/[winpt]/trunk/Src/wptW32API.cpp
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revision 23 by twoaday, Fri Sep 30 10:10:16 2005 UTC revision 205 by twoaday, Thu Apr 27 12:46:03 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  extern "C" void _SHFree (void *p);  #include "wptErrors.h"
37    #include "wptVersion.h"
38  /* The the text of a menu item. */  #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  /* Use the common dialog to request a file from the user.  }
75     id can be either FILE_OPEN or FILE_SAVE.  
76     The return value is the file name or NULL if cancel was chosen. */  
77  const char *  /* Set the text of a menu item @m_uid to @text. */
78  get_filename_dlg (HWND hwnd, int id, const char * title,  void
79                    const char * filter, const char * name)  set_menu_text (HMENU menu, UINT m_uid, const char *text)
80  {  {
81      static char file[512] = "";      set_menu_text_ext (menu, 0, m_uid, text);
82      OPENFILENAME open;  }
83        
84      if (name && strlen (name) < (sizeof (file)-1))  
85          strcpy (file, name);  /* Set the text of a menu item with the position @pos to @text. */
86      else  void
87          memset (file, 0, sizeof (file));  set_menu_text_bypos (HMENU menu, UINT pos, const char *text)
88      if (!filter)  {
89          filter = _("All Files (*.*)\0*.*\0\0");      set_menu_text_ext (menu, 1, pos, text);
90      memset (&open, 0, sizeof (open));  }
91      open.lStructSize = sizeof (OPENFILENAME);  
92      open.hInstance = glob_hinst;  
93      open.lpstrTitle = title;  /* Set the state of a menu item @m_uid to @state. */
94      open.lpstrFilter = filter;  void
95      open.hwndOwner = hwnd;  set_menu_state (HMENU menu, UINT m_uid, UINT state)
96      open.lpstrFile = file;  {      
97      open.nMaxFile = sizeof (file) - 1;      MENUITEMINFO mii;
98      if (id == FILE_OPEN)  
99          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;      memset (&mii, 0, sizeof (mii));
100      else      mii.cbSize = sizeof (mii);
101          open.Flags = OFN_OVERWRITEPROMPT;      mii.fMask = MIIM_STATE;
102        mii.fState = state;
103      if (id == FILE_OPEN && GetOpenFileName (&open))      SetMenuItemInfo (menu, m_uid, FALSE, &mii);
104          return open.lpstrFile;  }
105      else if (id == FILE_SAVE && GetSaveFileName (&open))  
106          return open.lpstrFile;  
107        /* Retrieve the state of the menu item @m_uid and return it. */
108      return NULL;  UINT
109  }  get_menu_state (HMENU menu, UINT m_uid)
110    {
111  /* Use the common dialog to allow the user to select a folder.      MENUITEMINFO mii;
112     The return value is either the folder path or NULL if cancel was chosen. */  
113  const char*      memset (&mii, 0, sizeof (mii));
114  get_folder_dlg (HWND hwnd, const char * title, const char * name)      mii.cbSize = sizeof (mii);
115  {      mii.fMask = MIIM_STATE;
116      static char folder[MAX_PATH+1] = "";      GetMenuItemInfo (menu, m_uid, FALSE, &mii);
117      BROWSEINFO bi;      return mii.fState;
118      ITEMIDLIST * il;  }
119    
120      memset (&bi, 0, sizeof (bi));  
121      bi.hwndOwner = hwnd;  enum {
122      if (title)      CDLG_FILE_OPEN = 0,
123          bi.lpszTitle = title;      CDLG_FILE_SAVE = 1
124      if (name && strlen (name) < MAX_PATH-1)  };
125          strcpy (folder, name);  
126      else  /* Use the common dialog to request a file from the user.
127          memset (folder, 0, sizeof (folder));     id can be either FILE_OPEN or FILE_SAVE.
