/[winpt]/trunk/Src/wptW32API.cpp
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revision 22 by twoaday, Wed Aug 10 11:33:35 2005 UTC revision 248 by twoaday, Fri Jul 28 11:11:09 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 "wptUTF8.h"
39   * The the text of a menu item.  #include "wptTypes.h"
40   */  
41  void  
42  set_menu_text (HMENU menu, int m_uid, const char *text)  extern "C" void _SHFree (void *p);
43  {  
44      MENUITEMINFO mii;  
45      char menu_text[80];  
46        /* Insert a new item into the menu @hm at position @pos. */
47      memset (&mii, 0, sizeof (mii));  void
48      mii.cbSize = sizeof (mii);  insert_menu_item (HMENU hm, int pos, UINT m_id, const char *text)
49      mii.fMask = MIIM_TYPE;  {
50      mii.dwTypeData = menu_text;      MENUITEMINFO mi;
51      mii.cch = sizeof (menu_text);  
52      GetMenuItemInfo (menu, m_uid, FALSE, &mii);      memset (&mi, 0, sizeof mi);
53            mi.cbSize = sizeof mi;
54      memset (&mii, 0, sizeof mii);      mi.fType = MF_STRING;
55      mii.cbSize = sizeof mii;      mi.dwTypeData = (char *)text;
56      mii.fMask = MIIM_TYPE;      mi.cch = strlen (text);
57      mii.fType = MFT_STRING;      mi.wID = m_id;
58      mii.dwTypeData = (char *) text;      mi.fMask = MIIM_ID|MIIM_DATA| MIIM_TYPE;
59      SetMenuItemInfo (menu, m_uid, FALSE, &mii);      InsertMenuItem (hm, pos, FALSE, &mi);
60  } /* set_menu_text */  }
61    
62    
63  void  static void
64  set_menu_state (HMENU menu, int m_uid, int state)  set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
65  {        {
66      MENUITEMINFO mii;      MENUITEMINFO mii;
67        
68      memset( &mii, 0, sizeof (mii) );      memset (&mii, 0, sizeof mii);
69      mii.cbSize = sizeof (mii);      mii.cbSize = sizeof mii;
70      mii.fMask = MIIM_STATE;      mii.fMask = MIIM_TYPE;
71      mii.fState = state;      mii.fType = MFT_STRING;
72      SetMenuItemInfo (menu, m_uid, FALSE, &mii);      mii.dwTypeData = (char *) text;
73  } /* set_menu_state */      SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
74    }
75    
76    
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*.*");      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      open.Flags = 0;  
99        memset (&mii, 0, sizeof (mii));
100      if (id == 0 && GetOpenFileName (&open))      mii.cbSize = sizeof (mii);
101          return open.lpstrFile;      mii.fMask = MIIM_STATE;
102      else if (id == 1 && GetSaveFileName (&open))      mii.fState = state;
103          return open.lpstrFile;      SetMenuItemInfo (menu, m_uid, FALSE, &mii);
104        }
105      return NULL;  
106  } /* get_filename_dlg */  
107    /* Retrieve the state of the menu item @m_uid and return it. */
108    UINT
109  const char *  get_menu_state (HMENU menu, UINT m_uid)
110  get_folder_dlg (HWND hwnd, const char * title, const char * name)  {
111  {      MENUITEMINFO mii;
112      static char folder[MAX_PATH] = "";  
113      BROWSEINFO bi;      memset (&mii, 0, sizeof (mii));
114      ITEMIDLIST * il;      mii.cbSize = sizeof (mii);
115        mii.fMask = MIIM_STATE;
116      memset (&bi, 0, sizeof (bi));      GetMenuItemInfo (menu, m_uid, FALSE, &mii);
117      bi.hwndOwner = hwnd;      return mii.fState;
118      if (title)  }
119          bi.lpszTitle = title;  
120      if (name && strlen (name) < MAX_PATH-1)  
121          strcpy (folder, name);  enum {
122      else      CDLG_FILE_OPEN = 0,
123          memset (folder, 0, sizeof (folder));      CDLG_FILE_SAVE = 1
124      il = SHBrowseForFolder (&bi);  };
125      if (il) {  
126          SHGetPathFromIDList (il, folder);  /* Use the common dialog to request a file from the user.
127          _SHFree (il);     id can be either FILE_OPEN or FILE_SAVE.
