/[winpt]/trunk/Src/wptW32API.cpp
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revision 23 by twoaday, Fri Sep 30 10:10:16 2005 UTC revision 278 by twoaday, Mon Jan 15 22:02:04 2007 UTC
# Line 1  Line 1 
1  /* wptW32API.cpp - Common W32 API functions  /* wptW32API.cpp - Common W32 API functions
2   *      Copyright (C) 2001, 2002, 2003 Timo Schulz   *      Copyright (C) 2001, 2002, 2003, 2005, 2006 Timo Schulz
3   *   *
4   * This file is part of WinPT.   * This file is part of WinPT.
5   *   *
6   * WinPT is free software; you can redistribute it and/or modify   * WinPT is free software; you can redistribute it and/or modify
7   * it under the terms of the GNU General Public License as published by   * it under the terms of the GNU General Public License as published by
8   * the Free Software Foundation; either version 2 of the License, or   * the Free Software Foundation; either version 2 of the License, or
9   * (at your option) any later version.   * (at your option) any later version.
10   *   *
11   * WinPT is distributed in the hope that it will be useful,   * WinPT is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License for more details.   * GNU General Public License for more details.
15   *   */
16   * You should have received a copy of the GNU General Public License  #ifdef HAVE_CONFIG_H
17   * along with WinPT; if not, write to the Free Software Foundation,  #include <config.h>
18   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA  #endif
19   */  
20    #include <windows.h>
21  #include <windows.h>  #include <stdio.h>
22  #include <stdio.h>  #include <sys/types.h>
23  #include <sys/types.h>  #include <sys/stat.h>
24  #include <sys/stat.h>  #include <shellapi.h>
25  #include <shellapi.h>  #include <shlobj.h>
26  #include <shlobj.h>  #include <commctrl.h>
27  #include <commctrl.h>  #include <time.h>
28    
29  #include "wptNLS.h"  #include "wptNLS.h"
30  #include "wptW32API.h"  #include "wptW32API.h"
31  #include "wptErrors.h"  #include "wptErrors.h"
32  #include "wptVersion.h"  #include "wptVersion.h"
33  #include "wptTypes.h"  #include "wptUTF8.h"
34    #include "wptTypes.h"
35    
36  extern "C" void _SHFree (void *p);  
37    extern "C" void _SHFree (void *p);
38  /* The the text of a menu item. */  
39  void  
40  set_menu_text (HMENU menu, int m_uid, const char *text)  /* Insert a new item into the menu @hm at position @pos. */
41  {  void
42      MENUITEMINFO mii;  insert_menu_item (HMENU hm, int pos, UINT m_id, const char *text)
43      char menu_text[80];  {
44            MENUITEMINFO mi;
45      memset (&mii, 0, sizeof (mii));  
46      mii.cbSize = sizeof (mii);      memset (&mi, 0, sizeof mi);
47      mii.fMask = MIIM_TYPE;      mi.cbSize = sizeof mi;
48      mii.dwTypeData = menu_text;      mi.fType = MF_STRING;
49      mii.cch = sizeof (menu_text);      mi.dwTypeData = (char *)text;
50      GetMenuItemInfo (menu, m_uid, FALSE, &mii);      mi.cch = strlen (text);
51            mi.wID = m_id;
52      memset (&mii, 0, sizeof mii);      mi.fMask = MIIM_ID|MIIM_DATA| MIIM_TYPE;
53      mii.cbSize = sizeof mii;      InsertMenuItem (hm, pos, FALSE, &mi);
54      mii.fMask = MIIM_TYPE;  }
55      mii.fType = MFT_STRING;  
56      mii.dwTypeData = (char *) text;  
57      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  static void
58  } /* set_menu_text */  set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
59    {
60        MENUITEMINFO mii;
61  void      
