/[winpt]/trunk/Src/wptW32API.cpp
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revision 25 by twoaday, Wed Oct 12 10:04:26 2005 UTC revision 77 by twoaday, Mon Nov 14 15:01:01 2005 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 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"  
33  #include "wptTypes.h"  #include "wptNLS.h"
34    #include "wptW32API.h"
35    #include "wptErrors.h"
36  extern "C" void _SHFree (void *p);  #include "wptVersion.h"
37    #include "wptTypes.h"
38  /* The the text of a menu item. */  
39  void  
40  set_menu_text (HMENU menu, int m_uid, const char *text)  extern "C" void _SHFree (void *p);
41  {  
42      MENUITEMINFO mii;  
43      char menu_text[80];  static void
44        set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
45      memset (&mii, 0, sizeof (mii));  {
46      mii.cbSize = sizeof (mii);      MENUITEMINFO mii;
47      mii.fMask = MIIM_TYPE;      
48      mii.dwTypeData = menu_text;      memset (&mii, 0, sizeof mii);
49      mii.cch = sizeof (menu_text);      mii.cbSize = sizeof mii;
50      GetMenuItemInfo (menu, m_uid, FALSE, &mii);      mii.fMask = MIIM_TYPE;
51            mii.fType = MFT_STRING;
52      memset (&mii, 0, sizeof mii);      mii.dwTypeData = (char *) text;
53      mii.cbSize = sizeof mii;      SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
54      mii.fMask = MIIM_TYPE;  }
55      mii.fType = MFT_STRING;  
56      mii.dwTypeData = (char *) text;  
57      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  /* Set the text of a menu item @m_uid to @text. */
58  } /* set_menu_text */  void
59    set_menu_text (HMENU menu, int m_uid, const char *text)
60    {
61  void      set_menu_text_ext (menu, 0, m_uid, text);
62  set_menu_state (HMENU menu, int m_uid, int state)  }
63  {        
64      MENUITEMINFO mii;  
65    /* Set the text of a menu item with the position @pos to @text. */
66      memset( &mii, 0, sizeof (mii) );  void
67      mii.cbSize = sizeof (mii);  set_menu_text_bypos (HMENU menu, int pos, const char *text)
68      mii.fMask = MIIM_STATE;  {
69      mii.fState = state;      set_menu_text_ext (menu, 1, pos, text);
70      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  }
71  } /* set_menu_state */  
72    
73    /* Set the state of a menu item @m_uid to @state. */
74    void
75  /* Use the common dialog to request a file from the user.  set_menu_state (HMENU menu, int m_uid, int state)
76     id can be either FILE_OPEN or FILE_SAVE.  {      
77     The return value is the file name or NULL if cancel was chosen. */      MENUITEMINFO mii;
78  const char *  
79  get_filename_dlg (HWND hwnd, int id, const char * title,      memset( &mii, 0, sizeof (mii) );
80                    const char * filter, const char * name)      mii.cbSize = sizeof (mii);
81  {      mii.fMask = MIIM_STATE;
82      static char file[512] = "";      mii.fState = state;
83      OPENFILENAME open;      SetMenuItemInfo (menu, m_uid, FALSE, &mii);
84        }
85      if (name && strlen (name) < (sizeof (file)-1))  
86          strcpy (file, name);  
87      else  enum {
88          memset (file, 0, sizeof (file));      CDLG_FILE_OPEN = 0,
89      if (!filter)      CDLG_FILE_SAVE = 1
90          filter = _("All Files (*.*)\0*.*\0\0");  };
91      memset (&open, 0, sizeof (open));  
92      open.lStructSize = sizeof (OPENFILENAME);  /* Use the common dialog to request a file from the user.
93      open.hInstance = glob_hinst;     id can be either FILE_OPEN or FILE_SAVE.
