/[winpt]/trunk/Src/wptW32API.cpp
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revision 22 by twoaday, Wed Aug 10 11:33:35 2005 UTC revision 137 by twoaday, Mon Jan 9 14:01:51 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  /*  #include "wptTypes.h"
39   * The the text of a menu item.  
40   */  
41  void  extern "C" void _SHFree (void *p);
42  set_menu_text (HMENU menu, int m_uid, const char *text)  
43  {  
44      MENUITEMINFO mii;  static void
45      char menu_text[80];  set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
46        {
47      memset (&mii, 0, sizeof (mii));      MENUITEMINFO mii;
48      mii.cbSize = sizeof (mii);      
49      mii.fMask = MIIM_TYPE;      memset (&mii, 0, sizeof mii);
50      mii.dwTypeData = menu_text;      mii.cbSize = sizeof mii;
51      mii.cch = sizeof (menu_text);      mii.fMask = MIIM_TYPE;
52      GetMenuItemInfo (menu, m_uid, FALSE, &mii);      mii.fType = MFT_STRING;
53            mii.dwTypeData = (char *) text;
54      memset (&mii, 0, sizeof mii);      SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
55      mii.cbSize = sizeof mii;  }
56      mii.fMask = MIIM_TYPE;  
57      mii.fType = MFT_STRING;  
58      mii.dwTypeData = (char *) text;  /* Set the text of a menu item @m_uid to @text. */
59      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  void
60  } /* set_menu_text */  set_menu_text (HMENU menu, UINT m_uid, const char *text)
61    {
62        set_menu_text_ext (menu, 0, m_uid, text);
63  void  }
64  set_menu_state (HMENU menu, int m_uid, int state)  
65  {        
66      MENUITEMINFO mii;  /* Set the text of a menu item with the position @pos to @text. */
67    void
68      memset( &mii, 0, sizeof (mii) );  set_menu_text_bypos (HMENU menu, UINT pos, const char *text)
69      mii.cbSize = sizeof (mii);  {
70      mii.fMask = MIIM_STATE;      set_menu_text_ext (menu, 1, pos, text);
71      mii.fState = state;  }
72      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  
73  } /* set_menu_state */  
74    /* Set the state of a menu item @m_uid to @state. */
75    void
76    set_menu_state (HMENU menu, UINT m_uid, UINT state)
77  const char *  {      
78  get_filename_dlg (HWND hwnd, int id, const char * title,      MENUITEMINFO mii;
79                    const char * filter, const char * name)  
80  {      memset (&mii, 0, sizeof (mii));
81      static char file[512] = "";      mii.cbSize = sizeof (mii);
82      OPENFILENAME open;      mii.fMask = MIIM_STATE;
83            mii.fState = state;
84      if (name && strlen (name) < (sizeof (file)-1))      SetMenuItemInfo (menu, m_uid, FALSE, &mii);
85          strcpy (file, name);  }
86      else  
87          memset (file, 0, sizeof (file));  
88      if (!filter)  /* Retrieve the state of the menu item @m_uid and return it. */
89          filter = _("All Files (*.*)\0*.*");  UINT
90      memset (&open, 0, sizeof (open));  get_menu_state (HMENU menu, UINT m_uid)
91      open.lStructSize = sizeof (OPENFILENAME);  {
92      open.hInstance = glob_hinst;      MENUITEMINFO mii;
93      open.lpstrTitle = title;  
94      open.lpstrFilter = filter;      memset (&mii, 0, sizeof (mii));
95      open.hwndOwner = hwnd;      mii.cbSize = sizeof (mii);
96      open.lpstrFile = file;      mii.fMask = MIIM_STATE;
97      open.nMaxFile = sizeof (file) - 1;      GetMenuItemInfo (menu, m_uid, FALSE, &mii);
98      open.Flags = 0;      return mii.fState;
99    }
100      if (id == 0 && GetOpenFileName (&open))  
101          return open.lpstrFile;  
102      else if (id == 1 && GetSaveFileName (&open))  enum {
103          return open.lpstrFile;      CDLG_FILE_OPEN = 0,
104            CDLG_FILE_SAVE = 1
105      return NULL;  };
106  } /* get_filename_dlg */  
107    /* Use the common dialog to request a file from the user.