62  set_menu_state (HMENU menu, int m_uid, int state)      memset (&mii, 0, sizeof mii);
63  {            mii.cbSize = sizeof mii;
64      MENUITEMINFO mii;      mii.fMask = MIIM_TYPE;
65        mii.fType = MFT_STRING;
66      memset( &mii, 0, sizeof (mii) );      mii.dwTypeData = (char *) text;
67      mii.cbSize = sizeof (mii);      SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
68      mii.fMask = MIIM_STATE;  }
69      mii.fState = state;  
70      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  
71  } /* set_menu_state */  /* Set the text of a menu item @m_uid to @text. */
72    void
73    set_menu_text (HMENU menu, UINT m_uid, const char *text)
74  /* Use the common dialog to request a file from the user.  {
75     id can be either FILE_OPEN or FILE_SAVE.      set_menu_text_ext (menu, 0, m_uid, text);
76     The return value is the file name or NULL if cancel was chosen. */  }
77  const char *  
78  get_filename_dlg (HWND hwnd, int id, const char * title,  
79                    const char * filter, const char * name)  /* Set the text of a menu item with the position @pos to @text. */
80  {  void
81      static char file[512] = "";  set_menu_text_bypos (HMENU menu, UINT pos, const char *text)
82      OPENFILENAME open;  {
83            set_menu_text_ext (menu, 1, pos, text);
84      if (name && strlen (name) < (sizeof (file)-1))  }
85          strcpy (file, name);  
86      else  
87          memset (file, 0, sizeof (file));  /* Set the state of a menu item @m_uid to @state. */
88      if (!filter)  void
89          filter = _("All Files (*.*)\0*.*\0\0");  set_menu_state (HMENU menu, UINT m_uid, UINT state)
90      memset (&open, 0, sizeof (open));  {      
91      open.lStructSize = sizeof (OPENFILENAME);      MENUITEMINFO mii;
92      open.hInstance = glob_hinst;  
93      open.lpstrTitle = title;      memset (&mii, 0, sizeof (mii));
94      open.lpstrFilter = filter;      mii.cbSize = sizeof (mii);
95      open.hwndOwner = hwnd;      mii.fMask = MIIM_STATE;
96      open.lpstrFile = file;      mii.fState = state;
97      open.nMaxFile = sizeof (file) - 1;      SetMenuItemInfo (menu, m_uid, FALSE, &mii);
98      if (id == FILE_OPEN)  }
99          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;  
100      else  
101          open.Flags = OFN_OVERWRITEPROMPT;  /* Retrieve the state of the menu item @m_uid and return it. */
102    UINT
103      if (id == FILE_OPEN && GetOpenFileName (&open))  get_menu_state (HMENU menu, UINT m_uid)
104          return open.lpstrFile;  {
105      else if (id == FILE_SAVE && GetSaveFileName (&open))      MENUITEMINFO mii;
106          return open.lpstrFile;  
107            memset (&mii, 0, sizeof (mii));
108      return NULL;      mii.cbSize = sizeof (mii);
109  }      mii.fMask = MIIM_STATE;
110        GetMenuItemInfo (menu, m_uid, FALSE, &mii);
111  /* Use the common dialog to allow the user to select a folder.      return mii.fState;
112     The return value is either the folder path or NULL if cancel was chosen. */  }
113  const char*  
114  get_folder_dlg (HWND hwnd, const char * title, const char * name)  
115  {  enum {
116      static char folder[MAX_PATH+1] = "";      CDLG_FILE_OPEN = 0,
117      BROWSEINFO bi;      CDLG_FILE_SAVE = 1
118      ITEMIDLIST * il;  };
119    
120      memset (&bi, 0, sizeof (bi));  /* Use the common dialog to request a file from the user.
121      bi.hwndOwner = hwnd;     id can be either FILE_OPEN or FILE_SAVE.