128      il = SHBrowseForFolder (&bi);     The return value is the file name or NULL if cancel was chosen. */
129      if (il) {  const char *
130          SHGetPathFromIDList (il, folder);  get_filename_dlg (HWND hwnd, int id, const char *title,
131          _SHFree (il);                    const char *filter, const char *name)
132          return folder;  {
133      }      static char file[512] = "";
134      return NULL;      OPENFILENAME open;
135  }      
136        if (name && strlen (name) < (sizeof (file)-1))
137            strcpy (file, name);
138  /* Return the clipboard contents as a string or NULL      else
139     if the clipboard does not contain text. */          memset (file, 0, sizeof (file));
140  char*      if (!filter)
141  get_clip_text (HWND hwnd)          filter = "All Files (*.*)\0*.*\0\0";
142  {      /* XXX: problem with gettext because of the 'artificial'
143      HANDLE clipmem;              double string termination!. */
144      char *cliptxt, *p;        memset (&open, 0, sizeof (open));
145      int len;      open.lStructSize = sizeof (OPENFILENAME);
146            open.hInstance = glob_hinst;
147      if (OpenClipboard (hwnd) == FALSE)      open.lpstrTitle = title;
148          return NULL;      open.lpstrFilter = filter;
149      clipmem = GetClipboardData (CF_TEXT);      open.hwndOwner = hwnd;
150      if (clipmem == NULL) {      open.lpstrFile = file;
151          p = NULL;      open.nMaxFile = sizeof (file) - 1;
152          goto leave;      if (id == CDLG_FILE_OPEN)
153      }          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
154      cliptxt = (char *) GlobalLock (clipmem);      else
155      if (cliptxt == NULL) {          open.Flags = OFN_OVERWRITEPROMPT;
156          p = NULL;  
157          goto leave;      if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
158      }          return open.lpstrFile;
159            else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
160      len =  strlen (cliptxt);          return open.lpstrFile;
161      p = new char[len + 1];      
162      if (!p)      return NULL;
163          BUG (NULL);  }
164      memcpy (p, cliptxt, len);  
165      p[len] = '\0';  const char*
166      GlobalUnlock (clipmem);  get_filesave_dlg (HWND hwnd, const char *title,
167                          const char *filter, const char *name)
168  leave:  {
169      CloseClipboard ();      return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
170      return p;  }
171  }  
172    const char*
173    get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
174  /* Set the the given text to the clipboard. */                    const char *name)
175  int  {
176  set_clip_text (HWND hwnd, const char *text, int nbytes)      return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
177  {      }
178      HANDLE clipmem;  
179      int rc = 0;  
180      char *p;  /* Use the common dialog to allow the user to select a folder.
181           The return value is either the folder path or NULL if cancel was chosen. */
182      if (OpenClipboard (hwnd) == FALSE)    const char*
183          return WPTERR_CLIP_OPEN;  get_folder_dlg (HWND hwnd, const char *title, const char *name)
184      EmptyClipboard ();  {
185        static char folder[MAX_PATH+1] = "";
186      clipmem = GlobalAlloc (GHND, nbytes + 1);      BROWSEINFO bi;
187      if (clipmem == NULL)      ITEMIDLIST *il;
188          BUG (NULL);  
189      p = (char *) GlobalLock (clipmem);      memset (&bi, 0, sizeof (bi));
190      if (p == NULL) {      bi.hwndOwner = hwnd;
191          rc = WPTERR_GENERAL;;      if (title)
192          goto leave;              bi.lpszTitle = title;
193      }      if (name && strlen (name) < MAX_PATH-1)
194      memcpy (p, text, nbytes);          strcpy (folder, name);
195      p[nbytes] = '\0';      else
196                memset (folder, 0, sizeof (folder));
197      GlobalUnlock (clipmem);      il = SHBrowseForFolder (&bi);
198      SetClipboardData (CF_TEXT, clipmem);      if (il) {
199                SHGetPathFromIDList (il, folder);
200  leave:          _SHFree (il);
201      CloseClipboard ();          return folder;
202      return rc;      }
203  } /* set_clip_text */      return NULL;
204    }
205    
206  /* Append or prepend some text to the clipboard contents.  