108       id can be either FILE_OPEN or FILE_SAVE.
109  const char *     The return value is the file name or NULL if cancel was chosen. */
110  get_folder_dlg (HWND hwnd, const char * title, const char * name)  const char *
111  {  get_filename_dlg (HWND hwnd, int id, const char * title,
112      static char folder[MAX_PATH] = "";                    const char * filter, const char * name)
113      BROWSEINFO bi;  {
114      ITEMIDLIST * il;      static char file[512] = "";
115        OPENFILENAME open;
116      memset (&bi, 0, sizeof (bi));      
117      bi.hwndOwner = hwnd;      if (name && strlen (name) < (sizeof (file)-1))
118      if (title)          strcpy (file, name);
119          bi.lpszTitle = title;      else
120      if (name && strlen (name) < MAX_PATH-1)          memset (file, 0, sizeof (file));
121          strcpy (folder, name);      if (!filter)
122      else          filter = _("All Files (*.*)\0*.*\0\0");
123          memset (folder, 0, sizeof (folder));      /* XXX: problem with gettext because of the 'artificial'
124      il = SHBrowseForFolder (&bi);              double string termination!. */
125      if (il) {      memset (&open, 0, sizeof (open));
126          SHGetPathFromIDList (il, folder);      open.lStructSize = sizeof (OPENFILENAME);
127          _SHFree (il);      open.hInstance = glob_hinst;
128          return folder;      open.lpstrTitle = title;
129      }      open.lpstrFilter = filter;
130      return NULL;      open.hwndOwner = hwnd;
131  }      open.lpstrFile = file;
132        open.nMaxFile = sizeof (file) - 1;
133        if (id == CDLG_FILE_OPEN)
134  char*          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
135  get_clip_text (HWND hwnd)      else
136  {          open.Flags = OFN_OVERWRITEPROMPT;
137      HANDLE clipmem;  
138      char *cliptxt, *p;        if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
139      int len;          return open.lpstrFile;
140            else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
141      if (OpenClipboard (hwnd) == FALSE)          return open.lpstrFile;
142          return NULL;      
143      clipmem = GetClipboardData (CF_TEXT);      return NULL;
144      if (clipmem == NULL) {  }
145          p = NULL;  
146          goto leave;  const char*
147      }  get_filesave_dlg (HWND hwnd, const char *title,
148      cliptxt = (char *) GlobalLock (clipmem);                    const char *filter, const char *name)
149      if (cliptxt == NULL) {  {
150          p = NULL;      return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
151          goto leave;  }
152      }  
153        const char*
154      len =  strlen (cliptxt);  get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
155      p = new char[len + 1];                    const char *name)
156      if (!p)  {
157          BUG (NULL);      return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
158      memcpy (p, cliptxt, len);  }
159      p[len] = '\0';  
160      GlobalUnlock (clipmem);  
161        /* Use the common dialog to allow the user to select a folder.
162  leave:     The return value is either the folder path or NULL if cancel was chosen. */
163      CloseClipboard ();  const char*
164      return p;  get_folder_dlg (HWND hwnd, const char *title, const char *name)
165  } /* get_clip_text */  {
166        static char folder[MAX_PATH+1] = "";
167        BROWSEINFO bi;
168  int      ITEMIDLIST *il;
169  set_clip_text (HWND hwnd, const char *text, int nbytes)  
170  {          memset (&bi, 0, sizeof (bi));
171      HANDLE clipmem;      bi.hwndOwner = hwnd;
172      int rc = 0;      if (title)
173      char *p;          bi.lpszTitle = title;
174            if (name && strlen (name) < MAX_PATH-1)
175      if (OpenClipboard (hwnd) == FALSE)            strcpy (folder, name);
176          return WPTERR_CLIP_OPEN;      else