122      if (title)     The return value is the file name or NULL if cancel was chosen. */
123          bi.lpszTitle = title;  const char *
124      if (name && strlen (name) < MAX_PATH-1)  get_filename_dlg (HWND hwnd, int id, const char *title,
125          strcpy (folder, name);                    const char *filter, const char *name)
126      else  {
127          memset (folder, 0, sizeof (folder));      static char file[2*MAX_PATH+1] = "";
128      il = SHBrowseForFolder (&bi);      char workdir[MAX_PATH+1];
129      if (il) {      char *sel_file = NULL;
130          SHGetPathFromIDList (il, folder);      OPENFILENAME open;
131          _SHFree (il);      
132          return folder;      if (name && strlen (name) < (DIM (file)-1))
133      }          strcpy (file, name);
134      return NULL;      else
135  }          memset (file, 0, sizeof (file));
136        if (!filter)
137            filter = "All Files (*.*)\0*.*\0\0";
138  /* Return the clipboard contents as a string or NULL  
139     if the clipboard does not contain text. */      GetCurrentDirectory (MAX_PATH, workdir);
140  char*      memset (&open, 0, sizeof (open));
141  get_clip_text (HWND hwnd)      open.lStructSize = sizeof (OPENFILENAME);
142  {      open.hInstance = glob_hinst;
143      HANDLE clipmem;      open.lpstrTitle = title;
144      char *cliptxt, *p;        open.lpstrFilter = filter;
145      int len;      open.hwndOwner = hwnd;
146            open.lpstrFile = file;
147      if (OpenClipboard (hwnd) == FALSE)      open.nMaxFile = DIM (file) - 1;
148          return NULL;      if (id == CDLG_FILE_OPEN)
149      clipmem = GetClipboardData (CF_TEXT);          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
150      if (clipmem == NULL) {      else
151          p = NULL;          open.Flags = OFN_OVERWRITEPROMPT;
152          goto leave;  
153      }      if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
154      cliptxt = (char *) GlobalLock (clipmem);          sel_file = open.lpstrFile;
155      if (cliptxt == NULL) {      else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
156          p = NULL;          sel_file = open.lpstrFile;
157          goto leave;      SetCurrentDirectory (workdir);
158      }      
159            return sel_file;
160      len =  strlen (cliptxt);  }
161      p = new char[len + 1];  
162      if (!p)  const char*
163          BUG (NULL);  get_filesave_dlg (HWND hwnd, const char *title,
164      memcpy (p, cliptxt, len);                    const char *filter, const char *name)
165      p[len] = '\0';  {
166      GlobalUnlock (clipmem);      return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
167        }
168  leave:  
169      CloseClipboard ();  const char*
170      return p;  get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
171  }                    const char *name)
172    {
173        return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
174  /* Set the the given text to the clipboard. */  }
175  int  
176  set_clip_text (HWND hwnd, const char *text, int nbytes)  
177  {      /* Use the common dialog to allow the user to select a folder.
178      HANDLE clipmem;     The return value is either the folder path or NULL if cancel was chosen. */
179      int rc = 0;  const char*
180      char *p;  get_folder_dlg (HWND hwnd, const char *title, const char *name)
181        {
182      if (OpenClipboard (hwnd) == FALSE)        static char folder[MAX_PATH+1] = "";
183          return WPTERR_CLIP_OPEN;      BROWSEINFO bi;
184      EmptyClipboard ();      ITEMIDLIST *il;
185    
186      clipmem = GlobalAlloc (GHND, nbytes + 1);      memset (&bi, 0, sizeof (bi));
187      if (clipmem == NULL)      bi.hwndOwner = hwnd;
188          BUG (NULL);      if (title)
189      p = (char *) GlobalLock (clipmem);          bi.lpszTitle = title;
190      if (p == NULL) {      if (name && strlen (name) < MAX_PATH-1)
191          rc = WPTERR_GENERAL;;          strcpy (folder, name);
192          goto leave;          else
193      }          memset (folder, 0, sizeof (folder));
194      memcpy (p, text, nbytes);      il = SHBrowseForFolder (&bi);
195      p[nbytes] = '\0';      if (il != NULL) {
196                SHGetPathFromIDList (il, folder);
197      GlobalUnlock (clipmem);          _SHFree (il);
198      SetClipboardData (CF_TEXT, clipmem);          return folder;
199            }
200  leave:      return NULL;
201      CloseClipboard ();  }
202      return rc;  
203  } /* set_clip_text */  
204    /* Return the clipboard contents as a string or NULL
205       if the clipboard does not contain text. */
206  /* Append or prepend some text to the clipboard contents.  char*
207     If as_footer = 1, append the text otherwise prepend. */  get_clip_text (HWND hwnd)
208  int  {
209  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)      HANDLE clipmem;