94      open.lpstrTitle = title;     The return value is the file name or NULL if cancel was chosen. */
95      open.lpstrFilter = filter;  const char *
96      open.hwndOwner = hwnd;  get_filename_dlg (HWND hwnd, int id, const char * title,
97      open.lpstrFile = file;                    const char * filter, const char * name)
98      open.nMaxFile = sizeof (file) - 1;  {
99      if (id == FILE_OPEN)      static char file[512] = "";
100          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;      OPENFILENAME open;
101      else      
102          open.Flags = OFN_OVERWRITEPROMPT;      if (name && strlen (name) < (sizeof (file)-1))
103            strcpy (file, name);
104      if (id == FILE_OPEN && GetOpenFileName (&open))      else
105          return open.lpstrFile;          memset (file, 0, sizeof (file));
106      else if (id == FILE_SAVE && GetSaveFileName (&open))      if (!filter)
107          return open.lpstrFile;          filter = _("All Files (*.*)\0*.*\0\0");
108            /* XXX: problem with gettext because of the 'artificial'
109      return NULL;              double string termination!. */
110  }      memset (&open, 0, sizeof (open));
111        open.lStructSize = sizeof (OPENFILENAME);
112  const char*      open.hInstance = glob_hinst;
113  get_filesave_dlg (HWND hwnd, const char *title,      open.lpstrTitle = title;
114                    const char *filter, const char *name)      open.lpstrFilter = filter;
115  {      open.hwndOwner = hwnd;
116      return get_filename_dlg (hwnd, FILE_SAVE, title, filter, name);      open.lpstrFile = file;
117  }      open.nMaxFile = sizeof (file) - 1;
118        if (id == CDLG_FILE_OPEN)
119  const char *          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
120  get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,      else
121                    const char *name)          open.Flags = OFN_OVERWRITEPROMPT;
122  {  
123      return get_filename_dlg (hwnd, FILE_OPEN, title, filter, name);      if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
124  }          return open.lpstrFile;
125        else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
126            return open.lpstrFile;
127  /* Use the common dialog to allow the user to select a folder.      
128     The return value is either the folder path or NULL if cancel was chosen. */      return NULL;
129  const char*  }
130  get_folder_dlg (HWND hwnd, const char * title, const char * name)  
131  {  const char*
132      static char folder[MAX_PATH+1] = "";  get_filesave_dlg (HWND hwnd, const char *title,
133      BROWSEINFO bi;                    const char *filter, const char *name)
134      ITEMIDLIST * il;  {
135        return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
136      memset (&bi, 0, sizeof (bi));  }
137      bi.hwndOwner = hwnd;  
138      if (title)  const char *
139          bi.lpszTitle = title;  get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
140      if (name && strlen (name) < MAX_PATH-1)                    const char *name)
141          strcpy (folder, name);  {
142      else      return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
143          memset (folder, 0, sizeof (folder));  }
144      il = SHBrowseForFolder (&bi);  
145      if (il) {  
146          SHGetPathFromIDList (il, folder);  /* Use the common dialog to allow the user to select a folder.
147          _SHFree (il);     The return value is either the folder path or NULL if cancel was chosen. */
148          return folder;  const char*
149      }  get_folder_dlg (HWND hwnd, const char * title, const char * name)
150      return NULL;  {
151  }      static char folder[MAX_PATH+1] = "";
152        BROWSEINFO bi;
153        ITEMIDLIST * il;
154  /* Return the clipboard contents as a string or NULL  
155     if the clipboard does not contain text. */      memset (&bi, 0, sizeof (bi));
156  char*      bi.hwndOwner = hwnd;
157  get_clip_text (HWND hwnd)      if (title)
158  {          bi.lpszTitle = title;
159      HANDLE clipmem;      if (name && strlen (name) < MAX_PATH-1)