177      EmptyClipboard ();          memset (folder, 0, sizeof (folder));
178        il = SHBrowseForFolder (&bi);
179      clipmem = GlobalAlloc (GHND, nbytes + 1);      if (il) {
180      if (clipmem == NULL)          SHGetPathFromIDList (il, folder);
181          BUG (NULL);          _SHFree (il);
182      p = (char *) GlobalLock (clipmem);          return folder;
183      if (p == NULL) {      }
184          rc = WPTERR_GENERAL;;      return NULL;
185          goto leave;      }
186      }  
187      memcpy (p, text, nbytes);  
188      p[nbytes] = '\0';  /* Return the clipboard contents as a string or NULL
189           if the clipboard does not contain text. */
190      GlobalUnlock (clipmem);  char*
191      SetClipboardData (CF_TEXT, clipmem);  get_clip_text (HWND hwnd)
192        {
193  leave:      HANDLE clipmem;
194      CloseClipboard ();      char *cliptxt, *p;  
195      return rc;      int len;
196  } /* set_clip_text */      
197        if (OpenClipboard (hwnd) == FALSE)
198            return NULL;
199  int      clipmem = GetClipboardData (CF_TEXT);
200  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int head_foot)      if (clipmem == NULL) {
201  {          p = NULL;
202      char *p, *new_text;          goto leave;
203        }
204      p = get_clip_text (hwnd);      cliptxt = (char *) GlobalLock (clipmem);
205      if (!p)      if (cliptxt == NULL) {
206          return WPTERR_CLIP_GET;          p = NULL;
207      new_text = new char [strlen (p)+strlen (text)+8];          goto leave;
208      if (!new_text)      }
209          BUG (0);      
210      if (head_foot == 0)      len =  strlen (cliptxt);
211          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);      p = new char[len + 1];
212      else      if (!p)
213          sprintf (new_text, "%s\n%s\n\n", p, text);          BUG (NULL);
214      set_clip_text (hwnd, new_text, strlen (new_text)+1);      memcpy (p, cliptxt, len);
215      free_if_alloc (p);      p[len] = '\0';
216      free_if_alloc (new_text);      GlobalUnlock (clipmem);
217      return 0;      
218  }  leave:
219        CloseClipboard ();
220        return p;
221  char*  }
222  make_filename( const char *path, const char *file, const char *ext )  
223  {  
224      char *p;  /* Set @text as the new clipboard content. */
225      size_t size = 0;  int
226    set_clip_text (HWND hwnd, const char *text, int nbytes)
227      if( path && *path )  {    
228          size += strlen( path );      HANDLE clipmem;
229      if( file && *file )      int rc = 0;
230          size += strlen( file );      char *p;
231      if( ext && *ext )      
232          size += strlen( ext );      if (OpenClipboard (hwnd) == FALSE)  
233      p = new char[size + 4];          return WPTERR_CLIP_OPEN;
234      memset( p, 0, size );      EmptyClipboard ();
235      if( path ) {  
236          strcat( p, path );      clipmem = GlobalAlloc (GHND, nbytes + 1);
237          if( path[strlen( path ) -1] != '\\' )      if (clipmem == NULL)
238              strcat( p, "\\" );          BUG (NULL);
239      }      p = (char *) GlobalLock (clipmem);
240      if( file )      if (p == NULL) {
241          strcat( p, file );          rc = WPTERR_GENERAL;;
242      if( ext ) {          goto leave;    
243          strcat( p, "." );      }
244          strcat( p, ext );      memcpy (p, text, nbytes);
245      }      p[nbytes] = '\0';
246      return p;      
247  } /* make_filename */      GlobalUnlock (clipmem);
248        SetClipboardData (CF_TEXT, clipmem);
249        
250  /* return 0 if it exists, otherwise >0. */  leave:
251  int      CloseClipboard ();
252  file_exist_check (const char * fname)      return rc;
253  {        } /* set_clip_text */
254      HANDLE fh;    
255    
256      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,  /* Append or prepend some text to the clipboard contents.
