/[winpt]/trunk/Src/wptW32API.cpp
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revision 2 by twoaday, Mon Jan 31 11:02:21 2005 UTC revision 355 by twoaday, Sat Dec 3 18:59:01 2011 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) 2001-2003, 2005-2006, 2009 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  #ifdef HAVE_CONFIG_H
17   * along with WinPT; if not, write to the Free Software Foundation,  #include <config.h>
18   * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA  #endif
19   */  
20    #include <windows.h>
21  #include <windows.h>  #include <stdio.h>
22  #include <stdio.h>  #include <sys/types.h>
23  #include <sys/types.h>  #include <sys/stat.h>
24  #include <sys/stat.h>  #include <shellapi.h>
25  #include <shellapi.h>  #include <shlobj.h>
26  #include <shlobj.h>  #include <commctrl.h>
27  #include <commctrl.h>  #include <time.h>
28    
29  #include "wptNLS.h"  #include "wptNLS.h"
30  #include "wptW32API.h"  #include "wptW32API.h"
31  #include "wptErrors.h"  #include "wptErrors.h"
32  #include "wptVersion.h"  #include "wptVersion.h"
33  #include "wptTypes.h"  #include "wptUTF8.h"
34    #include "wptTypes.h"
35    #include "StringBuffer.h"
36  /*  
37   * The the text of a menu item.  
38   */  extern "C" void _SHFree (void *p);
39  void  
40  set_menu_text (HMENU menu, int m_uid, const char *text)  
41  {  /* Insert a new item into the menu @hm at position @pos. */
42      MENUITEMINFO mii;  void
43      char menu_text[80];  insert_menu_item (HMENU hm, int pos, UINT m_id, const char *text)
44        {
45      memset (&mii, 0, sizeof (mii));      MENUITEMINFO mi;
46      mii.cbSize = sizeof (mii);  
47      mii.fMask = MIIM_TYPE;      memset (&mi, 0, sizeof mi);
48      mii.dwTypeData = menu_text;      mi.cbSize = sizeof mi;
49      mii.cch = sizeof (menu_text);      mi.fType = MF_STRING;
50      GetMenuItemInfo (menu, m_uid, FALSE, &mii);      mi.dwTypeData = (char *)text;
51            mi.cch = strlen (text);
52      memset (&mii, 0, sizeof mii);      mi.wID = m_id;
53      mii.cbSize = sizeof mii;      mi.fMask = MIIM_ID|MIIM_DATA| MIIM_TYPE;
54      mii.fMask = MIIM_TYPE;      InsertMenuItem (hm, pos, FALSE, &mi);
55      mii.fType = MFT_STRING;  }
56      mii.dwTypeData = (char *) text;  
57      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  
58  } /* set_menu_text */  static void
59    set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
60    {
61  void      MENUITEMINFO mii;
62  set_menu_state (HMENU menu, int m_uid, int state)      
63  {            memset (&mii, 0, sizeof mii);
64      MENUITEMINFO mii;      mii.cbSize = sizeof mii;
65        mii.fMask = MIIM_TYPE;
66      memset( &mii, 0, sizeof (mii) );      mii.fType = MFT_STRING;
67      mii.cbSize = sizeof (mii);      mii.dwTypeData = (char *) text;
68      mii.fMask = MIIM_STATE;      SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
69      mii.fState = state;  }
70      SetMenuItemInfo (menu, m_uid, FALSE, &mii);  
71  } /* set_menu_state */  
72    /* Set the text of a menu item @m_uid to @text. */
73    void
74    set_menu_text (HMENU menu, UINT m_uid, const char *text)
75  const char *  {
76  get_filename_dlg (HWND hwnd, int id, const char * title,      set_menu_text_ext (menu, 0, m_uid, text);
77                    const char * filter, const char * name)  }
78  {  
79      static char file[512] = "";  
80      OPENFILENAME open;  /* Set the text of a menu item with the position @pos to @text. */
81        void
82      if (name && strlen (name) < (sizeof (file)-1))  set_menu_text_bypos (HMENU menu, UINT pos, const char *text)
83          strcpy (file, name);  {
84      else      set_menu_text_ext (menu, 1, pos, text);
85          memset (file, 0, sizeof (file));  }
86      if (!filter)  
87          filter = _("All Files (*.*)\0*.*");  
88      memset (&open, 0, sizeof (open));  /* Set the state of a menu item @m_uid to @state. */