210  {      char *cliptxt, *p;  
211      char *p, *new_text;      int len;
212        
213      p = get_clip_text (hwnd);      if (OpenClipboard (hwnd) == FALSE)
214      if (!p)          return NULL;
215          return WPTERR_CLIP_GET;      clipmem = GetClipboardData (CF_TEXT);
216      new_text = new char [strlen (p)+strlen (text)+8];      if (clipmem == NULL) {
217      if (!new_text)          p = NULL;
218          BUG (0);          goto leave;
219      if (as_footer == 0)      }
220          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);      cliptxt = (char *) GlobalLock (clipmem);
221      else      if (cliptxt == NULL) {
222          sprintf (new_text, "%s\n%s\n\n", p, text);          p = NULL;
223      set_clip_text (hwnd, new_text, strlen (new_text)+1);          goto leave;
224      free_if_alloc (p);      }
225      free_if_alloc (new_text);      
226      return 0;      len =  strlen (cliptxt);
227  }      p = new char[len + 1];
228        if (!p)
229            BUG (NULL);
230  /* Make a file name out of the path, the file and an extension. */      memcpy (p, cliptxt, len);
231  char*      p[len] = '\0';
232  make_filename (const char *path, const char *file, const char *ext)      GlobalUnlock (clipmem);
233  {      
234      char *p;  leave:
235      size_t size = 0;      CloseClipboard ();
236        return p;
237      if( path && *path )  }
238          size += strlen( path );  
239      if( file && *file )  
240          size += strlen( file );  /* Set @text as the new clipboard content. */
241      if( ext && *ext )  int
242          size += strlen( ext );  set_clip_text (HWND hwnd, const char *text, int nbytes)
243      p = new char[size + 4];  {    
244      memset( p, 0, size );      HANDLE clipmem;
245      if( path ) {      int rc = 0;
246          strcat( p, path );      char *p;
247          if( path[strlen( path ) -1] != '\\' )      
248              strcat( p, "\\" );      if (OpenClipboard (hwnd) == FALSE)  
249      }          return WPTERR_CLIP_OPEN;
250      if( file )      EmptyClipboard ();
251          strcat( p, file );  
252      if( ext ) {      clipmem = GlobalAlloc (GHND, nbytes + 1);
253          strcat( p, "." );      if (clipmem == NULL)
254          strcat( p, ext );          BUG (NULL);
255      }      p = (char *) GlobalLock (clipmem);
256      return p;      if (p == NULL) {
257  } /* make_filename */          CloseClipboard ();
258            GlobalFree (clipmem);
259            return WPTERR_GENERAL;
260  /* return 0 if it exists, otherwise >0. */      }
261  int      memcpy (p, text, nbytes);
262  file_exist_check (const char * fname)      p[nbytes] = '\0';
263  {            
264      HANDLE fh;        SetClipboardData (CF_TEXT, clipmem);
265        GlobalUnlock (clipmem);
266      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,      CloseClipboard ();
267                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );      GlobalFree (clipmem);
268      if( fh == INVALID_HANDLE_VALUE )      
269          return WPTERR_FILE_EXIST;      return rc;
270      CloseHandle( fh );  }
271      return 0;  
272  }  
273    /* Append or prepend some text to the clipboard contents.
274       If as_footer = 1, append the text otherwise prepend. */
275  /* Check if the current folder exists.  int
276     Return 0 for success. */  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
277  int  {
278  dir_exist_check (const char *dir)      const char *fmt;
279  {      char *p, *new_text;
280      struct stat statbuf;      
281            p = get_clip_text (hwnd);
282      if( stat( dir, &statbuf ) == -1 )      if (!p)
283          return WPTERR_GENERAL;          return WPTERR_CLIP_GET;
284      if( statbuf.st_mode & _S_IFDIR )      if (as_footer == 0)
285          return 0;          fmt = "%s\r\n%s\r\n\r\n";
286      return WPTERR_GENERAL;      else
287  }          fmt = "%s\n%s\n\n";
288        new_text = new char [strlen (p)+strlen (text)+strlen (fmt)+2];
289        if (!new_text)
290  /* Return the file size of the given file. */          BUG (0);
291  size_t      if (as_footer == 0)
292  get_file_size (const char *fname)          sprintf (new_text, fmt, text, p);
293  {      else
294      size_t fsize;          sprintf (new_text, fmt, p, text);
295      HANDLE fh;      set_clip_text (hwnd, new_text, strlen (new_text)+1);
296        free_if_alloc (p);
297      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,      free_if_alloc (new_text);
298                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );      return 0;
299      if( fh == INVALID_HANDLE_VALUE )  }
300          return 0;  
301      fsize = GetFileSize( fh, NULL );  
302      if( fsize == 0xFFFFFFFF )  /* Make a file name out of the path @path, the file @file and
303          fsize = 0;     an extension. @ext.
