dlls/user32/property.c

   1 /*
   2  * Window properties
   3  *
   4  * Copyright 1995, 1996, 2001 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 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <stdarg.h>
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "wownt32.h"
  31 #include "wine/unicode.h"
  32 #include "wine/winuser16.h"
  33 #include "wine/server.h"
  34
  35 /* size of buffer needed to store an atom string */
  36 #define ATOM_BUFFER_SIZE 256
  37
  38
  39 /***********************************************************************
  40  *              get_properties
  41  *
  42  * Retrieve the list of properties of a given window.
  43  * Returned buffer must be freed by caller.
  44  */
  45 static property_data_t *get_properties( HWND hwnd, int *count )
  46 {
  47     property_data_t *data;
  48     int total = 32;
  49
  50     while (total)
  51     {
  52         int res = 0;
  53         if (!(data = HeapAlloc( GetProcessHeap(), 0, total * sizeof(*data) ))) break;
  54         *count = 0;
  55         SERVER_START_REQ( get_window_properties )
  56         {
  57             req->window = hwnd;
  58             wine_server_set_reply( req, data, total * sizeof(*data) );
  59             if (!wine_server_call( req )) res = reply->total;
  60         }
  61         SERVER_END_REQ;
  62         if (res && res <= total)
  63         {
  64             *count = res;
  65             return data;
  66         }
  67         HeapFree( GetProcessHeap(), 0, data );
  68         total = res;  /* restart with larger buffer */
  69     }
  70     return NULL;
  71 }
  72
  73
  74 /***********************************************************************
  75  *              EnumPropsA_relay
  76  *
  77  * relay to call the EnumProps callback function from EnumPropsEx
  78  */
  79 static BOOL CALLBACK EnumPropsA_relay( HWND hwnd, LPSTR str, HANDLE handle, ULONG_PTR lparam )
  80 {
  81     PROPENUMPROCA func = (PROPENUMPROCA)lparam;
  82     return func( hwnd, str, handle );
  83 }
  84
  85
  86 /***********************************************************************
  87  *              EnumPropsW_relay
  88  *
  89  * relay to call the EnumProps callback function from EnumPropsEx
  90  */
  91 static BOOL CALLBACK EnumPropsW_relay( HWND hwnd, LPWSTR str, HANDLE handle, ULONG_PTR lparam )
  92 {
  93     PROPENUMPROCW func = (PROPENUMPROCW)lparam;
  94     return func( hwnd, str, handle );
  95 }
  96
  97
  98 /***********************************************************************
  99  *              EnumPropsA   (USER32.@)
 100  */
 101 INT WINAPI EnumPropsA( HWND hwnd, PROPENUMPROCA func )
 102 {
 103     return EnumPropsExA( hwnd, EnumPropsA_relay, (LPARAM)func );
 104 }
 105
 106
 107 /***********************************************************************
 108  *              EnumPropsW   (USER32.@)
 109  */
 110 INT WINAPI EnumPropsW( HWND hwnd, PROPENUMPROCW func )
 111 {
 112     return EnumPropsExW( hwnd, EnumPropsW_relay, (LPARAM)func );
 113 }
 114
 115
 116 /***********************************************************************
 117  *              GetPropA   (USER32.@)
 118  */
 119 HANDLE WINAPI GetPropA( HWND hwnd, LPCSTR str )
 120 {
 121     WCHAR buffer[ATOM_BUFFER_SIZE];
 122
 123     if (!HIWORD(str)) return GetPropW( hwnd, (LPCWSTR)str );
 124     if (!MultiByteToWideChar( CP_ACP, 0, str, -1, buffer, ATOM_BUFFER_SIZE )) return 0;
 125     return GetPropW( hwnd, buffer );
 126 }
 127
 128
 129 /***********************************************************************
 130  *              GetPropW   (USER32.@)
 131  */
 132 HANDLE WINAPI GetPropW( HWND hwnd, LPCWSTR str )
 133 {
 134     HANDLE ret = 0;
 135
 136     SERVER_START_REQ( get_window_property )
 137     {
 138         req->window = hwnd;
 139         if (!HIWORD(str)) req->atom = LOWORD(str);
 140         else wine_server_add_data( req, str, strlenW(str) * sizeof(WCHAR) );
 141         if (!wine_server_call_err( req )) ret = reply->handle;
 142     }
 143     SERVER_END_REQ;
 144     return ret;
 145 }
 146
 147
 148 /***********************************************************************
 149  *              SetPropA   (USER32.@)
 150  */
 151 BOOL WINAPI SetPropA( HWND hwnd, LPCSTR str, HANDLE handle )
 152 {
 153     WCHAR buffer[ATOM_BUFFER_SIZE];
 154
 155     if (!HIWORD(str)) return SetPropW( hwnd, (LPCWSTR)str, handle );
 156     if (!MultiByteToWideChar( CP_ACP, 0, str, -1, buffer, ATOM_BUFFER_SIZE )) return FALSE;
 157     return SetPropW( hwnd, buffer, handle );
 158 }
 159
 160