89      open.lStructSize = sizeof (OPENFILENAME);  void
90      open.hInstance = glob_hinst;  set_menu_state (HMENU menu, UINT m_uid, UINT state)
91      open.lpstrTitle = title;  {      
92      open.lpstrFilter = filter;      MENUITEMINFO mii;
93      open.hwndOwner = hwnd;  
94      open.lpstrFile = file;      memset (&mii, 0, sizeof (mii));
95      open.nMaxFile = sizeof (file) - 1;      mii.cbSize = sizeof (mii);
96      open.Flags = 0;      mii.fMask = MIIM_STATE;
97        mii.fState = state;
98      if (id == 0 && GetOpenFileName (&open))      SetMenuItemInfo (menu, m_uid, FALSE, &mii);
99          return open.lpstrFile;  }
100      else if (id == 1 && GetSaveFileName (&open))  
101          return open.lpstrFile;  
102        /* Retrieve the state of the menu item @m_uid and return it. */
103      return NULL;  UINT
104  } /* get_filename_dlg */  get_menu_state (HMENU menu, UINT m_uid)
105    {
106        MENUITEMINFO mii;
107  const char *  
108  get_folder_dlg (HWND hwnd, const char * title, const char * name)      memset (&mii, 0, sizeof (mii));
109  {      mii.cbSize = sizeof (mii);
110      static char folder[MAX_PATH] = "";      mii.fMask = MIIM_STATE;
111      BROWSEINFO bi;      GetMenuItemInfo (menu, m_uid, FALSE, &mii);
112      ITEMIDLIST * il;      return mii.fState;
113    }
114      memset (&bi, 0, sizeof (bi));  
115      bi.hwndOwner = hwnd;  
116      if (title)  enum {
117          bi.lpszTitle = title;      CDLG_FILE_OPEN = 0,
118      if (name && strlen (name) < MAX_PATH-1)      CDLG_FILE_SAVE = 1
119          strcpy (folder, name);  };
120      else  
121          memset (folder, 0, sizeof (folder));  /* Use the common dialog to request a file from the user.
122      il = SHBrowseForFolder (&bi);     id can be either FILE_OPEN or FILE_SAVE.
123      if (il) {     The return value is the file name or NULL if cancel was chosen. */
124          SHGetPathFromIDList (il, folder);  const char *
125          return folder;  get_filename_dlg (HWND hwnd, int id, const char *title,
126      }                    const char *filter, const char *name)
127      return NULL;  {
128  }      static char file[2*MAX_PATH+1] = "";
129        char _filter[512];
130        char workdir[MAX_PATH+1];
131  char*      char *sel_file = NULL;
132  get_clip_text (HWND hwnd)      OPENFILENAME open;
133  {      
134      HANDLE clipmem;      if (name && strlen (name) < (DIM (file)-1))
135      char *cliptxt, *p;            strcpy (file, name);
136      int len;      else
137                memset (file, 0, sizeof (file));
138      if (OpenClipboard (hwnd) == FALSE)      if (!filter) {      
139          return NULL;          strcpy (_filter, _("All Files (*.*)"));
140      clipmem = GetClipboardData (CF_TEXT);          memcpy (_filter+strlen (_filter)+1, "*.*\0\0", 5);
141      if (clipmem == NULL) {          filter = _filter;
142          p = NULL;      }
143          goto leave;  
144      }      GetCurrentDirectory (MAX_PATH, workdir);
145      cliptxt = (char *) GlobalLock (clipmem);      memset (&open, 0, sizeof (open));
146      if (cliptxt == NULL) {      open.lStructSize = sizeof (OPENFILENAME);
147          p = NULL;      open.hInstance = glob_hinst;
148          goto leave;      open.lpstrTitle = title;
149      }      open.lpstrFilter = filter;
150            open.hwndOwner = hwnd;
151      len =  strlen (cliptxt);      open.lpstrFile = file;
152      p = new char[len + 1];      open.nMaxFile = DIM (file) - 1;
153      if (!p)      if (id == CDLG_FILE_OPEN)
154          BUG (NULL);          open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
155      memcpy (p, cliptxt, len);      else
156      p[len] = '\0';          open.Flags = OFN_OVERWRITEPROMPT;
157      GlobalUnlock (clipmem);  
158            if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
159  leave:          sel_file = open.lpstrFile;