304      CloseHandle( fh );     Return value: the full file name on success. */
305      return fsize;  char*
306  } /* get_file_size */  make_filename (const char *path, const char *file, const char *ext)
307    {
308        char *p;
309  int      size_t size = 0;
310  init_file_lock( LOCK *ctx, const char *file )  
311  {      if (path && *path)
312                size += strlen (path);
313      ctx->size = get_file_size( file );      if (file && *file)
314      ctx->file = m_strdup( file );          size += strlen (file);
315      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,      if (ext && *ext)
316                           OPEN_ALWAYS, 0, NULL );          size += strlen (ext);
317      if( ctx->fh == INVALID_HANDLE_VALUE )      p = new char[size + 4];
318          return WPTERR_GENERAL;      if (!p)
319      if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {          BUG (0);
320          CloseHandle( ctx->fh );      memset (p, 0, size);
321          ctx->fh = INVALID_HANDLE_VALUE;      if (path) {
322          ctx->size = 0;          strcat (p, path);
323          free( ctx->file );          if (path[strlen (path) -1] != '\\')
324          return WPTERR_GENERAL;              strcat (p, "\\");
325      }      }
326      return 0;      if (file != NULL)
327  } /* init_file_lock */          strcat (p, file);
328        if (ext != NULL) {
329            strcat (p, ".");
330  void          strcat (p, ext);
331  release_file_lock( LOCK *ctx )      }
332  {      return p;
333      free_if_alloc( ctx->file );  }
334      ctx->file = NULL;  
335      ctx->size = 0;  
336      CloseHandle( ctx->fh );  /* Generate a file name from a special dirctory. */
337  } /* release_file_lock */  char*
338    make_special_filename (int folder, const char *file, const char *ext)
339    {
340  /* Start a dialog with the exception that before it is checked that the      BOOL ec;
341     dialog is not already openened. */      char path[MAX_PATH], *p;
342  int      size_t n=0;
343  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,  
344                                    LPARAM param, LPCTSTR title, int title_id )      /* MSDN: buf must be at least MAX_PATH=256 bytes */
345  {      ec = SHGetSpecialFolderPath (HWND_DESKTOP, path, folder, TRUE);
346      #ifndef LANG_DE      if (ec != 1) {
347      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )          log_debug ("SHGetSpecialFolderPath() failed\r\n", (int)GetLastError ());
348          return -1;                return NULL;
349      #else      }
350      char strdesc[256];  
351      LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );      n = strlen (path)+1;
352      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )      if (file)
353          return -1;          n += strlen (file)+1;
354      #endif      if (ext)
355                n += strlen (ext)+1;
356      return DialogBoxParam( hinst, name, parent, fnc, param );      p = new char[n+2];
357  } /* dialog_box_param */      if (!p)
358            BUG (0);
359        memset (p, 0, n+2);
360  /* Wrapper for message box which forces the message box into the      strcpy (p, path);    
361     foreground and it is displayed always on top. */      if (file) {
362  int          strcat (p, "\\");
363  msg_box (HWND hwnd, const char *text, const char *title, int mode)          strcat (p, file);
364  {      }
365      mode |= MB_SETFOREGROUND;      if (ext)
366      mode |= MB_TASKMODAL;          strcat (p, ext);
367      mode |= MB_TOPMOST;      return p;
368      return MessageBox(hwnd, text, title, mode);  }
369  }  
370    
371    /* return 0 if the file @fname exists, otherwise >0. */
372  void  int
373  set_active_window( HWND dlg)  file_exist_check (const char *fname)
374  {        {
375      activ_hwnd = dlg;      struct stat st;
376  } /* set_active_window */      if (stat (fname, &st) == -1)
377            return WPTERR_FILE_EXIST;
378  void      return 0;
379  reset_active_window( void )  }
380  {        
381      activ_hwnd = NULL;  
382  } /* reset_active_window */  /* Check if the current folder exists.