207     If as_footer = 1, append the text otherwise prepend. */  /* Return the clipboard contents as a string or NULL
208  int     if the clipboard does not contain text. */
209  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)  char*
210  {  get_clip_text (HWND hwnd)
211      char *p, *new_text;  {
212        HANDLE clipmem;
213      p = get_clip_text (hwnd);      char *cliptxt, *p;  
214      if (!p)      int len;
215          return WPTERR_CLIP_GET;      
216      new_text = new char [strlen (p)+strlen (text)+8];      if (OpenClipboard (hwnd) == FALSE)
217      if (!new_text)          return NULL;
218          BUG (0);      clipmem = GetClipboardData (CF_TEXT);
219      if (as_footer == 0)      if (clipmem == NULL) {
220          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);          p = NULL;
221      else          goto leave;
222          sprintf (new_text, "%s\n%s\n\n", p, text);      }
223      set_clip_text (hwnd, new_text, strlen (new_text)+1);      cliptxt = (char *) GlobalLock (clipmem);
224      free_if_alloc (p);      if (cliptxt == NULL) {
225      free_if_alloc (new_text);          p = NULL;
226      return 0;          goto leave;
227  }      }
228        
229        len =  strlen (cliptxt);
230  /* Make a file name out of the path, the file and an extension. */      p = new char[len + 1];
231  char*      if (!p)
232  make_filename (const char *path, const char *file, const char *ext)          BUG (NULL);
233  {      memcpy (p, cliptxt, len);
234      char *p;      p[len] = '\0';
235      size_t size = 0;      GlobalUnlock (clipmem);
236        
237      if( path && *path )  leave:
238          size += strlen( path );      CloseClipboard ();
239      if( file && *file )      return p;
240          size += strlen( file );  }
241      if( ext && *ext )  
242          size += strlen( ext );  
243      p = new char[size + 4];  /* Set @text as the new clipboard content. */
244      memset( p, 0, size );  int
245      if( path ) {  set_clip_text (HWND hwnd, const char *text, int nbytes)
246          strcat( p, path );  {    
247          if( path[strlen( path ) -1] != '\\' )      HANDLE clipmem;
248              strcat( p, "\\" );      int rc = 0;
249      }      char *p;
250      if( file )      
251          strcat( p, file );      if (OpenClipboard (hwnd) == FALSE)  
252      if( ext ) {          return WPTERR_CLIP_OPEN;
253          strcat( p, "." );      EmptyClipboard ();
254          strcat( p, ext );  
255      }      clipmem = GlobalAlloc (GHND, nbytes + 1);
256      return p;      if (clipmem == NULL)
257  } /* make_filename */          BUG (NULL);
258        p = (char *) GlobalLock (clipmem);
259        if (p == NULL) {
260  /* return 0 if it exists, otherwise >0. */          CloseClipboard ();
261  int          GlobalFree (clipmem);
262  file_exist_check (const char * fname)          return WPTERR_GENERAL;
263  {            }
264      HANDLE fh;        memcpy (p, text, nbytes);
265        p[nbytes] = '\0';
266      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,      
267                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );      SetClipboardData (CF_TEXT, clipmem);
268      if( fh == INVALID_HANDLE_VALUE )      GlobalUnlock (clipmem);
269          return WPTERR_FILE_EXIST;      CloseClipboard ();
270      CloseHandle( fh );      GlobalFree (clipmem);
271      return 0;      
272  }      return rc;
273    }
274    
275  /* Check if the current folder exists.  
