dlls/win32u/window.c

   1 /*
   2  * Window related functions
   3  *
   4  * Copyright 1993, 1994 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21
  22 #if 0
  23 #pragma makedep unix
  24 #endif
  25
  26 #include "ntstatus.h"
  27 #define WIN32_NO_STATUS
  28 #include "win32u_private.h"
  29 #include "wine/server.h"
  30
  31
  32 /***********************************************************************
  33  *           NtUserGetProp   (win32u.@)
  34  *
  35  * NOTE Native allows only ATOMs as the second argument. We allow strings
  36  *      to save extra server call in GetPropW.
  37  */
  38 HANDLE WINAPI NtUserGetProp( HWND hwnd, const WCHAR *str )
  39 {
  40     ULONG_PTR ret = 0;
  41
  42     SERVER_START_REQ( get_window_property )
  43     {
  44         req->window = wine_server_user_handle( hwnd );
  45         if (IS_INTRESOURCE(str)) req->atom = LOWORD(str);
  46         else wine_server_add_data( req, str, lstrlenW(str) * sizeof(WCHAR) );
  47         if (!wine_server_call_err( req )) ret = reply->data;
  48     }
  49     SERVER_END_REQ;
  50     return (HANDLE)ret;
  51 }
  52
  53 /*****************************************************************************
  54  *           NtUserSetProp    (win32u.@)
  55  *
  56  * NOTE Native allows only ATOMs as the second argument. We allow strings
  57  *      to save extra server call in SetPropW.
  58  */
  59 BOOL WINAPI NtUserSetProp( HWND hwnd, const WCHAR *str, HANDLE handle )
  60 {
  61     BOOL ret;
  62
  63     SERVER_START_REQ( set_window_property )
  64     {
  65         req->window = wine_server_user_handle( hwnd );
  66         req->data   = (ULONG_PTR)handle;
  67         if (IS_INTRESOURCE(str)) req->atom = LOWORD(str);
  68         else wine_server_add_data( req, str, lstrlenW(str) * sizeof(WCHAR) );
  69         ret = !wine_server_call_err( req );
  70     }
  71     SERVER_END_REQ;
  72     return ret;
  73 }
  74
  75
  76 /***********************************************************************
  77  *           NtUserRemoveProp   (win32u.@)
  78  *
  79  * NOTE Native allows only ATOMs as the second argument. We allow strings
  80  *      to save extra server call in RemovePropW.
  81  */
  82 HANDLE WINAPI NtUserRemoveProp( HWND hwnd, const WCHAR *str )
  83 {
  84     ULONG_PTR ret = 0;
  85
  86     SERVER_START_REQ( remove_window_property )
  87     {
  88         req->window = wine_server_user_handle( hwnd );
  89         if (IS_INTRESOURCE(str)) req->atom = LOWORD(str);
  90         else wine_server_add_data( req, str, lstrlenW(str) * sizeof(WCHAR) );
  91         if (!wine_server_call_err( req )) ret = reply->data;
  92     }
  93     SERVER_END_REQ;
  94
  95     return (HANDLE)ret;
  96 }
  97
  98
  99 /*****************************************************************************
 100  *           NtUserGetLayeredWindowAttributes (win32u.@)
 101  */
 102 BOOL WINAPI NtUserGetLayeredWindowAttributes( HWND hwnd, COLORREF *key, BYTE *alpha, DWORD *flags )
 103 {
 104     BOOL ret;
 105
 106     SERVER_START_REQ( get_window_layered_info )
 107     {
 108         req->handle = wine_server_user_handle( hwnd );
 109         if ((ret = !wine_server_call_err( req )))
 110         {
 111             if (key) *key = reply->color_key;
 112             if (alpha) *alpha = reply->alpha;
 113             if (flags) *flags = reply->flags;
 114         }
 115     }
 116     SERVER_END_REQ;
 117
 118     return ret;
 119 }
 120
 121 /*****************************************************************************
 122  *           NtUserBuildHwndList (win32u.@)
 123  */
 124 NTSTATUS WINAPI NtUserBuildHwndList( HDESK desktop, ULONG unk2, ULONG unk3, ULONG unk4,
 125                                      ULONG thread_id, ULONG count, HWND *buffer, ULONG *size )
 126 {
 127     user_handle_t *list = (user_handle_t *)buffer;
 128     int i;
 129     NTSTATUS status;
 130
 131     SERVER_START_REQ( get_window_children )
 132     {
 133         req->desktop = wine_server_obj_handle( desktop );
 134         req->tid = thread_id;
 135         if (count) wine_server_set_reply( req, list, (count - 1) * sizeof(user_handle_t) );
 136         status = wine_server_call( req );
 137         if (status && status != STATUS_BUFFER_TOO_SMALL) return status;
 138         *size = reply->count + 1;
 139     }
 140     SERVER_END_REQ;
 141     if (*size > count) return STATUS_BUFFER_TOO_SMALL;
 142
 143     /* start from the end since HWND is potentially larger than user_handle_t */
 144     for (i = *size - 2; i >= 0; i--)
 145         buffer[i] = wine_server_ptr_handle( list[i] );
 146     buffer[*size - 1] = HWND_BOTTOM;
 147     return STATUS_SUCCESS;
 148 }