257                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );     If as_footer = 1, append the text otherwise prepend. */
258      if( fh == INVALID_HANDLE_VALUE )  int
259          return WPTERR_FILE_EXIST;  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
260      CloseHandle( fh );  {
261      return 0;      char *p, *new_text;
262  } /* file_exist_check */  
263        p = get_clip_text (hwnd);
264        if (!p)
265  int          return WPTERR_CLIP_GET;
266  dir_exist_check( const char *dir )      new_text = new char [strlen (p)+strlen (text)+8];
267  {      if (!new_text)
268      struct stat statbuf;              BUG (0);
269            if (as_footer == 0)
270      if( stat( dir, &statbuf ) == -1 )          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);
271          return WPTERR_GENERAL;      else
272      if( statbuf.st_mode & _S_IFDIR )          sprintf (new_text, "%s\n%s\n\n", p, text);
273          return 0;      set_clip_text (hwnd, new_text, strlen (new_text)+1);
274      return WPTERR_GENERAL;      free_if_alloc (p);
275  } /* dir_exist_check */      free_if_alloc (new_text);
276        return 0;
277    }
278  size_t  
279  get_file_size( const char *fname )  
280  {  /* Make a file name out of the path @path, the file @file and
281      size_t fsize;     an extension. @ext.
282      HANDLE fh;     Return value: the full file name on success. */
283    char*
284      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,  make_filename (const char *path, const char *file, const char *ext)
285                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );  {
286      if( fh == INVALID_HANDLE_VALUE )      char *p;
287          return 0;      size_t size = 0;
288      fsize = GetFileSize( fh, NULL );  
289      if( fsize == 0xFFFFFFFF )      if( path && *path )
290          fsize = 0;          size += strlen( path );
291      CloseHandle( fh );      if( file && *file )
292      return fsize;          size += strlen( file );
293  } /* get_file_size */      if( ext && *ext )
294            size += strlen( ext );
295        p = new char[size + 4];
296  int      memset( p, 0, size );
297  init_file_lock( LOCK *ctx, const char *file )      if( path ) {
298  {          strcat( p, path );
299                if( path[strlen( path ) -1] != '\\' )
300      ctx->size = get_file_size( file );              strcat( p, "\\" );
301      ctx->file = m_strdup( file );      }
302      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,      if( file )
303                           OPEN_ALWAYS, 0, NULL );          strcat( p, file );
304      if( ctx->fh == INVALID_HANDLE_VALUE )      if( ext ) {
305          return WPTERR_GENERAL;          strcat( p, "." );
306      if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {          strcat( p, ext );
307          CloseHandle( ctx->fh );      }
308          ctx->fh = INVALID_HANDLE_VALUE;      return p;
309          ctx->size = 0;  }
310          free( ctx->file );  
311          return WPTERR_GENERAL;  
312      }  /* return 0 if the file @fname exists, otherwise >0. */
313      return 0;  int
314  } /* init_file_lock */  file_exist_check (const char *fname)
315    {
316        struct stat st;
317  void      if (stat (fname, &st) == -1)
318  release_file_lock( LOCK *ctx )          return WPTERR_FILE_EXIST;
319  {      return 0;
320      free_if_alloc( ctx->file );  }
321      ctx->file = NULL;  
322      ctx->size = 0;  
323      CloseHandle( ctx->fh );  /* Check if the current folder exists.
324  } /* release_file_lock */     Return 0 for success. */
325    int
326    dir_exist_check (const char *dir)
327  int  {
328  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,      struct stat statbuf;    
329                                    LPARAM param, LPCTSTR title, int title_id )      
330  {      if (stat (dir, &statbuf) == -1)
331      #ifndef LANG_DE          return WPTERR_GENERAL;
332      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )      if (statbuf.st_mode & _S_IFDIR)
333          return -1;                return 0;
334      #else      return WPTERR_GENERAL;
335      char strdesc[256];  }
336      LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );  
337      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )  
338          return -1;  /* Return the file size of the given file @fname. */
339      #endif  DWORD
340        get_file_size (const char *fname)
341      return DialogBoxParam( hinst, name, parent, fnc, param );  {
342  } /* dialog_box_param */      DWORD fsize;
343        HANDLE fh;
344    
345  int      fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
346  msg_box( HWND hwnd, const char *text, const char *title, int mode )                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
347  {      if (fh == INVALID_HANDLE_VALUE)
348      mode |= MB_SETFOREGROUND;          return 0;
349      mode |= MB_TASKMODAL;      fsize = GetFileSize (fh, NULL);
350      mode |= MB_TOPMOST;      if (fsize == 0xFFFFFFFF)
351      return MessageBox(hwnd, text, title, mode);          fsize = 0;