128          return folder;     The return value is the file name or NULL if cancel was chosen. */
129      }  const char *
130      return NULL;  get_filename_dlg (HWND hwnd, int id, const char *title,
131  }                    const char *filter, const char *name)
132    {
133        static char file[512] = "";
134  char*      OPENFILENAME open;
135  get_clip_text (HWND hwnd)      
136  {      if (name && strlen (name) < (sizeof (file)-1))
137      HANDLE clipmem;          strcpy (file, name);
138      char *cliptxt, *p;        else
139      int len;          memset (file, 0, sizeof (file));
140            if (!filter)
141      if (OpenClipboard (hwnd) == FALSE)          filter = "All Files (*.*)\0*.*\0\0";
142          return NULL;      /* XXX: problem with gettext because of the 'artificial'
143      clipmem = GetClipboardData (CF_TEXT);              double string termination!. */
144      if (clipmem == NULL) {      memset (&open, 0, sizeof (open));
145          p = NULL;      open.lStructSize = sizeof (OPENFILENAME);
146          goto leave;      open.hInstance = glob_hinst;
147      }      open.lpstrTitle = title;
148      cliptxt = (char *) GlobalLock (clipmem);      open.lpstrFilter = filter;
149      if (cliptxt == NULL) {      open.hwndOwner = hwnd;
150          p = NULL;      open.lpstrFile = file;
151          goto leave;      open.nMaxFile = sizeof (file) - 1;
152      }      if (id == CDLG_FILE_OPEN)
153                open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
154      len =  strlen (cliptxt);      else
155      p = new char[len + 1];          open.Flags = OFN_OVERWRITEPROMPT;
156      if (!p)  
157          BUG (NULL);      if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
158      memcpy (p, cliptxt, len);          return open.lpstrFile;
159      p[len] = '\0';      else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
160      GlobalUnlock (clipmem);          return open.lpstrFile;
161            
162  leave:      return NULL;
163      CloseClipboard ();  }
164      return p;  
165  } /* get_clip_text */  const char*
166    get_filesave_dlg (HWND hwnd, const char *title,
167                      const char *filter, const char *name)
168  int  {
169  set_clip_text (HWND hwnd, const char *text, int nbytes)      return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
170  {      }
171      HANDLE clipmem;  
172      int rc = 0;  const char*
173      char *p;  get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
174                          const char *name)
175      if (OpenClipboard (hwnd) == FALSE)    {
176          return WPTERR_CLIP_OPEN;      return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
177      EmptyClipboard ();  }
178    
179      clipmem = GlobalAlloc (GHND, nbytes + 1);  
180      if (clipmem == NULL)  /* Use the common dialog to allow the user to select a folder.
181          BUG (NULL);     The return value is either the folder path or NULL if cancel was chosen. */
182      p = (char *) GlobalLock (clipmem);  const char*
183      if (p == NULL) {  get_folder_dlg (HWND hwnd, const char *title, const char *name)
184          rc = WPTERR_GENERAL;;  {
185          goto leave;          static char folder[MAX_PATH+1] = "";
186      }      BROWSEINFO bi;
187      memcpy (p, text, nbytes);      ITEMIDLIST *il;
188      p[nbytes] = '\0';  
189            memset (&bi, 0, sizeof (bi));
190      GlobalUnlock (clipmem);      bi.hwndOwner = hwnd;
191      SetClipboardData (CF_TEXT, clipmem);      if (title)
192                bi.lpszTitle = title;
193  leave:      if (name && strlen (name) < MAX_PATH-1)
194      CloseClipboard ();          strcpy (folder, name);
195      return rc;      else
196  } /* set_clip_text */          memset (folder, 0, sizeof (folder));
197        il = SHBrowseForFolder (&bi);
198        if (il) {
199  int          SHGetPathFromIDList (il, folder);
200  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int head_foot)          _SHFree (il);
201  {          return folder;
202      char *p, *new_text;      }
203        return NULL;
204      p = get_clip_text (hwnd);  }
205      if (!p)  
206          return WPTERR_CLIP_GET;  
207      new_text = new char [strlen (p)+strlen (text)+8];  /* Return the clipboard contents as a string or NULL
208      if (!new_text)     if the clipboard does not contain text. */
209          BUG (0);  char*
210      if (head_foot == 0)  get_clip_text (HWND hwnd)
211          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);  {
