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