352  } /* msg_box */      CloseHandle (fh);
353        return fsize;
354    }
355  void  
356  set_active_window( HWND dlg )  
357  {        /* Start a dialog with the exception that before it is checked that the
358      activ_hwnd = dlg;     dialog is not already openened. */
359  } /* set_active_window */  int
360    dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
361  void                    LPARAM param, LPCTSTR title, int title_id)
362  reset_active_window( void )  {
363  {            if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
364      activ_hwnd = NULL;          return -1;
365  } /* reset_active_window */      return DialogBoxParam (hinst, name, parent, fnc, param);
366    }
367    
368  static DWORD CALLBACK  
369  reminder_thread( void *ctx )  /* Wrapper for message box which forces the message box into the
370  {     foreground and it is displayed always on top. */
371      reminder_ctx_s *c = (reminder_ctx_s *)ctx;  int
372    msg_box (HWND hwnd, const char *text, const char *title, int mode)
373      Sleep( c->msecs );  {
374      SetForegroundWindow( activ_hwnd );      mode |= MB_SETFOREGROUND;
375        mode |= MB_TASKMODAL;
376      return 0;      mode |= MB_TOPMOST;
377  } /* reminder_thread */      return MessageBox(hwnd, text, title, mode);
378    }
379  HANDLE  
380  window_reminder( struct reminder_ctx_s *ctx )  
381  {  /* Safe strdup version (C++ version). */
382      DWORD tid = 0;  char*
383        m_strdup (const char *str)
384      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );  {
385  } /* window_reminder */      char *p = new char[strlen (str) + 1];
386        if (!p)
387            BUG (NULL);
388  char *      strcpy (p, str);
389  m_strdup (const char *str)      return p;
390  {  }
391      char * p = new char[strlen (str) + 1];  
392      if (p)  
393          strcpy (p, str);  /* Center the hwndChild relative to parent.
394      return p;     The style param allows to specificy additional styles (like topmost). */
395  } /* m_strdup */  void
396    center_window2 (HWND hwndChild, HWND parent, HWND style)
397    {    
398  void      HWND hwndParent;
399  center_window2 (HWND hwndChild, HWND style)      RECT rChild, rParent;    
400  {          HDC hdc;
401      HWND hwndParent;      int wChild, hChild, wParent, hParent;    
402      RECT rChild, rParent;          int wScreen, hScreen, xNew, yNew;
403      HDC hdc;      int flags = SWP_NOSIZE | SWP_NOZORDER;
404      int wChild, hChild, wParent, hParent;      
405      int wScreen, hScreen, xNew, yNew;      hwndParent = parent;
406      int flags = SWP_NOSIZE | SWP_NOZORDER;      if (hwndParent == NULL)
407            hwndParent = GetDesktopWindow ();
408      hwndParent = GetDesktopWindow ();      GetWindowRect (hwndChild, &rChild);    
409      GetWindowRect (hwndChild, &rChild);          wChild = rChild.right - rChild.left;    
410      wChild = rChild.right - rChild.left;          hChild = rChild.bottom - rChild.top;
411      hChild = rChild.bottom - rChild.top;  
412        GetWindowRect (hwndParent, &rParent);    
413      GetWindowRect (hwndParent, &rParent);          wParent = rParent.right - rParent.left;    
414      wParent = rParent.right - rParent.left;          hParent = rParent.bottom - rParent.top;      
415      hParent = rParent.bottom - rParent.top;            
416            hdc = GetDC (hwndChild);    
417      hdc = GetDC (hwndChild);          wScreen = GetDeviceCaps (hdc, HORZRES);    
418      wScreen = GetDeviceCaps (hdc, HORZRES);          hScreen = GetDeviceCaps (hdc, VERTRES);    
419      hScreen = GetDeviceCaps (hdc, VERTRES);          ReleaseDC (hwndChild, hdc);      
420      ReleaseDC (hwndChild, hdc);            xNew = rParent.left + ((wParent - wChild) /2);    
421      xNew = rParent.left + ((wParent - wChild) /2);          if (xNew < 0)
422      if (xNew < 0)          xNew = 0;
423          xNew = 0;      else if ((xNew+wChild) > wScreen)
424      else if ((xNew+wChild) > wScreen)          xNew = wScreen - wChild;
425          xNew = wScreen - wChild;      yNew = rParent.top  + ((hParent - hChild) /2);
426      yNew = rParent.top  + ((hParent - hChild) /2);      if (yNew < 0)
427      if (yNew < 0)          yNew = 0;
428          yNew = 0;      else if ((yNew+hChild) > hScreen)
429      else if ((yNew+hChild) > hScreen)          yNew = hScreen - hChild;
430          yNew = hScreen - hChild;      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)
431      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)          flags = SWP_NOMOVE | SWP_NOSIZE;
432          flags = SWP_NOMOVE | SWP_NOSIZE;      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
433      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);  }
434  }  
435    
436    /* Center the given hwndChild window with no special style. */
437  void  void
438  center_window (HWND hwndChild)  center_window (HWND hwndChild, HWND hwndParent)
439  {  {
440      center_window2 (hwndChild, NULL);      center_window2 (hwndChild, hwndParent, NULL);
441  }  }
442    
443    
444    /* Retrieve the product verion of the given file @fname.