212      else      HANDLE clipmem;
213          sprintf (new_text, "%s\n%s\n\n", p, text);      char *cliptxt, *p;  
214      set_clip_text (hwnd, new_text, strlen (new_text)+1);      int len;
215      free_if_alloc (p);      
216      free_if_alloc (new_text);      if (OpenClipboard (hwnd) == FALSE)
217      return 0;          return NULL;
218  }      clipmem = GetClipboardData (CF_TEXT);
219        if (clipmem == NULL) {
220            p = NULL;
221  char*          goto leave;
222  make_filename( const char *path, const char *file, const char *ext )      }
223  {      cliptxt = (char *) GlobalLock (clipmem);
224      char *p;      if (cliptxt == NULL) {
225      size_t size = 0;          p = NULL;
226            goto leave;
227      if( path && *path )      }
228          size += strlen( path );      
229      if( file && *file )      len =  strlen (cliptxt);
230          size += strlen( file );      p = new char[len + 1];
231      if( ext && *ext )      if (!p)
232          size += strlen( ext );          BUG (NULL);
233      p = new char[size + 4];      memcpy (p, cliptxt, len);
234      memset( p, 0, size );      p[len] = '\0';
235      if( path ) {      GlobalUnlock (clipmem);
236          strcat( p, path );      
237          if( path[strlen( path ) -1] != '\\' )  leave:
238              strcat( p, "\\" );      CloseClipboard ();
239      }      return p;
240      if( file )  }
241          strcat( p, file );  
242      if( ext ) {  
243          strcat( p, "." );  /* Set @text as the new clipboard content. */
244          strcat( p, ext );  int
245      }  set_clip_text (HWND hwnd, const char *text, int nbytes)
246      return p;  {    
247  } /* make_filename */      HANDLE clipmem;
248        int rc = 0;
249        char *p;
250  /* return 0 if it exists, otherwise >0. */      
251  int      if (OpenClipboard (hwnd) == FALSE)  
252  file_exist_check (const char * fname)          return WPTERR_CLIP_OPEN;
253  {            EmptyClipboard ();
254      HANDLE fh;    
255        clipmem = GlobalAlloc (GHND, nbytes + 1);
256      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,      if (clipmem == NULL)
257                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );          BUG (NULL);
258      if( fh == INVALID_HANDLE_VALUE )      p = (char *) GlobalLock (clipmem);
259          return WPTERR_FILE_EXIST;      if (p == NULL) {
260      CloseHandle( fh );          CloseClipboard ();
261      return 0;          GlobalFree (clipmem);
262  } /* file_exist_check */          return WPTERR_GENERAL;
263        }
264        memcpy (p, text, nbytes);
265  int      p[nbytes] = '\0';
266  dir_exist_check( const char *dir )      
267  {      SetClipboardData (CF_TEXT, clipmem);
268      struct stat statbuf;          GlobalUnlock (clipmem);
269            CloseClipboard ();
270      if( stat( dir, &statbuf ) == -1 )      GlobalFree (clipmem);
271          return WPTERR_GENERAL;      
272      if( statbuf.st_mode & _S_IFDIR )      return rc;
273          return 0;  }
274      return WPTERR_GENERAL;  
275  } /* dir_exist_check */  
276    /* Append or prepend some text to the clipboard contents.
277       If as_footer = 1, append the text otherwise prepend. */
278  size_t  int
279  get_file_size( const char *fname )  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
280  {  {
281      size_t fsize;      char *p, *new_text;
282      HANDLE fh;  
283        p = get_clip_text (hwnd);
284      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,      if (!p)
285                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );          return WPTERR_CLIP_GET;
286      if( fh == INVALID_HANDLE_VALUE )      new_text = new char [strlen (p)+strlen (text)+8];
287          return 0;      if (!new_text)
288      fsize = GetFileSize( fh, NULL );          BUG (0);
289      if( fsize == 0xFFFFFFFF )      if (as_footer == 0)
290          fsize = 0;          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);
291      CloseHandle( fh );      else
292      return fsize;          sprintf (new_text, "%s\n%s\n\n", p, text);
293  } /* get_file_size */      set_clip_text (hwnd, new_text, strlen (new_text)+1);
294        free_if_alloc (p);
295        free_if_alloc (new_text);
296  int      return 0;
297  init_file_lock( LOCK *ctx, const char *file )  }
298  {  
299        
300      ctx->size = get_file_size( file );  /* Make a file name out of the path @path, the file @file and
301      ctx->file = m_strdup( file );     an extension. @ext.