160      char *cliptxt, *p;            strcpy (folder, name);
161      int len;      else
162                memset (folder, 0, sizeof (folder));
163      if (OpenClipboard (hwnd) == FALSE)      il = SHBrowseForFolder (&bi);
164          return NULL;      if (il) {
165      clipmem = GetClipboardData (CF_TEXT);          SHGetPathFromIDList (il, folder);
166      if (clipmem == NULL) {          _SHFree (il);
167          p = NULL;          return folder;
168          goto leave;      }
169      }      return NULL;
170      cliptxt = (char *) GlobalLock (clipmem);  }
171      if (cliptxt == NULL) {  
172          p = NULL;  
173          goto leave;  /* Return the clipboard contents as a string or NULL
174      }     if the clipboard does not contain text. */
175        char*
176      len =  strlen (cliptxt);  get_clip_text (HWND hwnd)
177      p = new char[len + 1];  {
178      if (!p)      HANDLE clipmem;
179          BUG (NULL);      char *cliptxt, *p;  
180      memcpy (p, cliptxt, len);      int len;
181      p[len] = '\0';      
182      GlobalUnlock (clipmem);      if (OpenClipboard (hwnd) == FALSE)
183                return NULL;
184  leave:      clipmem = GetClipboardData (CF_TEXT);
185      CloseClipboard ();      if (clipmem == NULL) {
186      return p;          p = NULL;
187  }          goto leave;
188        }
189        cliptxt = (char *) GlobalLock (clipmem);
190  /* Set the the given text to the clipboard. */      if (cliptxt == NULL) {
191  int          p = NULL;
192  set_clip_text (HWND hwnd, const char *text, int nbytes)          goto leave;
193  {          }
194      HANDLE clipmem;      
195      int rc = 0;      len =  strlen (cliptxt);
196      char *p;      p = new char[len + 1];
197            if (!p)
198      if (OpenClipboard (hwnd) == FALSE)            BUG (NULL);
199          return WPTERR_CLIP_OPEN;      memcpy (p, cliptxt, len);
200      EmptyClipboard ();      p[len] = '\0';
201        GlobalUnlock (clipmem);
202      clipmem = GlobalAlloc (GHND, nbytes + 1);      
203      if (clipmem == NULL)  leave:
204          BUG (NULL);      CloseClipboard ();
205      p = (char *) GlobalLock (clipmem);      return p;
206      if (p == NULL) {  }
207          rc = WPTERR_GENERAL;;  
208          goto leave;      
209      }  /* Set @text as the new clipboard content. */
210      memcpy (p, text, nbytes);  int
211      p[nbytes] = '\0';  set_clip_text (HWND hwnd, const char *text, int nbytes)
212        {    
213      GlobalUnlock (clipmem);      HANDLE clipmem;
214      SetClipboardData (CF_TEXT, clipmem);      int rc = 0;
215            char *p;
216  leave:      
217      CloseClipboard ();      if (OpenClipboard (hwnd) == FALSE)  
218      return rc;          return WPTERR_CLIP_OPEN;
219  } /* set_clip_text */      EmptyClipboard ();
220    
221        clipmem = GlobalAlloc (GHND, nbytes + 1);
222  /* Append or prepend some text to the clipboard contents.      if (clipmem == NULL)
223     If as_footer = 1, append the text otherwise prepend. */          BUG (NULL);
224  int      p = (char *) GlobalLock (clipmem);
225  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)      if (p == NULL) {
226  {          rc = WPTERR_GENERAL;;
227      char *p, *new_text;          goto leave;    
228        }
229      p = get_clip_text (hwnd);      memcpy (p, text, nbytes);
230      if (!p)      p[nbytes] = '\0';
231          return WPTERR_CLIP_GET;      
232      new_text = new char [strlen (p)+strlen (text)+8];      GlobalUnlock (clipmem);
233      if (!new_text)      SetClipboardData (CF_TEXT, clipmem);
234          BUG (0);      
235      if (as_footer == 0)  leave:
236          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);      CloseClipboard ();
237      else      return rc;
238          sprintf (new_text, "%s\n%s\n\n", p, text);  } /* set_clip_text */
239      set_clip_text (hwnd, new_text, strlen (new_text)+1);  
240      free_if_alloc (p);  
241      free_if_alloc (new_text);  /* Append or prepend some text to the clipboard contents.
