subsys/win32k/ntuser/prop.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:        See COPYING in the top level directory
   4  * PROJECT:          ReactOS kernel
   5  * PURPOSE:          Window properties
   6  * FILE:             subsys/win32k/ntuser/prop.c
   7  * PROGRAMER:        Casper S. Hornstrup (chorns@users.sourceforge.net)
   8  * REVISION HISTORY:
   9  *       06-06-2001  CSH  Created
  10  */
  11 /* INCLUDES ******************************************************************/
  12
  13 #include <ddk/ntddk.h>
  14 #include <win32k/win32k.h>
  15 #include <include/object.h>
  16 #include <include/guicheck.h>
  17 #include <include/window.h>
  18 #include <include/class.h>
  19 #include <include/error.h>
  20 #include <include/winsta.h>
  21 #include <include/winpos.h>
  22 #include <include/callback.h>
  23 #include <include/msgqueue.h>
  24 #include <include/rect.h>
  25
  26 //#define NDEBUG
  27 #include <debug.h>
  28
  29 /* FUNCTIONS *****************************************************************/
  30
  31 PPROPERTY
  32 W32kGetProp(PWINDOW_OBJECT WindowObject, ATOM Atom)
  33 {
  34   PLIST_ENTRY ListEntry;
  35   PPROPERTY Property;
  36
  37   ListEntry = WindowObject->PropListHead.Flink;
  38   while (ListEntry != &WindowObject->PropListHead)
  39     {
  40       Property = CONTAINING_RECORD(ListEntry, PROPERTY, PropListEntry);
  41       if (Property->Atom == Atom)
  42         {
  43           return(Property);
  44         }
  45       ListEntry = ListEntry->Flink;
  46     }
  47   return(NULL);
  48 }
  49
  50 DWORD STDCALL
  51 NtUserBuildPropList(DWORD Unknown0,
  52                     DWORD Unknown1,
  53                     DWORD Unknown2,
  54                     DWORD Unknown3)
  55 {
  56   UNIMPLEMENTED
  57
  58   return 0;
  59 }
  60
  61 HANDLE STDCALL
  62 NtUserRemoveProp(HWND hWnd, ATOM Atom)
  63 {
  64   PWINDOW_OBJECT WindowObject;
  65   PPROPERTY Prop;
  66   HANDLE Data;
  67
  68   WindowObject = W32kGetWindowObject(hWnd);
  69   if (WindowObject == NULL)
  70     {
  71       return(NULL);
  72     }
  73
  74   Prop = W32kGetProp(WindowObject, Atom);
  75   if (Prop == NULL)
  76     {
  77       W32kReleaseWindowObject(WindowObject);
  78       return(NULL);
  79     }
  80   Data = Prop->Data;
  81   RemoveEntryList(&Prop->PropListEntry);
  82   ExFreePool(Prop);
  83   W32kReleaseWindowObject(WindowObject);
  84   return(Data);
  85 }
  86
  87 HANDLE STDCALL
  88 NtUserGetProp(HWND hWnd, ATOM Atom)
  89 {
  90   PWINDOW_OBJECT WindowObject;
  91   PPROPERTY Prop;
  92   HANDLE Data = NULL;
  93
  94   WindowObject = W32kGetWindowObject(hWnd);
  95   if (WindowObject == NULL)
  96     {
  97       return(FALSE);
  98     }
  99
 100   Prop = W32kGetProp(WindowObject, Atom);
 101   if (Prop != NULL)
 102     {
 103       Data = Prop->Data;
 104     }
 105   W32kReleaseWindowObject(WindowObject);
 106   return(Data);
 107 }
 108
 109 BOOL STDCALL
 110 NtUserSetProp(HWND hWnd, ATOM Atom, HANDLE Data)
 111 {
 112   PWINDOW_OBJECT WindowObject;
 113   PPROPERTY Prop;
 114
 115   WindowObject = W32kGetWindowObject(hWnd);
 116   if (WindowObject == NULL)
 117     {
 118       return(FALSE);
 119     }
 120
 121   Prop = W32kGetProp(WindowObject, Atom);
 122   if (Prop == NULL)
 123     {
 124       Prop = ExAllocatePool(PagedPool, sizeof(PROPERTY));
 125       if (Prop == NULL)
 126         {
 127           W32kReleaseWindowObject(WindowObject);
 128           return(FALSE);
 129         }
 130       Prop->Atom = Atom;
 131       InsertTailList(&WindowObject->PropListHead, &Prop->PropListEntry);
 132     }
 133   Prop->Data = Data;
 134   W32kReleaseWindowObject(WindowObject);
 135   return(TRUE);
 136 }