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