276     Return 0 for success. */  /* Append or prepend some text to the clipboard contents.
277  int     If as_footer = 1, append the text otherwise prepend. */
278  dir_exist_check (const char *dir)  int
279  {  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
280      struct stat statbuf;      {
281            char *p, *new_text;
282      if( stat( dir, &statbuf ) == -1 )  
283          return WPTERR_GENERAL;      p = get_clip_text (hwnd);
284      if( statbuf.st_mode & _S_IFDIR )      if (!p)
285          return 0;          return WPTERR_CLIP_GET;
286      return WPTERR_GENERAL;      new_text = new char [strlen (p)+strlen (text)+8];
287  }      if (!new_text)
288            BUG (0);
289        if (as_footer == 0)
290  /* Return the file size of the given file. */          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);
291  size_t      else
292  get_file_size (const char *fname)          sprintf (new_text, "%s\n%s\n\n", p, text);
293  {      set_clip_text (hwnd, new_text, strlen (new_text)+1);
294      size_t fsize;      free_if_alloc (p);
295      HANDLE fh;      free_if_alloc (new_text);
296        return 0;
297      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,  }
298                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );  
299      if( fh == INVALID_HANDLE_VALUE )  
300          return 0;  /* Make a file name out of the path @path, the file @file and
301      fsize = GetFileSize( fh, NULL );     an extension. @ext.
302      if( fsize == 0xFFFFFFFF )     Return value: the full file name on success. */
303          fsize = 0;  char*
304      CloseHandle( fh );  make_filename (const char *path, const char *file, const char *ext)
305      return fsize;  {
306  } /* get_file_size */      char *p;
307        size_t size = 0;
308    
309  int      if( path && *path )
310  init_file_lock( LOCK *ctx, const char *file )          size += strlen( path );
311  {      if( file && *file )
312                size += strlen( file );
313      ctx->size = get_file_size( file );      if( ext && *ext )
314      ctx->file = m_strdup( file );          size += strlen( ext );
315      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,      p = new char[size + 4];
316                           OPEN_ALWAYS, 0, NULL );      memset( p, 0, size );
317      if( ctx->fh == INVALID_HANDLE_VALUE )      if( path ) {
318          return WPTERR_GENERAL;          strcat( p, path );
319      if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {          if( path[strlen( path ) -1] != '\\' )
320          CloseHandle( ctx->fh );              strcat( p, "\\" );
321          ctx->fh = INVALID_HANDLE_VALUE;      }
322          ctx->size = 0;      if( file )
323          free( ctx->file );          strcat( p, file );
324          return WPTERR_GENERAL;      if( ext ) {
325      }          strcat( p, "." );
326      return 0;          strcat( p, ext );
327  } /* init_file_lock */      }
328        return p;
329    }
330  void  
331  release_file_lock( LOCK *ctx )  
332  {  /* Generate a file name from a special dirctory. */
333      free_if_alloc( ctx->file );  char*
334      ctx->file = NULL;  make_special_filename (int folder, const char *file, const char *ext)
335      ctx->size = 0;  {
336      CloseHandle( ctx->fh );      BOOL ec;
337  } /* release_file_lock */      char path[MAX_PATH], *p;
338        size_t n=0;
339    
340  /* Start a dialog with the exception that before it is checked that the      /* MSDN: buf must be at least MAX_PATH=256 bytes */
341     dialog is not already openened. */      ec = SHGetSpecialFolderPath (HWND_DESKTOP, path, folder, TRUE);
342  int      if (ec != 1) {
343  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,          log_debug ("SHGetSpecialFolderPath() failed\r\n", (int)GetLastError ());
344                                    LPARAM param, LPCTSTR title, int title_id )          return NULL;
345  {      }
346      #ifndef LANG_DE  
347      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )      n = strlen (path)+1;
348          return -1;            if (file)
349      #else          n += strlen (file)+1;
350      char strdesc[256];      if (ext)
351      LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );          n += strlen (ext)+1;
352      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )      p = new char[n+2];
353          return -1;      if (!p)
354      #endif          BUG (0);
355            memset (p, 0, n+2);
356      return DialogBoxParam( hinst, name, parent, fnc, param );      strcpy (p, path);    
357  } /* dialog_box_param */      if (file) {
358            strcat (p, "\\");
359            strcat (p, file);
360  /* Wrapper for message box which forces the message box into the      }
361     foreground and it is displayed always on top. */      if (ext)
362  int          strcat (p, ext);
363  msg_box (HWND hwnd, const char *text, const char *title, int mode)      return p;
364  {  }
365      mode |= MB_SETFOREGROUND;  
366      mode |= MB_TASKMODAL;  
367      mode |= MB_TOPMOST;  /* return 0 if the file @fname exists, otherwise >0. */
368      return MessageBox(hwnd, text, title, mode);  int
369  }  file_exist_check (const char *fname)
370    {
371        struct stat st;
372  void      if (stat (fname, &st) == -1)
373  set_active_window( HWND dlg)          return WPTERR_FILE_EXIST;
374  {            return 0;
375      activ_hwnd = dlg;  }
376  } /* set_active_window */  
377    
378  void  /* Check if the current folder exists.