445       Format: MAJOR.MINOR.PATCH1.PATCH2
446       Return value: 0 on success. */
447    int
448    get_file_version (const char *fname, WORD *major, WORD *minor,
449                      WORD *patch1, WORD *patch2)
450    {
451        VS_FIXEDFILEINFO *inf = {0};
452        char file[MAX_PATH+1] = {0};
453        LPVOID buf, data;
454        DWORD arg;
455        DWORD size;
456        UINT qlen;
457    
458        strncpy (file, fname, MAX_PATH);
459        size = GetFileVersionInfoSize (file, &arg);
460        if (!size)
461            return -1;
462        buf = (LPVOID)new CHAR[size];
463        if (!buf)
464            BUG (NULL);
465        GetFileVersionInfo (file, 0, size, buf);
466    
467        qlen=0;
468        VerQueryValue (buf, "\\", &data, &qlen);
469        if (!qlen) {
470            delete [] (char*)buf;
471            return -1;
472        }
473        inf = (VS_FIXEDFILEINFO*)data;
474    
475        if (major)
476            *major = HIWORD (inf->dwProductVersionMS);
477        if (minor)
478            *minor = LOWORD (inf->dwProductVersionMS);
479        if (patch1)
480            *patch1 = HIWORD (inf->dwProductVersionLS);    
481        if (patch2)
482            *patch2 = LOWORD (inf->dwProductVersionLS);
483    
484        delete [] (char*)buf;
485        return 0;
486    }
487    
488    
489    /* Return date in a format which complies with the
490       system locale settings. */
491    const char*
492    get_locale_date (long tm_t, char *buf, DWORD buflen)
493    {
494        SYSTEMTIME st;
495        struct tm *ptm;
496    
497        ptm = localtime (&tm_t);  
498        st.wYear = (WORD)ptm->tm_year;
499        st.wMonth = (WORD)ptm->tm_mon;
500        st.wDay = (WORD)ptm->tm_mday;
501        st.wYear += 1900;
502        st.wMonth += 1;
503        if (!GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st,
504                            NULL, buf, buflen))
505            return NULL;
506        return buf;
507    }
508    
509    
510    struct reminder_hd_s {
511        int msecs;
512        HWND dlg;
513        HANDLE hd;
514    };
515    
516    
517    static DWORD CALLBACK
518    foreground_reminder_thread (void *c)
519    {
520        struct reminder_hd_s *ctx = (struct reminder_hd_s *)c;
521        Sleep (ctx->msecs);
522        SetForegroundWindow (ctx->dlg);
523        CloseHandle (ctx->hd);
524        delete ctx;
525        ExitThread (0);
526        return 0;
527    }
528    
529    /* Try to force the window @dlg to the foreground.
530       On NT5 or later this will not work if the user
531       is working in another window (console for example). */
532    void
533    force_foreground_window (HWND dlg, int msecs)
534    {
535        struct reminder_hd_s *hd;
536        DWORD tid;
537    
538        hd = new reminder_hd_s;
539        hd->dlg = dlg;
540        hd->msecs = msecs;
541        hd->hd = CreateThread (NULL, 0, foreground_reminder_thread,
542                               hd, NULL, &tid);
543    }
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