302      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,     Return value: the full file name on success. */
303                           OPEN_ALWAYS, 0, NULL );  char*
304      if( ctx->fh == INVALID_HANDLE_VALUE )  make_filename (const char *path, const char *file, const char *ext)
305          return WPTERR_GENERAL;  {
306      if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {      char *p;
307          CloseHandle( ctx->fh );      size_t size = 0;
308          ctx->fh = INVALID_HANDLE_VALUE;  
309          ctx->size = 0;      if( path && *path )
310          free( ctx->file );          size += strlen( path );
311          return WPTERR_GENERAL;      if( file && *file )
312      }          size += strlen( file );
313      return 0;      if( ext && *ext )
314  } /* init_file_lock */          size += strlen( ext );
315        p = new char[size + 4];
316        memset( p, 0, size );
317  void      if( path ) {
318  release_file_lock( LOCK *ctx )          strcat( p, path );
319  {          if( path[strlen( path ) -1] != '\\' )
320      free_if_alloc( ctx->file );              strcat( p, "\\" );
321      ctx->file = NULL;      }
322      ctx->size = 0;      if( file )
323      CloseHandle( ctx->fh );          strcat( p, file );
324  } /* release_file_lock */      if( ext ) {
325            strcat( p, "." );
326            strcat( p, ext );
327  int      }
328  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,      return p;
329                                    LPARAM param, LPCTSTR title, int title_id )  }
330  {  
331      #ifndef LANG_DE  
332      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )  /* Generate a file name from a special dirctory. */
333          return -1;        char*
334      #else  make_special_filename (int folder, const char *file, const char *ext)
335      char strdesc[256];  {
336      LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );      BOOL ec;
337      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )      char path[MAX_PATH], *p;
338          return -1;      size_t n=0;
339      #endif  
340            /* MSDN: buf must be at least MAX_PATH=256 bytes */
341      return DialogBoxParam( hinst, name, parent, fnc, param );      ec = SHGetSpecialFolderPath (HWND_DESKTOP, path, folder, TRUE);
342  } /* dialog_box_param */      if (ec != 1) {
343            log_debug ("SHGetSpecialFolderPath() failed\r\n", (int)GetLastError ());
344            return NULL;
345  int      }
346  msg_box( HWND hwnd, const char *text, const char *title, int mode )  
347  {      n = strlen (path)+1;
348      mode |= MB_SETFOREGROUND;      if (file)
349      mode |= MB_TASKMODAL;          n += strlen (file)+1;
350      mode |= MB_TOPMOST;      if (ext)
351      return MessageBox(hwnd, text, title, mode);          n += strlen (ext)+1;
352  } /* msg_box */      p = new char[n+2];
353        if (!p)
354            BUG (0);
355  void      memset (p, 0, n+2);
356  set_active_window( HWND dlg )      strcpy (p, path);    
357  {            if (file) {
358      activ_hwnd = dlg;          strcat (p, "\\");
359  } /* set_active_window */          strcat (p, file);
360        }
361  void      if (ext)
362  reset_active_window( void )          strcat (p, ext);
363  {            return p;
364      activ_hwnd = NULL;  }
365  } /* reset_active_window */  
366    
367    /* return 0 if the file @fname exists, otherwise >0. */
368  static DWORD CALLBACK  int
369  reminder_thread( void *ctx )  file_exist_check (const char *fname)
370  {  {
371      reminder_ctx_s *c = (reminder_ctx_s *)ctx;      struct stat st;
372        if (stat (fname, &st) == -1)
373      Sleep( c->msecs );          return WPTERR_FILE_EXIST;
374      SetForegroundWindow( activ_hwnd );      return 0;
375    }
376      return 0;  
377  } /* reminder_thread */  
378    /* Check if the current folder exists.
379  HANDLE     Return 0 for success. */
380  window_reminder( struct reminder_ctx_s *ctx )  int
381  {  dir_exist_check (const char *dir)
382      DWORD tid = 0;  {
383            struct stat statbuf;    
384      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );      
385  } /* window_reminder */      if (stat (dir, &statbuf) == -1)
386            return WPTERR_GENERAL;
387        if (statbuf.st_mode & _S_IFDIR)
388  char *          return 0;
389  m_strdup (const char *str)      return WPTERR_GENERAL;
390  {  }
391      char * p = new char[strlen (str) + 1];  
392      if (p)  
393          strcpy (p, str);  /* Return the file size of the given file @fname. */
394      return p;  DWORD
395  } /* m_strdup */  get_file_size (const char *fname)
396    {
397        DWORD fsize;
398  void      HANDLE fh;
399  center_window2 (HWND hwndChild, HWND style)  
400  {          fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
401      HWND hwndParent;                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
402      RECT rChild, rParent;          if (fh == INVALID_HANDLE_VALUE)
403      HDC hdc;          return 0;
