,
  90                       IN ULONG Attributes,
  91                       IN OUT PUNICODE_STRING CompleteName,
  92                       IN OUT PUNICODE_STRING RemainingName,
  93                       IN OUT PVOID Context OPTIONAL,
  94                       IN PSECURITY_QUALITY_OF_SERVICE SecurityQos OPTIONAL,
  95                       OUT PVOID *Object);
  96
  97 VOID APIENTRY
  98 IntDesktopObjectDelete(PWIN32_DELETEMETHOD_PARAMETERS Parameters);
  99
 100 NTSTATUS NTAPI
 101 IntDesktopOkToClose(PWIN32_OKAYTOCLOSEMETHOD_PARAMETERS Parameters);
 102
 103 HDC FASTCALL
 104 IntGetScreenDC(VOID);
 105
 106 HWND FASTCALL
 107 IntGetDesktopWindow (VOID);
 108
 109 PWND FASTCALL
 110 UserGetDesktopWindow(VOID);
 111
 112 HWND FASTCALL
 113 IntGetCurrentThreadDesktopWindow(VOID);
 114
 115 PUSER_MESSAGE_QUEUE FASTCALL
 116 IntGetFocusMessageQueue(VOID);
 117
 118 VOID FASTCALL
 119 IntSetFocusMessageQueue(PUSER_MESSAGE_QUEUE NewQueue);
 120
 121 PDESKTOP FASTCALL
 122 IntGetActiveDesktop(VOID);
 123
 124 NTSTATUS FASTCALL
 125 co_IntShowDesktop(PDESKTOP Desktop, ULONG Width, ULONG Height);
 126
 127 NTSTATUS FASTCALL
 128 IntHideDesktop(PDESKTOP Desktop);
 129
 130 BOOL IntSetThreadDesktop(IN HDESK hDesktop,
 131                          IN BOOL FreeOnFailure);
 132
 133 NTSTATUS FASTCALL
 134 IntValidateDesktopHandle(
 135    HDESK Desktop,
 136    KPROCESSOR_MODE AccessMode,
 137    ACCESS_MASK DesiredAccess,
 138    PDESKTOP *Object);
 139
 140 NTSTATUS FASTCALL
 141 IntParseDesktopPath(PEPROCESS Process,
 142                     PUNICODE_STRING DesktopPath,
 143                     HWINSTA *hWinSta,
 144                     HDESK *hDesktop);
 145
 146 VOID APIENTRY UserRedrawDesktop(VOID);
 147 BOOL IntRegisterShellHookWindow(HWND hWnd);
 148 BOOL IntDeRegisterShellHookWindow(HWND hWnd);
 149 VOID co_IntShellHookNotify(WPARAM Message, LPARAM lParam);
 150 HDC FASTCALL UserGetDesktopDC(ULONG,BOOL,BOOL);
 151
 152 #define IntIsActiveDesktop(Desktop) \
 153   ((Desktop)->rpwinstaParent->ActiveDesktop == (Desktop))
 154
 155 #define GET_DESKTOP_NAME(d)                                             \
 156     OBJECT_HEADER_TO_NAME_INFO(OBJECT_TO_OBJECT_HEADER(d)) ?            \
 157     &(OBJECT_HEADER_TO_NAME_INFO(OBJECT_TO_OBJECT_HEADER(d))->Name) :   \
 158     NULL
 159
 160 HWND FASTCALL IntGetMessageWindow(VOID);
 161
 162 static __inline PVOID
 163 DesktopHeapAlloc(IN PDESKTOP Desktop,
 164                  IN SIZE_T Bytes)
 165 {
 166     return RtlAllocateHeap(Desktop->pheapDesktop,
 167                            HEAP_NO_SERIALIZE,
 168                            Bytes);
 169 }
 170
 171 static __inline BOOL
 172 DesktopHeapFree(IN PDESKTOP Desktop,
 173                 IN PVOID lpMem)
 174 {
 175     return RtlFreeHeap(Desktop->pheapDesktop,
 176                        HEAP_NO_SERIALIZE,
 177                        lpMem);
 178 }
 179
 180 static __inline PVOID
 181 DesktopHeapReAlloc(IN PDESKTOP Desktop,
 182                    IN PVOID lpMem,
 183                    IN SIZE_T Bytes)
 184 {
 185 #if 0
 186     /* NOTE: ntoskrnl doesn't export RtlReAllocateHeap... */
 187     return RtlReAllocateHeap(Desktop->pheapDesktop,
 188                              HEAP_NO_SERIALIZE,
 189                              lpMem,
 190                              Bytes);
 191 #else
 192     SIZE_T PrevSize;
 193     PVOID pNew;
 194
 195     PrevSize = RtlSizeHeap(Desktop->pheapDesktop,
 196                            HEAP_NO_SERIALIZE,
 197                            lpMem);
 198
 199     if (PrevSize == Bytes)
 200         return lpMem;
 201
 202     pNew = RtlAllocateHeap(Desktop->pheapDesktop,
 203                            HEAP_NO_SERIALIZE,
 204                            Bytes);
 205     if (pNew != NULL)
 206     {
 207         if (PrevSize < Bytes)
 208             Bytes = PrevSize;
 209
 210         RtlCopyMemory(pNew,
 211                       lpMem,
 212                       Bytes);
 213
 214         RtlFreeHeap(Desktop->pheapDesktop,
 215                     HEAP_NO_SERIALIZE,
 216                     lpMem);
 217     }
 218
 219     return pNew;
 220 #endif
 221 }
 222
 223 static __inline ULONG_PTR
 224 DesktopHeapGetUserDelta(VOID)
 225 {
 226     PW32HEAP_USER_MAPPING Mapping;
 227     PTHREADINFO pti;
 228     PPROCESSINFO W32Process;
 229     PWIN32HEAP pheapDesktop;
 230     ULONG_PTR Delta = 0;
 231
 232     pti = PsGetCurrentThreadWin32Thread();
 233     if (!pti->rpdesk)
 234         return 0;
 235
 236     pheapDesktop = pti->rpdesk->pheapDesktop;
 237
 238     W32Process = PsGetCurrentProcessWin32Process();
 239     Mapping = W32Process->HeapMappings.Next;
 240     while (Mapping != NULL)
 241     {
 242         if (Mapping->KernelMapping == (PVOID)pheapDesktop)
 243         {
 244             Delta = (ULONG_PTR)Mapping->KernelMapping - (ULONG_PTR)Mapping->UserMapping;
 245             break;
 246         }
 247
 248         Mapping = Mapping->Next;
 249     }
 250
 251     return Delta;
 252 }
 253
 254 static __inline PVOID
 255 DesktopHeapAddressToUser(PVOID lpMem)
 256 {
 257     PW32HEAP_USER_MAPPING Mapping;
 258     PPROCESSINFO W32Process;
 259
 260     W32Process = PsGetCurrentProcessWin32Process();
 261     Mapping = W32Process->HeapMappings.Next;
 262     while (Mapping != NULL)
 263     {
 264         if ((ULONG_PTR)lpMem >= (ULONG_PTR)Mapping->KernelMapping &&
 265             (ULONG_PTR)lpMem < (ULONG_PTR)Mapping->KernelMapping + Mapping->Limit)
 266         {
 267             return (PVOID)(((ULONG_PTR)lpMem - (ULONG_PTR)Mapping->KernelMapping) +
 268                            (ULONG_PTR)Mapping->UserMapping);
 269         }
 270
 271         Mapping = Mapping->Next;
 272     }
 273
 274     return NULL;
 275 }
 276
 277 /* EOF */