160      CloseClipboard ();      else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
161      return p;          sel_file = open.lpstrFile;
162  } /* get_clip_text */      SetCurrentDirectory (workdir);
163        
164        return sel_file;
165  int  }
166  set_clip_text (HWND hwnd, const char *text, int nbytes)  
167  {      const char*
168      HANDLE clipmem;  get_filesave_dlg (HWND hwnd, const char *title,
169      int rc = 0;                    const char *filter, const char *name)
170      char *p;  {
171            return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
172      if (OpenClipboard (hwnd) == FALSE)    }
173          return WPTERR_CLIP_OPEN;  
174      EmptyClipboard ();  const char*
175    get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
176      clipmem = GlobalAlloc (GHND, nbytes + 1);                    const char *name)
177      if (clipmem == NULL)  {
178          BUG (NULL);      return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
179      p = (char *) GlobalLock (clipmem);  }
180      if (p == NULL) {  
181          rc = WPTERR_GENERAL;;  
182          goto leave;      /* Use the common dialog to allow the user to select a folder.
183      }     The return value is either the folder path or NULL if cancel was chosen. */
184      memcpy (p, text, nbytes);  const char*
185      p[nbytes] = '\0';  get_folder_dlg (HWND hwnd, const char *title, const char *name)
186        {
187      GlobalUnlock (clipmem);      static char folder[2*MAX_PATH+1] = "";
188      SetClipboardData (CF_TEXT, clipmem);      BROWSEINFO bi;
189            ITEMIDLIST *il;
190  leave:  
191      CloseClipboard ();      memset (&bi, 0, sizeof (bi));
192      return rc;      bi.hwndOwner = hwnd;
193  } /* set_clip_text */      if (title)
194            bi.lpszTitle = title;
195        if (name && strlen (name) < MAX_PATH-1)
196  int          strcpy (folder, name);
197  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int head_foot)      else
198  {          memset (folder, 0, sizeof (folder));
199      char *p, *new_text;      il = SHBrowseForFolder (&bi);
200        if (il != NULL) {
201      p = get_clip_text (hwnd);          SHGetPathFromIDList (il, folder);
202      if (!p)          _SHFree (il);
203          return WPTERR_CLIP_GET;          return folder;
204      new_text = new char [strlen (p)+strlen (text)+8];      }
205      if (!new_text)      return NULL;
206          BUG (0);  }
207      if (head_foot == 0)  
208          sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);  
209      else  /* Return the clipboard contents as a string or NULL
210          sprintf (new_text, "%s\n%s\n\n", p, text);     if the clipboard does not contain text. */
211      set_clip_text (hwnd, new_text, strlen (new_text)+1);  char*
212      free_if_alloc (p);  get_clip_text (HWND hwnd)
213      free_if_alloc (new_text);  {
214      return 0;      HANDLE clipmem;
215  }      char *cliptxt, *p;  
216        int len;
217        
218  char*      if (OpenClipboard (hwnd) == FALSE)
219  make_filename( const char *path, const char *file, const char *ext )          return NULL;
220  {      clipmem = GetClipboardData (CF_TEXT);
221      char *p;      if (clipmem == NULL) {
222      size_t size = 0;          p = NULL;
223            goto leave;
224      if( path && *path )      }
225          size += strlen( path );      cliptxt = (char *) GlobalLock (clipmem);
226      if( file && *file )      if (cliptxt == NULL) {
227          size += strlen( file );          p = NULL;
228      if( ext && *ext )          goto leave;
229          size += strlen( ext );      }
230      p = new char[size + 4];      
231      memset( p, 0, size );      len =  strlen (cliptxt);
232      if( path ) {      p = new char[len + 1];
233          strcat( p, path );      if (!p)
234          if( path[strlen( path ) -1] != '\\' )          BUG (NULL);