379  reset_active_window( void )     Return 0 for success. */
380  {        int
381      activ_hwnd = NULL;  dir_exist_check (const char *dir)
382  } /* reset_active_window */  {
383        struct stat statbuf;    
384        
385  static DWORD CALLBACK      if (stat (dir, &statbuf) == -1)
386  reminder_thread (void *ctx)          return WPTERR_GENERAL;
387  {      if (statbuf.st_mode & _S_IFDIR)
388      reminder_ctx_s *c = (reminder_ctx_s *)ctx;          return 0;
389        return WPTERR_GENERAL;
390      Sleep( c->msecs );  }
391      SetForegroundWindow( activ_hwnd );  
392    
393      return 0;  /* Return the file size of the given file @fname. */
394  } /* reminder_thread */  DWORD
395    get_file_size (const char *fname)
396    {
397  HANDLE      DWORD fsize;
398  window_reminder( struct reminder_ctx_s *ctx )      HANDLE fh;
399  {  
400      DWORD tid = 0;      fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
401                             NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
402      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );      if (fh == INVALID_HANDLE_VALUE)
403  } /* window_reminder */          return 0;
404        fsize = GetFileSize (fh, NULL);
405        if (fsize == 0xFFFFFFFF)
406  char*          fsize = 0;
407  m_strdup (const char *str)      CloseHandle (fh);
408  {      return fsize;
409      char * p = new char[strlen (str) + 1];  }
410      if (p)  
411          strcpy (p, str);  
412      return p;  /* Start a dialog with the exception that before it is checked that the
413  } /* m_strdup */     dialog is not already openened. */
414    int
415    dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
416  /* Center the hwndChild relative to parent.                    LPARAM param, LPCTSTR title, int title_id)
417     The style param allows to specificy additional styles (like topmost). */  {
418  void      if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
419  center_window2 (HWND hwndChild, HWND parent, HWND style)          return -1;
420  {          return DialogBoxParam (hinst, name, parent, fnc, param);
421      HWND hwndParent;  }
422      RECT rChild, rParent;      
423      HDC hdc;  
424      int wChild, hChild, wParent, hParent;      /* Wrapper for message box which forces the message box into the
425      int wScreen, hScreen, xNew, yNew;     foreground and it is displayed always on top. */
426      int flags = SWP_NOSIZE | SWP_NOZORDER;  int
427    msg_box (HWND hwnd, const char *text, const char *title, int mode)
428      hwndParent = parent;  {
429      if (hwndParent == NULL)      mode |= MB_SETFOREGROUND;
430          hwndParent = GetDesktopWindow ();      mode |= MB_TASKMODAL;
431      GetWindowRect (hwndChild, &rChild);          mode |= MB_TOPMOST;
432      wChild = rChild.right - rChild.left;          return MessageBox(hwnd, text, title, mode);
433      hChild = rChild.bottom - rChild.top;  }
434    
435      GetWindowRect (hwndParent, &rParent);      
436      wParent = rParent.right - rParent.left;      /* Safe strdup version (C++ version). */
437      hParent = rParent.bottom - rParent.top;        char*
438        m_strdup (const char *str)
439      hdc = GetDC (hwndChild);      {
440      wScreen = GetDeviceCaps (hdc, HORZRES);          char *p = new char[strlen (str) + 1];
441      hScreen = GetDeviceCaps (hdc, VERTRES);          if (!p)
442      ReleaseDC (hwndChild, hdc);                BUG (NULL);
443      xNew = rParent.left + ((wParent - wChild) /2);          strcpy (p, str);
444      if (xNew < 0)      return p;
445          xNew = 0;  }
446      else if ((xNew+wChild) > wScreen)  
447          xNew = wScreen - wChild;  
448      yNew = rParent.top  + ((hParent - hChild) /2);  /* Center the hwndChild relative to parent.