242      return 0;     If as_footer = 1, append the text otherwise prepend. */
243  }  int
244    set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
245    {
246  /* Make a file name out of the path, the file and an extension. */      char *p, *new_text;
247  char*  
248  make_filename (const char *path, const char *file, const char *ext)      p = get_clip_text (hwnd);
249  {      if (!p)
250      char *p;          return WPTERR_CLIP_GET;
251      size_t size = 0;      new_text = new char [strlen (p)+strlen (text)+8];
252        if (!new_text)
253      if( path && *path )          BUG (0);
254          size += strlen( path );      if (as_footer == 0)
255      if( file && *file )          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);
256          size += strlen( file );      else
257      if( ext && *ext )          sprintf (new_text, "%s\n%s\n\n", p, text);
258          size += strlen( ext );      set_clip_text (hwnd, new_text, strlen (new_text)+1);
259      p = new char[size + 4];      free_if_alloc (p);
260      memset( p, 0, size );      free_if_alloc (new_text);
261      if( path ) {      return 0;
262          strcat( p, path );  }
263          if( path[strlen( path ) -1] != '\\' )  
264              strcat( p, "\\" );  
265      }  /* Make a file name out of the path, the file and an extension. */
266      if( file )  char*
267          strcat( p, file );  make_filename (const char *path, const char *file, const char *ext)
268      if( ext ) {  {
269          strcat( p, "." );      char *p;
270          strcat( p, ext );      size_t size = 0;
271      }  
272      return p;      if( path && *path )
273  } /* make_filename */          size += strlen( path );
274        if( file && *file )
275            size += strlen( file );
276  /* return 0 if it exists, otherwise >0. */      if( ext && *ext )
277  int          size += strlen( ext );
278  file_exist_check (const char * fname)      p = new char[size + 4];
279  {      memset( p, 0, size );
280      struct stat st;      if( path ) {
281      if (stat (fname, &st) == -1)          strcat( p, path );
282          return WPTERR_FILE_EXIST;          if( path[strlen( path ) -1] != '\\' )
283      return 0;              strcat( p, "\\" );
284  }      }
285        if( file )
286            strcat( p, file );
287  /* Check if the current folder exists.      if( ext ) {
288     Return 0 for success. */          strcat( p, "." );
289  int          strcat( p, ext );
290  dir_exist_check (const char *dir)      }
291  {      return p;
292      struct stat statbuf;      } /* make_filename */
293        
294      if( stat( dir, &statbuf ) == -1 )  
295          return WPTERR_GENERAL;  /* return 0 if it exists, otherwise >0. */
296      if( statbuf.st_mode & _S_IFDIR )  int
297          return 0;  file_exist_check (const char * fname)
298      return WPTERR_GENERAL;  {
299  }      struct stat st;
300        if (stat (fname, &st) == -1)
301            return WPTERR_FILE_EXIST;
302  /* Return the file size of the given file. */      return 0;
303  size_t  }
304  get_file_size (const char *fname)  
305  {  
306      size_t fsize;  /* Check if the current folder exists.
307      HANDLE fh;     Return 0 for success. */
308    int
309      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,  dir_exist_check (const char *dir)
310                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );  {
311      if( fh == INVALID_HANDLE_VALUE )      struct stat statbuf;    
312          return 0;      
313      fsize = GetFileSize( fh, NULL );      if( stat( dir, &statbuf ) == -1 )
314      if( fsize == 0xFFFFFFFF )          return WPTERR_GENERAL;
315          fsize = 0;      if( statbuf.st_mode & _S_IFDIR )
316      CloseHandle( fh );          return 0;
317      return fsize;      return WPTERR_GENERAL;
318  } /* get_file_size */  }
319    
320    
321  int  /* Return the file size of the given file @fname. */
322  init_file_lock( LOCK *ctx, const char *file )  DWORD
323  {  get_file_size (const char *fname)
324        {
325      ctx->size = get_file_size( file );      DWORD fsize;
326      ctx->file = m_strdup( file );      HANDLE fh;
327      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,  
328                           OPEN_ALWAYS, 0, NULL );      fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
329      if( ctx->fh == INVALID_HANDLE_VALUE )                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
