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