383       Return 0 for success. */
384    int
385  static DWORD CALLBACK  dir_exist_check (const char *dir)
386  reminder_thread (void *ctx)  {
387  {      struct stat statbuf;    
388      reminder_ctx_s *c = (reminder_ctx_s *)ctx;      
389        if (stat (dir, &statbuf) == -1)
390      Sleep( c->msecs );          return WPTERR_GENERAL;
391      SetForegroundWindow( activ_hwnd );      if (statbuf.st_mode & _S_IFDIR)
392            return 0;
393      return 0;      return WPTERR_GENERAL;
394  } /* reminder_thread */  }
395    
396    
397  HANDLE  /* Return the file size of the given file @fname. */
398  window_reminder( struct reminder_ctx_s *ctx )  DWORD
399  {  get_file_size (const char *fname)
400      DWORD tid = 0;  {
401            DWORD fsize;
402      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );      HANDLE fh;
403  } /* window_reminder */  
404        fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
405                         NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
406  char*      if (fh == INVALID_HANDLE_VALUE)
407  m_strdup (const char *str)          return 0;
408  {      fsize = GetFileSize (fh, NULL);
409      char * p = new char[strlen (str) + 1];      if (fsize == 0xFFFFFFFF)
410      if (p)          fsize = 0;
411          strcpy (p, str);      CloseHandle (fh);
412      return p;      return fsize;
413  } /* m_strdup */  }
414    
415    
416  /* Center the hwndChild relative to parent.  /* Start a dialog with the exception that before it is checked that the
417     The style param allows to specificy additional styles (like topmost). */     dialog is not already openened. */
418  void  int
419  center_window2 (HWND hwndChild, HWND parent, HWND style)  dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
420  {                        LPARAM param, LPCTSTR title, int title_id)
421      HWND hwndParent;  {
422      RECT rChild, rParent;          if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
423      HDC hdc;          return -1;
424      int wChild, hChild, wParent, hParent;          return DialogBoxParam (hinst, name, parent, fnc, param);
425      int wScreen, hScreen, xNew, yNew;  }
426      int flags = SWP_NOSIZE | SWP_NOZORDER;  
427    
428      hwndParent = parent;  /* Wrapper for message box which forces the message box into the
429      if (hwndParent == NULL)     foreground and it is displayed always on top. */
430          hwndParent = GetDesktopWindow ();  int
431      GetWindowRect (hwndChild, &rChild);      msg_box (HWND hwnd, const char *text, const char *title, int mode)
432      wChild = rChild.right - rChild.left;      {
433      hChild = rChild.bottom - rChild.top;      mode |= MB_SETFOREGROUND;
434        mode |= MB_TASKMODAL;
435      GetWindowRect (hwndParent, &rParent);          mode |= MB_TOPMOST;
436      wParent = rParent.right - rParent.left;          return MessageBox(hwnd, text, title, mode);
437      hParent = rParent.bottom - rParent.top;        }
438        
439      hdc = GetDC (hwndChild);      
440      wScreen = GetDeviceCaps (hdc, HORZRES);      /* Center the hwndChild relative to parent.
441      hScreen = GetDeviceCaps (hdc, VERTRES);         The style param allows to specificy additional styles (like topmost). */
442      ReleaseDC (hwndChild, hdc);        void
443      xNew = rParent.left + ((wParent - wChild) /2);      center_window2 (HWND hwndChild, HWND parent, HWND style)
444      if (xNew < 0)  {    
445          xNew = 0;      HWND hwndParent;
446      else if ((xNew+wChild) > wScreen)      RECT rChild, rParent;    
447          xNew = wScreen - wChild;      HDC hdc;
448      yNew = rParent.top  + ((hParent - hChild) /2);      int wChild, hChild, wParent, hParent;    
449      if (yNew < 0)      int wScreen, hScreen, xNew, yNew;
450          yNew = 0;      int flags = SWP_NOSIZE | SWP_NOZORDER;
451      else if ((yNew+hChild) > hScreen)  
452          yNew = hScreen - hChild;      hwndParent = parent;
453      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)      if (hwndParent == NULL)
454          flags = SWP_NOMOVE | SWP_NOSIZE;          hwndParent = GetDesktopWindow ();
455      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);      GetWindowRect (hwndChild, &rChild);    
456  }      wChild = rChild.right - rChild.left;    
457        hChild = rChild.bottom - rChild.top;
458    
459  /* Center the given hwndChild window with no special style. */      GetWindowRect (hwndParent, &rParent);    
460  void      wParent = rParent.right - rParent.left;    
461  center_window (HWND hwndChild, HWND hwndParent)      hParent = rParent.bottom - rParent.top;      
462  {      
463      center_window2 (hwndChild, hwndParent, NULL);      hdc = GetDC (hwndChild);    
464  }      wScreen = GetDeviceCaps (hdc, HORZRES);    
465        hScreen = GetDeviceCaps (hdc, VERTRES);    
466        ReleaseDC (hwndChild, hdc);      
467        xNew = rParent.left + ((wParent - wChild) /2);    
468        if (xNew < 0)
469            xNew = 0;
470        else if ((xNew+wChild) > wScreen)
471            xNew = wScreen - wChild;
472        yNew = rParent.top  + ((hParent - hChild) /2);
473        if (yNew < 0)
474            yNew = 0;
475        else if ((yNew+hChild) > hScreen)
476            yNew = hScreen - hChild;
477        if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)
478            flags = SWP_NOMOVE | SWP_NOSIZE;
479        SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
480    }
481    
482    
483    /* Center the given hwndChild window with no special style. */
484    void
485    center_window (HWND child, HWND parent)
486    {
487        center_window2 (child, parent, NULL);
488    }
489    
490    
491    /* Retrieve the product verion of the given file @fname.