404      int wChild, hChild, wParent, hParent;          fsize = GetFileSize (fh, NULL);
405      int wScreen, hScreen, xNew, yNew;      if (fsize == 0xFFFFFFFF)
406      int flags = SWP_NOSIZE | SWP_NOZORDER;          fsize = 0;
407        CloseHandle (fh);
408      hwndParent = GetDesktopWindow ();      return fsize;
409      GetWindowRect (hwndChild, &rChild);      }
410      wChild = rChild.right - rChild.left;      
411      hChild = rChild.bottom - rChild.top;  
412    /* Start a dialog with the exception that before it is checked that the
413      GetWindowRect (hwndParent, &rParent);         dialog is not already openened. */
414      wParent = rParent.right - rParent.left;      int
415      hParent = rParent.bottom - rParent.top;        dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
416                          LPARAM param, LPCTSTR title, int title_id)
417      hdc = GetDC (hwndChild);      {
418      wScreen = GetDeviceCaps (hdc, HORZRES);          if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
419      hScreen = GetDeviceCaps (hdc, VERTRES);              return -1;
420      ReleaseDC (hwndChild, hdc);            return DialogBoxParam (hinst, name, parent, fnc, param);
421      xNew = rParent.left + ((wParent - wChild) /2);      }
422      if (xNew < 0)  
423          xNew = 0;  
424      else if ((xNew+wChild) > wScreen)  /* Wrapper for message box which forces the message box into the
425          xNew = wScreen - wChild;     foreground and it is displayed always on top. */
426      yNew = rParent.top  + ((hParent - hChild) /2);  int
427      if (yNew < 0)  msg_box (HWND hwnd, const char *text, const char *title, int mode)
428          yNew = 0;  {
429      else if ((yNew+hChild) > hScreen)      mode |= MB_SETFOREGROUND;
430          yNew = hScreen - hChild;      mode |= MB_TASKMODAL;
431      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)      mode |= MB_TOPMOST;
432          flags = SWP_NOMOVE | SWP_NOSIZE;      return MessageBox(hwnd, text, title, mode);
433      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);  }
434  }  
435    
436    /* Safe strdup version (C++ version). */
437  void  char*
438  center_window (HWND hwndChild)  m_strdup (const char *str)
439  {  {
440      center_window2 (hwndChild, NULL);      char *p = new char[strlen (str) + 1];
441  }      if (!p)
442            BUG (NULL);
443        strcpy (p, str);
444        return p;
445    }
446    
447    
448    /* Center the hwndChild relative to parent.
449       The style param allows to specificy additional styles (like topmost). */
450    void
451    center_window2 (HWND hwndChild, HWND parent, HWND style)
452    {    
453        HWND hwndParent;
454        RECT rChild, rParent;    
455        HDC hdc;
456        int wChild, hChild, wParent, hParent;    
457        int wScreen, hScreen, xNew, yNew;
458        int flags = SWP_NOSIZE | SWP_NOZORDER;
459    
460        hwndParent = parent;
461        if (hwndParent == NULL)
462            hwndParent = GetDesktopWindow ();
463        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;
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    /* Return TRUE if the current user has admin privileges. */
638    BOOL
639    user_is_admin (void)
640    {
641        SID_IDENTIFIER_AUTHORITY SystemSidAuthority = SECURITY_NT_AUTHORITY;
642        HANDLE hd;
643        TOKEN_GROUPS  *ptg = NULL;
644        DWORD ngtoken;
645        DWORD i;
646        BOOL admin = FALSE;
647        PSID psid = 0;
648    
649        if (GetVersion () & 0x80000000) /* Win9X */
650            return TRUE;
651    
652        if (!OpenThreadToken (GetCurrentThread (), TOKEN_QUERY, FALSE, &hd) &&
653            !OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &hd))
654            return FALSE;
655        
656        if (!GetTokenInformation (hd, TokenGroups, NULL, 0, &ngtoken) &&
657            GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
658            ptg = (TOKEN_GROUPS*)GlobalAlloc (GPTR, ngtoken);
659            if (!ptg)
660                return FALSE;
661    
662            if (!GetTokenInformation (hd, TokenGroups,
663                                      ptg, ngtoken, &ngtoken)) {
664                GlobalFree (ptg);
665                return FALSE;
666            }
667            AllocateAndInitializeSid (&SystemSidAuthority,
668                                      2, SECURITY_BUILTIN_DOMAIN_RID,
669                                      DOMAIN_ALIAS_RID_ADMINS,
670                                      0, 0, 0, 0, 0, 0,
671                                      &psid);
672            for (i = 0; i < ptg->GroupCount; i++) {
673                if (EqualSid (ptg->Groups[i].Sid, psid)) {
674                    admin = TRUE;
675                    break;
676                }
677            }
678            FreeSid (psid);
679            GlobalFree (ptg);
680        }
681    
682        CloseHandle (hd);
683        return admin;
684    }
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