330          return WPTERR_GENERAL;      if (fh == INVALID_HANDLE_VALUE)
331      if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {          return 0;
332          CloseHandle( ctx->fh );      fsize = GetFileSize (fh, NULL);
333          ctx->fh = INVALID_HANDLE_VALUE;      if (fsize == 0xFFFFFFFF)
334          ctx->size = 0;          fsize = 0;
335          free( ctx->file );      CloseHandle (fh);
336          return WPTERR_GENERAL;      return fsize;
337      }  }
338      return 0;  
339  } /* init_file_lock */  
340    int
341    init_file_lock( LOCK *ctx, const char *file )
342  void  {
343  release_file_lock( LOCK *ctx )      
344  {      ctx->size = get_file_size( file );
345      free_if_alloc( ctx->file );      ctx->file = m_strdup( file );
346      ctx->file = NULL;      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,
347      ctx->size = 0;                           OPEN_ALWAYS, 0, NULL );
348      CloseHandle( ctx->fh );      if( ctx->fh == INVALID_HANDLE_VALUE )
349  } /* release_file_lock */          return WPTERR_GENERAL;
350        if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {
351            CloseHandle( ctx->fh );
352  /* Start a dialog with the exception that before it is checked that the          ctx->fh = INVALID_HANDLE_VALUE;
353     dialog is not already openened. */          ctx->size = 0;
354  int          free( ctx->file );
355  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,          return WPTERR_GENERAL;
356                                    LPARAM param, LPCTSTR title, int title_id )      }
357  {      return 0;
358      #ifndef LANG_DE  } /* init_file_lock */
359      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )  
360          return -1;        
361      #else  void
362      char strdesc[256];  release_file_lock( LOCK *ctx )
363      LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );  {
364      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )      free_if_alloc( ctx->file );
365          return -1;      ctx->file = NULL;
366      #endif      ctx->size = 0;
367            CloseHandle( ctx->fh );
368      return DialogBoxParam( hinst, name, parent, fnc, param );  } /* release_file_lock */
369  } /* dialog_box_param */  
370    
371    /* Start a dialog with the exception that before it is checked that the
372  /* Wrapper for message box which forces the message box into the     dialog is not already openened. */
373     foreground and it is displayed always on top. */  int
374  int  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
375  msg_box (HWND hwnd, const char *text, const char *title, int mode)                                    LPARAM param, LPCTSTR title, int title_id )
376  {  {
377      mode |= MB_SETFOREGROUND;      #ifndef LANG_DE
378      mode |= MB_TASKMODAL;      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )
379      mode |= MB_TOPMOST;          return -1;      
380      return MessageBox(hwnd, text, title, mode);      #else
381  }      char strdesc[256];
382        LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );
383        if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )
384  void          return -1;
385  set_active_window( HWND dlg)      #endif
386  {            
387      activ_hwnd = dlg;      return DialogBoxParam( hinst, name, parent, fnc, param );
388  } /* set_active_window */  } /* dialog_box_param */
389    
390  void  
391  reset_active_window( void )  /* Wrapper for message box which forces the message box into the
392  {           foreground and it is displayed always on top. */
393      activ_hwnd = NULL;  int
394  } /* reset_active_window */  msg_box (HWND hwnd, const char *text, const char *title, int mode)
395    {
396        mode |= MB_SETFOREGROUND;
397  static DWORD CALLBACK      mode |= MB_TASKMODAL;
398  reminder_thread (void *ctx)      mode |= MB_TOPMOST;
399  {      return MessageBox(hwnd, text, title, mode);
400      reminder_ctx_s *c = (reminder_ctx_s *)ctx;  }
401    
402      Sleep( c->msecs );  
403      SetForegroundWindow( activ_hwnd );  void
404    set_active_window( HWND dlg)
405      return 0;  {      
406  } /* reminder_thread */      activ_hwnd = dlg;
407    } /* set_active_window */
408    
409  HANDLE  void
410  window_reminder( struct reminder_ctx_s *ctx )  reset_active_window( void )
411  {  {      
412      DWORD tid = 0;      activ_hwnd = NULL;
413        } /* reset_active_window */