492       Format: MAJOR.MINOR.PATCH1.PATCH2
493       Return value: 0 on success. */
494    int
495    get_file_version (const char *fname,
496                      WORD *major, WORD *minor, WORD *patch1, WORD *patch2)
497    {
498        VS_FIXEDFILEINFO *inf;
499        char file[MAX_PATH+1] = {0};
500        LPVOID buf, data;
501        DWORD arg;
502        DWORD size;
503        UINT qlen;
504    
505        strncpy (file, fname, MAX_PATH);
506        size = GetFileVersionInfoSize (file, &arg);
507        if (!size)
508            return -1;
509        buf = (LPVOID)new char[size];
510        if (!buf)
511            BUG (NULL);
512        GetFileVersionInfo (file, 0, size, buf);
513    
514        qlen=0;
515        VerQueryValue (buf, "\\", &data, &qlen);
516        if (!qlen) {
517            delete [](char*)buf;
518            return -1;
519        }
520        inf = (VS_FIXEDFILEINFO*)data;
521    
522        if (major)
523            *major = HIWORD (inf->dwProductVersionMS);
524        if (minor)
525            *minor = LOWORD (inf->dwProductVersionMS);
526        if (patch1)
527            *patch1 = HIWORD (inf->dwProductVersionLS);    
528        if (patch2)
529            *patch2 = LOWORD (inf->dwProductVersionLS);
530    
531        delete [](char*)buf;
532        return 0;
533    }
534    
535    
536    /* Return date in a format which complies with the
537       locale user settings. */
538    const char*
539    get_locale_date (long tm_t, char *buf, DWORD buflen)
540    {
541        SYSTEMTIME st;
542        struct tm *ptm;
543    
544        ptm = localtime (&tm_t);
545        memset (&st, 0, sizeof (st));
546        st.wYear = (WORD)ptm->tm_year+1900;
547        st.wMonth = (WORD)ptm->tm_mon+1;
548        st.wDay = (WORD)ptm->tm_mday;
549        if (!GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st,
550                            NULL, buf, buflen))
551            return NULL;
552        return buf;
553    }
554    
555    /* Return the time in a format which complies with the locale user
556       settings. */
557    const char*
558    get_locale_time (long tm_t, char *buf, DWORD buflen)
559    {
560        SYSTEMTIME st;
561        struct tm *ptm;
562    
563        ptm = localtime (&tm_t);
564        memset (&st, 0, sizeof (st));
565        st.wMinute = (WORD)ptm->tm_min;
566        st.wHour = (WORD)ptm->tm_hour;
567        st.wSecond = (WORD)ptm->tm_sec;
568    
569        if (!GetTimeFormat (LOCALE_USER_DEFAULT, TIME_FORCE24HOURFORMAT, &st,
570                            NULL, buf, buflen))
571            return NULL;
572        return buf;
573    }
574    
575    
576    /* Return a combination of date+time which complies to the
577       local user settings. */
578    const char*
579    get_locale_timedate (long tm_t, char *buf, DWORD buflen)
580    {
581        DWORD nleft = buflen;
582    
583        if (!get_locale_date (tm_t, buf, buflen))
584            return NULL;
585        nleft -= strlen (buf)+1;
586        if (nleft < 1)
587            return NULL;
588        strcat (buf, " ");
589        nleft--;
590        if (!get_locale_time (tm_t, buf+strlen (buf), nleft))
591            return NULL;
592        return buf;
593    }
594    
595    
596    /* Generate a temporary file name by using the users
597       temp path and optionally a name @name provided by the caller.
