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