449      if (yNew < 0)     The style param allows to specificy additional styles (like topmost). */
450          yNew = 0;  void
451      else if ((yNew+hChild) > hScreen)  center_window2 (HWND hwndChild, HWND parent, HWND style)
452          yNew = hScreen - hChild;  {    
453      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)      HWND hwndParent;
454          flags = SWP_NOMOVE | SWP_NOSIZE;      RECT rChild, rParent;    
455      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);      HDC hdc;
456  }      int wChild, hChild, wParent, hParent;    
457        int wScreen, hScreen, xNew, yNew;
458        int flags = SWP_NOSIZE | SWP_NOZORDER;
459  /* Center the given hwndChild window with no special style. */  
460  void      hwndParent = parent;
461  center_window (HWND hwndChild, HWND hwndParent)      if (hwndParent == NULL)
462  {          hwndParent = GetDesktopWindow ();
463      center_window2 (hwndChild, hwndParent, NULL);      GetWindowRect (hwndChild, &rChild);    
464  }      wChild = rChild.right - rChild.left;    
465        hChild = rChild.bottom - rChild.top;
466    
467        GetWindowRect (hwndParent, &rParent);    
468        wParent = rParent.right - rParent.left;    
469        hParent = rParent.bottom - rParent.top;      
470        
471        hdc = GetDC (hwndChild);    
472        wScreen = GetDeviceCaps (hdc, HORZRES);    
473        hScreen = GetDeviceCaps (hdc, VERTRES);    
474        ReleaseDC (hwndChild, hdc);      
475        xNew = rParent.left + ((wParent - wChild) /2);    
476        if (xNew < 0)
477            xNew = 0;
478        else if ((xNew+wChild) > wScreen)
479            xNew = wScreen - wChild;
480        yNew = rParent.top  + ((hParent - hChild) /2);
481        if (yNew < 0)
482            yNew = 0;
483        else if ((yNew+hChild) > hScreen)
484            yNew = hScreen - hChild;
485        if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)
486            flags = SWP_NOMOVE | SWP_NOSIZE;
487        SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
488    }
489    
490    
491    /* Center the given hwndChild window with no special style. */
492    void
493    center_window (HWND hwndChild, HWND hwndParent)
494    {
495        center_window2 (hwndChild, hwndParent, NULL);
496    }
497    
498    
499    /* Retrieve the product verion of the given file @fname.
500       Format: MAJOR.MINOR.PATCH1.PATCH2
501       Return value: 0 on success. */
502    int
503    get_file_version (const char *fname, WORD *major, WORD *minor,
504                      WORD *patch1, WORD *patch2)
505    {
506        VS_FIXEDFILEINFO *inf = {0};
507        char file[MAX_PATH+1] = {0};
508        LPVOID buf, data;
509        DWORD arg;
510        DWORD size;
511        UINT qlen;
512    
513        strncpy (file, fname, MAX_PATH);
514        size = GetFileVersionInfoSize (file, &arg);
515        if (!size)
516            return -1;
517        buf = (LPVOID)new CHAR[size];
518        if (!buf)
519            BUG (NULL);
520        GetFileVersionInfo (file, 0, size, buf);
521    
522        qlen=0;
523        VerQueryValue (buf, "\\", &data, &qlen);
524        if (!qlen) {
525            delete [] (char*)buf;
526            return -1;
527        }
528        inf = (VS_FIXEDFILEINFO*)data;
529    
530        if (major)
531            *major = HIWORD (inf->dwProductVersionMS);
532        if (minor)
533            *minor = LOWORD (inf->dwProductVersionMS);
534        if (patch1)
535            *patch1 = HIWORD (inf->dwProductVersionLS);    
536        if (patch2)
537            *patch2 = LOWORD (inf->dwProductVersionLS);
538    
539        delete [] (char*)buf;
540        return 0;
541    }
542    
543    
544    /* Return date in a format which complies with the
545       system locale settings. */
546    const char*
547    get_locale_date (long tm_t, char *buf, DWORD buflen)
548    {
549        SYSTEMTIME st;
550        struct tm *ptm;
551    
552        ptm = localtime (&tm_t);  
553        st.wYear = (WORD)ptm->tm_year;
554        st.wMonth = (WORD)ptm->tm_mon;
555        st.wDay = (WORD)ptm->tm_mday;
556        st.wYear += 1900;
557        st.wMonth += 1;
558        if (!GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st,
559                            NULL, buf, buflen))
560            return NULL;
561        return buf;
562    }
563    
564    
565    /* Generate a temporary file name by using the users
566       temp path and optionally a name @name provided by the caller.