235              strcat( p, "\\" );      memcpy (p, cliptxt, len);
236      }      p[len] = '\0';
237      if( file )      GlobalUnlock (clipmem);
238          strcat( p, file );      
239      if( ext ) {  leave:
240          strcat( p, "." );      CloseClipboard ();
241          strcat( p, ext );      return p;
242      }  }
243      return p;  
244  } /* make_filename */  
245    /* Set @text as the new clipboard content. */
246    int
247  /* return 0 if it exists, otherwise >0. */  set_clip_text (HWND hwnd, const char *text, int nbytes)
248  int  {    
249  file_exist_check (const char * fname)      HANDLE clipmem;
250  {            int rc = 0;
251      HANDLE fh;        char *p;
252        
253      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,      if (OpenClipboard (hwnd) == FALSE)  
254                       NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );          return WPTERR_CLIP_OPEN;
255      if( fh == INVALID_HANDLE_VALUE )      EmptyClipboard ();
256          return WPTERR_FILE_EXIST;  
257      CloseHandle( fh );      clipmem = GlobalAlloc (GHND, nbytes + 1);
258      return 0;      if (clipmem == NULL)
259  } /* file_exist_check */          BUG (NULL);
260        p = (char *) GlobalLock (clipmem);
261        if (p == NULL) {
262  int          CloseClipboard ();
263  dir_exist_check( const char *dir )          GlobalFree (clipmem);
264  {          return WPTERR_GENERAL;
265      struct stat statbuf;          }
266            memcpy (p, text, nbytes);
267      if( stat( dir, &statbuf ) == -1 )      p[nbytes] = '\0';
268          return WPTERR_GENERAL;      
269      if( statbuf.st_mode & _S_IFDIR )      SetClipboardData (CF_TEXT, clipmem);
270          return 0;      GlobalUnlock (clipmem);
271      return WPTERR_GENERAL;      CloseClipboard ();
272  } /* dir_exist_check */      GlobalFree (clipmem);
273        
274        return rc;
275  size_t  }
276  get_file_size( const char *fname )  
277  {  
278      size_t fsize;  /* Append or prepend some text to the clipboard contents.
279      HANDLE fh;     If as_footer = 1, append the text otherwise prepend. */
280    int
281      fh = CreateFile( fname, GENERIC_READ, FILE_SHARE_READ,  set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
282                      NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL );  {
283      if( fh == INVALID_HANDLE_VALUE )      const char *fmt;
284          return 0;      char *p, *new_text;
285      fsize = GetFileSize( fh, NULL );  
286      if( fsize == 0xFFFFFFFF )      p = get_clip_text (hwnd);
287          fsize = 0;      if (!p)
288      CloseHandle( fh );          return WPTERR_CLIP_GET;
289      return fsize;      if (as_footer == 0)
290  } /* get_file_size */          fmt = "%s\r\n%s\r\n\r\n";
291        else
292            fmt = "%s\n%s\n\n";
293  int      new_text = new char [strlen (p)+strlen (text)+strlen (fmt)+2];
294  init_file_lock( LOCK *ctx, const char *file )      if (!new_text)
295  {          BUG (0);
296            if (as_footer == 0)
297      ctx->size = get_file_size( file );          sprintf (new_text, fmt, text, p);
298      ctx->file = m_strdup( file );      else
299      ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,          sprintf (new_text, fmt, p, text);
300                           OPEN_ALWAYS, 0, NULL );      set_clip_text (hwnd, new_text, strlen (new_text)+1);
301      if( ctx->fh == INVALID_HANDLE_VALUE )      free_if_alloc (p);
302          return WPTERR_GENERAL;      free_if_alloc (new_text);
303      if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {      return 0;
304          CloseHandle( ctx->fh );  }
305          ctx->fh = INVALID_HANDLE_VALUE;  
306          ctx->size = 0;  
307          free( ctx->file );  /* Make a file name out of the path @path, the file @file and
308          return WPTERR_GENERAL;     an extension. @ext.