598       Return value: 0 on success. */
599    int
600    get_temp_name (char *buf, DWORD buflen, const char *name)
601    {
602        char tmp[32];
603    
604        
605        if (!name) {
606            _snprintf (tmp, DIM (tmp)-1, "%08lX", GetTickCount ());
607            name = tmp;
608        }
609    
610        /* In the mobile mode we need to use the current directory
611           as the temp path because no files should be stored outside
612           the USB disk drive. */
613    #ifdef WINPT_MOBILE
614        memset (buf, 0, buflen);
615        strncpy (buf, name, buflen-1);
616        return 0;
617    #endif
618    
619        if (!GetTempPath (buflen - strlen (name) -2, buf)) {
620            log_debug ("GetTempPath() failed ec=%d\n", (int)GetLastError ());
621            return -1;
622        }
623    
624        strcat (buf, name);
625        return 0;
626    }
627    
628    
629    void
630    ListBox_AddString_utf8 (HWND lb, const char *txt)
631    {
632        char *utf8_txt;
633    
634        utf8_txt = utf8_to_native (txt);
635        SendMessage (lb, LB_ADDSTRING, 0, (LPARAM)(LPCSTR)(utf8_txt));
636        safe_free (utf8_txt);
637    }
638    
639    
640    void
641    ComboBox_AddString_utf8 (HWND cb, const char *txt)
642    {
643        char *utf8_txt;
644    
645        utf8_txt = utf8_to_native (txt);
646        SendMessage ((cb), CB_ADDSTRING, 0, (LPARAM)(LPCSTR)(utf8_txt));
647        safe_free (utf8_txt);
648    }
649    
650    
651    /* GetDlgItemText replacement with UTF8 support. */
652    int
653    GetDlgItemText_utf8 (HWND dlg, int id, char **r_txt)
654    {
655        int len = GetWindowTextLength (GetDlgItem (dlg, id));
656        char *txt;
657    
658        *r_txt = NULL;
659        if (len < 1)
660            return 0;
661        txt = new char[len+2];
662        if (!txt)
663            BUG (NULL);
664        GetDlgItemText (dlg, id, txt, len+1);
665        *r_txt = native_to_utf8 (txt);
666        free_if_alloc (txt);
667        return len;
668    }
669    
670    
671    /* Return TRUE if the current user has admin privileges. */
672    BOOL
673    user_is_admin (void)
674    {
675        SID_IDENTIFIER_AUTHORITY SystemSidAuthority = SECURITY_NT_AUTHORITY;
676        HANDLE hd;
677        TOKEN_GROUPS  *ptg = NULL;
678        DWORD ngtoken;
679        DWORD i;
680        BOOL admin = FALSE;
681        PSID psid = 0;
682    
683        if (GetVersion () & 0x80000000) /* Win9X */
684            return TRUE;
685    
686        if (!OpenThreadToken (GetCurrentThread (), TOKEN_QUERY, FALSE, &hd) &&
687            !OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &hd))
688            return FALSE;
689        
690        if (!GetTokenInformation (hd, TokenGroups, NULL, 0, &ngtoken) &&
691            GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
692            ptg = (TOKEN_GROUPS*)GlobalAlloc (GPTR, ngtoken);
693            if (!ptg)
694                return FALSE;
695    
696            if (!GetTokenInformation (hd, TokenGroups,
697                                      ptg, ngtoken, &ngtoken)) {
698                GlobalFree (ptg);
699                return FALSE;
700            }
701            AllocateAndInitializeSid (&SystemSidAuthority,
702                                      2, SECURITY_BUILTIN_DOMAIN_RID,
703                                      DOMAIN_ALIAS_RID_ADMINS,
704                                      0, 0, 0, 0, 0, 0,
705                                      &psid);
706            for (i = 0; i < ptg->GroupCount; i++) {
707                if (EqualSid (ptg->Groups[i].Sid, psid)) {
708                    admin = TRUE;
709                    break;
710                }
711            }
712            FreeSid (psid);
713            GlobalFree (ptg);
714        }
715    
716        CloseHandle (hd);
717        return admin;
718    }
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