567       Return value: 0 on success. */
568    int
569    get_temp_name (char *buf, DWORD buflen, const char *name)
570    {
571        char tmp[32];
572    
573        if (!name) {
574            sprintf (tmp, "%08lX", GetTickCount ());
575            name = tmp;
576        }
577    
578        /* in the mobile mode we use a local temp folder
579           with the fixed name 'temp'. */
580        if (mobile_mode_active) {
581            _snprintf (buf, buflen-1, "temp\\%s", name);
582            return 0;
583        }
584    
585        if (!GetTempPath (buflen - strlen (name) -2, buf)) {
586            log_debug ("GetTempPath() failed ec=%d\n", (int)GetLastError ());
587            return -1;
588        }
589        strcat (buf, name);
590        return 0;
591    }
592    
593    
594    void
595    ListBox_AddString_utf8 (HWND lb, const char *txt)
596    {
597        char *utf8_txt;
598    
599        utf8_txt = utf8_to_native (txt);
600        SendMessage (lb, LB_ADDSTRING, 0, (LPARAM)(LPCSTR)(utf8_txt));
601        safe_free (utf8_txt);
602    }
603    
604    
605    void
606    ComboBox_AddString_utf8 (HWND cb, const char *txt)
607    {
608    
609        char *utf8_txt;
610    
611        utf8_txt = utf8_to_native (txt);
612        SendMessage ((cb), CB_ADDSTRING, 0, (LPARAM)(LPCSTR)(utf8_txt));
613        safe_free (utf8_txt);
614    }
615    
616    
617    /* GetDlgItemText replacement with UTF8 support. */
618    int
619    GetDlgItemText_utf8 (HWND dlg, int id, char **r_txt)
620    {
621        int len = GetWindowTextLength (GetDlgItem (dlg, id));
622        char *txt;
623    
624        *r_txt = NULL;
625        if (len < 1)
626            return 0;
627        txt = new char[len+2];
628        if (!txt)
629            BUG (NULL);
630        GetDlgItemText (dlg, id, txt, len+1);
631        *r_txt = native_to_utf8 (txt);
632        free_if_alloc (txt);
633        return len;
634    }
635    
636    
637    struct reminder_hd_s {
638        int msecs;
639        HWND dlg;
640        HANDLE hd;
641    };
642    
643    
644    static DWORD CALLBACK
645    foreground_reminder_thread (void *c)
646    {
647        struct reminder_hd_s *ctx = (struct reminder_hd_s *)c;
648        Sleep (ctx->msecs);
649        SetForegroundWindow (ctx->dlg);
650        CloseHandle (ctx->hd);
651        delete ctx;
652        ExitThread (0);
653        return 0;
654    }
655    
656    /* Try to force the window @dlg to the foreground.
657       On NT5 or later this will not work if the user
658       is working in another window (console for example). */
659    void
660    force_foreground_window (HWND dlg, int msecs)
661    {
662        struct reminder_hd_s *hd;
663        DWORD tid;
664    
665        hd = new reminder_hd_s;
666        hd->dlg = dlg;
667        hd->msecs = msecs;
668        hd->hd = CreateThread (NULL, 0, foreground_reminder_thread,
669                               hd, NULL, &tid);
670    }
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