 161 /***********************************************************************
 162  *              SetPropW   (USER32.@)
 163  */
 164 BOOL WINAPI SetPropW( HWND hwnd, LPCWSTR str, HANDLE handle )
 165 {
 166     BOOL ret;
 167
 168     SERVER_START_REQ( set_window_property )
 169     {
 170         req->window = hwnd;
 171         req->handle = handle;
 172         if (!HIWORD(str)) req->atom = LOWORD(str);
 173         else wine_server_add_data( req, str, strlenW(str) * sizeof(WCHAR) );
 174         ret = !wine_server_call_err( req );
 175     }
 176     SERVER_END_REQ;
 177     return ret;
 178 }
 179
 180
 181 /***********************************************************************
 182  *              RemovePropA   (USER32.@)
 183  */
 184 HANDLE WINAPI RemovePropA( HWND hwnd, LPCSTR str )
 185 {
 186     WCHAR buffer[ATOM_BUFFER_SIZE];
 187
 188     if (!HIWORD(str)) return RemovePropW( hwnd, (LPCWSTR)str );
 189     if (!MultiByteToWideChar( CP_ACP, 0, str, -1, buffer, ATOM_BUFFER_SIZE )) return 0;
 190     return RemovePropW( hwnd, buffer );
 191 }
 192
 193
 194 /***********************************************************************
 195  *              RemovePropW   (USER32.@)
 196  */
 197 HANDLE WINAPI RemovePropW( HWND hwnd, LPCWSTR str )
 198 {
 199     HANDLE ret = 0;
 200
 201     SERVER_START_REQ( remove_window_property )
 202     {
 203         req->window = hwnd;
 204         if (!HIWORD(str)) req->atom = LOWORD(str);
 205         else wine_server_add_data( req, str, strlenW(str) * sizeof(WCHAR) );
 206         if (!wine_server_call_err( req )) ret = reply->handle;
 207     }
 208     SERVER_END_REQ;
 209
 210     return ret;
 211 }
 212
 213
 214 /***********************************************************************
 215  *              EnumPropsExA   (USER32.@)
 216  */
 217 INT WINAPI EnumPropsExA(HWND hwnd, PROPENUMPROCEXA func, LPARAM lParam)
 218 {
 219     int ret = -1, i, count;
 220     property_data_t *list = get_properties( hwnd, &count );
 221
 222     if (list)
 223     {
 224         for (i = 0; i < count; i++)
 225         {
 226             char string[ATOM_BUFFER_SIZE];
 227             if (!GlobalGetAtomNameA( list[i].atom, string, ATOM_BUFFER_SIZE )) continue;
 228             if (!(ret = func( hwnd, string, list[i].handle, lParam ))) break;
 229         }
 230         HeapFree( GetProcessHeap(), 0, list );
 231     }
 232     return ret;
 233 }
 234
 235
 236 /***********************************************************************
 237  *              EnumPropsExW   (USER32.@)
 238  */
 239 INT WINAPI EnumPropsExW(HWND hwnd, PROPENUMPROCEXW func, LPARAM lParam)
 240 {
 241     int ret = -1, i, count;
 242     property_data_t *list = get_properties( hwnd, &count );
 243
 244     if (list)
 245     {
 246         for (i = 0; i < count; i++)
 247         {
 248             WCHAR string[ATOM_BUFFER_SIZE];
 249             if (!GlobalGetAtomNameW( list[i].atom, string, ATOM_BUFFER_SIZE )) continue;
 250             if (!(ret = func( hwnd, string, list[i].handle, lParam ))) break;
 251         }
 252         HeapFree( GetProcessHeap(), 0, list );
 253     }
 254     return ret;
 255 }
 256
 257
 258 /***********************************************************************
 259  *              EnumProps   (USER.27)
 260  */
 261 INT16 WINAPI EnumProps16( HWND16 hwnd, PROPENUMPROC16 func )
 262 {
 263     int ret = -1, i, count;
 264     property_data_t *list = get_properties( HWND_32(hwnd), &count );
 265
 266     if (list)
 267     {
 268         char string[ATOM_BUFFER_SIZE];
 269         SEGPTR segptr = MapLS( string );
 270         WORD args[4];
 271         DWORD result;
 272
 273         for (i = 0; i < count; i++)
 274         {
 275             if (list[i].string)  /* it was a string originally */
 276             {
 277                 if (!GlobalGetAtomNameA( list[i].atom, string, ATOM_BUFFER_SIZE )) continue;
 278                 args[3] = hwnd;
 279                 args[2] = SELECTOROF(segptr);
 280                 args[1] = OFFSETOF(segptr);
 281                 args[0] = LOWORD(list[i].handle);
 282             }
 283             else
 284             {
 285                 args[3] = hwnd;
 286                 args[2] = 0;
 287                 args[1] = list[i].atom;
 288                 args[0] = LOWORD(list[i].handle);
 289             }
 290             WOWCallback16Ex( (DWORD)func, WCB16_PASCAL, sizeof(args), args, &result );
 291             if (!(ret = LOWORD(result))) break;
 292         }
 293         UnMapLS( segptr );
 294         HeapFree( GetProcessHeap(), 0, list );
 295     }
 296     return ret;
 297 }