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 "ntuser.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     return NtUserGetProp( hwnd, str );
 130 }
 131
 132
 133 /***********************************************************************
 134  *              SetPropA   (USER32.@)
 135  */
 136 BOOL WINAPI SetPropA( HWND hwnd, LPCSTR str, HANDLE handle )
 137 {
 138     WCHAR buffer[ATOM_BUFFER_SIZE];
 139
 140     if (IS_INTRESOURCE(str)) return SetPropW( hwnd, (LPCWSTR)str, handle );
 141     if (!MultiByteToWideChar( CP_ACP, 0, str, -1, buffer, ATOM_BUFFER_SIZE )) return FALSE;
 142     return SetPropW( hwnd, buffer, handle );
 143 }
 144
 145
 146 /***********************************************************************
 147  *              SetPropW   (USER32.@)
 148  */
 149 BOOL WINAPI SetPropW( HWND hwnd, LPCWSTR str, HANDLE handle )
 150 {
 151     return NtUserSetProp( hwnd, str, handle );
 152 }
 153
 154
 155 /***********************************************************************
 156  *              RemovePropA   (USER32.@)
 157  */
 158 HANDLE WINAPI RemovePropA( HWND hwnd, LPCSTR str )
 159 {
 160     WCHAR buffer[ATOM_BUFFER_SIZE];
 161
 162     if (IS_INTRESOURCE(str)) return RemovePropW( hwnd, (LPCWSTR)str );
 163     if (!MultiByteToWideChar( CP_ACP, 0, str, -1, buffer, ATOM_BUFFER_SIZE )) return 0;
 164     return RemovePropW( hwnd, buffer );
 165 }
 166
 167
 168 /***********************************************************************
 169  *              RemovePropW   (USER32.@)
 170  */
 171 HANDLE WINAPI RemovePropW( HWND hwnd, LPCWSTR str )
 172 {
 173     return NtUserRemoveProp( hwnd, str );
 174 }
 175
 176
 177 /***********************************************************************
 178  *              EnumPropsExA   (USER32.@)
 179  */
 180 INT WINAPI EnumPropsExA(HWND hwnd, PROPENUMPROCEXA func, LPARAM lParam)
 181 {
 182     int ret = -1, i, count;
 183     property_data_t *list = get_properties( hwnd, &count );
 184
 185     if (list)
 186     {
 187         for (i = 0; i < count; i++)
 188         {
 189             char string[ATOM_BUFFER_SIZE];
 190             if (!GlobalGetAtomNameA( list[i].atom, string, ATOM_BUFFER_SIZE )) continue;
 191             if (!(ret = func( hwnd, string, (HANDLE)(ULONG_PTR)list[i].data, lParam ))) break;
 192         }
 193         HeapFree( GetProcessHeap(), 0, list );
 194     }
 195     return ret;
 196 }
 197
 198
 199 /***********************************************************************
 200  *              EnumPropsExW   (USER32.@)
 201  */
 202 INT WINAPI EnumPropsExW(HWND hwnd, PROPENUMPROCEXW func, LPARAM lParam)
 203 {
 204     int ret = -1, i, count;
 205     property_data_t *list = get_properties( hwnd, &count );
 206
 207     if (list)
 208     {
 209         for (i = 0; i < count; i++)
 210         {
 211             WCHAR string[ATOM_BUFFER_SIZE];
 212             if (!GlobalGetAtomNameW( list[i].atom, string, ATOM_BUFFER_SIZE )) continue;
 213             if (!(ret = func( hwnd, string, (HANDLE)(ULONG_PTR)list[i].data, lParam ))) break;
 214         }
 215         HeapFree( GetProcessHeap(), 0, list );
 216     }
 217     return ret;
 218 }