414      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );  
415  } /* window_reminder */  
416    static DWORD CALLBACK
417    reminder_thread (void *ctx)
418  char*  {
419  m_strdup (const char *str)      reminder_ctx_s *c = (reminder_ctx_s *)ctx;
420  {  
421      char * p = new char[strlen (str) + 1];      Sleep( c->msecs );
422      if (p)      SetForegroundWindow( activ_hwnd );
423          strcpy (p, str);  
424      return p;      return 0;
425  } /* m_strdup */  } /* reminder_thread */
426    
427    
428  /* Center the hwndChild relative to parent.  HANDLE
429     The style param allows to specificy additional styles (like topmost). */  window_reminder( struct reminder_ctx_s *ctx )
430  void  {
431  center_window2 (HWND hwndChild, HWND parent, HWND style)      DWORD tid = 0;
432  {          
433      HWND hwndParent;      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );
434      RECT rChild, rParent;      } /* window_reminder */
435      HDC hdc;  
436      int wChild, hChild, wParent, hParent;      
437      int wScreen, hScreen, xNew, yNew;  char*
438      int flags = SWP_NOSIZE | SWP_NOZORDER;  m_strdup (const char *str)
439    {
440      hwndParent = parent;      char * p = new char[strlen (str) + 1];
441      if (hwndParent == NULL)      if (p)
442          hwndParent = GetDesktopWindow ();          strcpy (p, str);
443      GetWindowRect (hwndChild, &rChild);          return p;
444      wChild = rChild.right - rChild.left;      } /* m_strdup */
445      hChild = rChild.bottom - rChild.top;  
446    
447      GetWindowRect (hwndParent, &rParent);      /* Center the hwndChild relative to parent.
448      wParent = rParent.right - rParent.left;         The style param allows to specificy additional styles (like topmost). */
449      hParent = rParent.bottom - rParent.top;        void
450        center_window2 (HWND hwndChild, HWND parent, HWND style)
451      hdc = GetDC (hwndChild);      {    
452      wScreen = GetDeviceCaps (hdc, HORZRES);          HWND hwndParent;
453      hScreen = GetDeviceCaps (hdc, VERTRES);          RECT rChild, rParent;    
454      ReleaseDC (hwndChild, hdc);            HDC hdc;
455      xNew = rParent.left + ((wParent - wChild) /2);          int wChild, hChild, wParent, hParent;    
456      if (xNew < 0)      int wScreen, hScreen, xNew, yNew;
457          xNew = 0;      int flags = SWP_NOSIZE | SWP_NOZORDER;
458      else if ((xNew+wChild) > wScreen)  
459          xNew = wScreen - wChild;      hwndParent = parent;
460      yNew = rParent.top  + ((hParent - hChild) /2);      if (hwndParent == NULL)
461      if (yNew < 0)          hwndParent = GetDesktopWindow ();
462          yNew = 0;      GetWindowRect (hwndChild, &rChild);    
463      else if ((yNew+hChild) > hScreen)      wChild = rChild.right - rChild.left;    
464          yNew = hScreen - hChild;      hChild = rChild.bottom - rChild.top;
465      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)  
466          flags = SWP_NOMOVE | SWP_NOSIZE;      GetWindowRect (hwndParent, &rParent);    
467      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);      wParent = rParent.right - rParent.left;    
468  }      hParent = rParent.bottom - rParent.top;      
469        
470        hdc = GetDC (hwndChild);    
471  /* Center the given hwndChild window with no special style. */      wScreen = GetDeviceCaps (hdc, HORZRES);    
472  void      hScreen = GetDeviceCaps (hdc, VERTRES);    
473  center_window (HWND hwndChild, HWND hwndParent)      ReleaseDC (hwndChild, hdc);      
474  {      xNew = rParent.left + ((wParent - wChild) /2);    
475      center_window2 (hwndChild, hwndParent, NULL);      if (xNew < 0)
476  }          xNew = 0;
477        else if ((xNew+wChild) > wScreen)
478            xNew = wScreen - wChild;
479        yNew = rParent.top  + ((hParent - hChild) /2);
480        if (yNew < 0)
481            yNew = 0;
482        else if ((yNew+hChild) > hScreen)
483            yNew = hScreen - hChild;
484        if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)
485            flags = SWP_NOMOVE | SWP_NOSIZE;
486        SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
487    }
488    
489    
490    /* Center the given hwndChild window with no special style. */
491    void
492    center_window (HWND hwndChild, HWND hwndParent)
493    {
494        center_window2 (hwndChild, hwndParent, NULL);
495    }
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