dlls/shell32/appbar.c

   1 /*
   2  * SHAppBarMessage implementation
   3  *
   4  * Copyright 2008 Vincent Povirk for CodeWeavers
   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 <stdlib.h>
  22 #include <string.h>
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winerror.h"
  29 #include "shellapi.h"
  30 #include "winuser.h"
  31
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(appbar);
  35
  36 struct appbar_data_msg  /* platform-independent data */
  37 {
  38     ULONG     hWnd;
  39     UINT      uCallbackMessage;
  40     UINT      uEdge;
  41     RECT      rc;
  42     ULONGLONG lParam;
  43 };
  44
  45 struct appbar_cmd
  46 {
  47     ULONG  return_map;
  48     DWORD  return_process;
  49     struct appbar_data_msg abd;
  50 };
  51
  52 struct appbar_response
  53 {
  54     ULONGLONG result;
  55     struct appbar_data_msg abd;
  56 };
  57
  58 /*************************************************************************
  59  * SHAppBarMessage            [SHELL32.@]
  60  */
  61 UINT_PTR WINAPI SHAppBarMessage(DWORD msg, PAPPBARDATA data)
  62 {
  63     struct appbar_cmd command;
  64     struct appbar_response* response;
  65     HANDLE return_map;
  66     LPVOID return_view;
  67     HWND appbarmsg_window;
  68     COPYDATASTRUCT cds;
  69     DWORD_PTR msg_result;
  70     UINT_PTR ret = 0;
  71
  72     TRACE("msg=%ld, data={cb=%ld, hwnd=%p}\n", msg, data->cbSize, data->hWnd);
  73
  74     /* These members are message dependent */
  75     switch(msg)
  76     {
  77     case ABM_NEW:
  78         TRACE("callback: %x\n", data->uCallbackMessage);
  79         break;
  80
  81     case ABM_GETAUTOHIDEBAR:
  82         TRACE("edge: %d\n", data->uEdge);
  83         break;
  84
  85     case ABM_QUERYPOS:
  86     case ABM_SETPOS:
  87         TRACE("edge: %d, rc: %s\n", data->uEdge, wine_dbgstr_rect(&data->rc));
  88         break;
  89
  90     case ABM_GETTASKBARPOS:
  91         TRACE("rc: %s\n", wine_dbgstr_rect(&data->rc));
  92         break;
  93
  94     case ABM_SETAUTOHIDEBAR:
  95         TRACE("edge: %d, lParam: %Ix\n", data->uEdge, data->lParam);
  96         break;
  97
  98     default:
  99         FIXME("unknown msg: %ld\n", msg);
 100         break;
 101     }
 102
 103     if (data->cbSize < sizeof(APPBARDATA))
 104     {
 105         WARN("data at %p is too small\n", data);
 106         return FALSE;
 107     }
 108
 109     command.abd.hWnd = HandleToLong( data->hWnd );
 110     command.abd.uCallbackMessage = data->uCallbackMessage;
 111     command.abd.uEdge = data->uEdge;
 112     command.abd.rc = data->rc;
 113     command.abd.lParam = data->lParam;
 114
 115     return_map = CreateFileMappingW(INVALID_HANDLE_VALUE, 0, PAGE_READWRITE, 0, sizeof(struct appbar_response), NULL);
 116     if (return_map == NULL)
 117     {
 118         ERR("couldn't create file mapping\n");
 119         return 0;
 120     }
 121     command.return_map = HandleToUlong( return_map );
 122
 123     command.return_process = GetCurrentProcessId();
 124
 125     appbarmsg_window = FindWindowW(L"WineAppBar", NULL);
 126     if (appbarmsg_window == NULL)
 127     {
 128         ERR("couldn't find appbar window\n");
 129         CloseHandle(return_map);
 130         return 0;
 131     }
 132
 133     cds.dwData = msg;
 134     cds.cbData = sizeof(command);
 135     cds.lpData = &command;
 136
 137     SendMessageTimeoutW(appbarmsg_window, WM_COPYDATA, (WPARAM)data->hWnd, (LPARAM)&cds, SMTO_BLOCK, INFINITE, &msg_result);
 138
 139     return_view = MapViewOfFile(return_map, FILE_MAP_READ, 0, 0, sizeof(struct appbar_response));
 140     if (return_view == NULL)
 141     {
 142         ERR("MapViewOfFile failed\n");
 143         CloseHandle(return_map);
 144         return 0;
 145     }
 146
 147     response = return_view;
 148
 149     ret = response->result;
 150     if (ret)
 151     {
 152         data->hWnd = UlongToHandle( response->abd.hWnd );
 153         data->uCallbackMessage = response->abd.uCallbackMessage;
 154         data->uEdge = response->abd.uEdge;
 155         data->rc = response->abd.rc;
 156         data->lParam = response->abd.lParam;
 157     }
 158     UnmapViewOfFile(return_view);
 159
 160     CloseHandle(return_map);
 161
 162     return ret;
 163 }