309      }     Return value: the full file name on success. */
310      return 0;  char*
311  } /* init_file_lock */  make_filename (const char *path, const char *file, const char *ext)
312    {
313        char *p;
314  void      size_t size = 0;
315  release_file_lock( LOCK *ctx )  
316  {      if (path && *path)
317      free_if_alloc( ctx->file );          size += strlen (path);
318      ctx->file = NULL;      if (file && *file)
319      ctx->size = 0;          size += strlen (file);
320      CloseHandle( ctx->fh );      if (ext && *ext)
321  } /* release_file_lock */          size += strlen (ext);
322        p = new char[size + 4];
323        if (!p)
324  int          BUG (0);
325  dialog_box_param( HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,      memset (p, 0, size);
326                                    LPARAM param, LPCTSTR title, int title_id )      if (path) {
327  {          strcat (p, path);
328  #ifndef LANG_DE          if (path[strlen (path) -1] != '\\')
329      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, title ) )              strcat (p, "\\");
330          return -1;            }
331  #else      if (file != NULL)
332      char strdesc[256];          strcat (p, file);
333      LoadString( glob_hinst, title_id, strdesc, sizeof (strdesc) -1 );      if (ext != NULL) {
334      if( FindWindowEx( GetDesktopWindow(), NULL, NULL, strdesc ) )          strcat (p, ".");
335          return -1;          strcat (p, ext);
336  #endif      }
337            return p;
338      return DialogBoxParam( hinst, name, parent, fnc, param );  }
339  } /* dialog_box_param */  
340    
341    /* Generates a file name from a special dirctory. */
342  int  char*
343  msg_box( HWND hwnd, const char *text, const char *title, int mode )  make_special_filename (int folder, const char *file, const char *ext)
344  {  {
345      mode |= MB_SETFOREGROUND;      BOOL ec;
346      mode |= MB_TASKMODAL;      char path[MAX_PATH+1], *p;
347      mode |= MB_TOPMOST;      size_t n=0;
348      return MessageBox(hwnd, text, title, mode);  
349  } /* msg_box */      /* MSDN: buf must be at least MAX_PATH=256 bytes */
350        ec = SHGetSpecialFolderPath (HWND_DESKTOP, path, folder, TRUE);
351        if (ec != 1) {
352  void          log_debug ("SHGetSpecialFolderPath() failed\r\n", (int)GetLastError ());
353  set_active_window( HWND dlg )          return NULL;
354  {            }
355      activ_hwnd = dlg;  
356  } /* set_active_window */      n = strlen (path)+1;
357        if (file)
358  void          n += strlen (file)+1;
359  reset_active_window( void )      if (ext)
360  {                n += strlen (ext)+1;
361      activ_hwnd = NULL;      p = new char[n+2];
362  } /* reset_active_window */      if (!p)
363            BUG (0);
364        memset (p, 0, n+2);
365  static DWORD CALLBACK      strcpy (p, path);    
366  reminder_thread( void *ctx )      if (file) {
367  {          strcat (p, "\\");
368      reminder_ctx_s *c = (reminder_ctx_s *)ctx;          strcat (p, file);
369        }
370      Sleep( c->msecs );      if (ext)
371      SetForegroundWindow( activ_hwnd );          strcat (p, ext);
372        return p;
373      return 0;  }
374  } /* reminder_thread */  
375    
376  HANDLE  /* return 0 if the file @fname exists, otherwise >0. */
377  window_reminder( struct reminder_ctx_s *ctx )  int
378  {  file_exist_check (const char *fname)
379      DWORD tid = 0;  {
380            struct stat st;
381      return CreateThread( NULL, 0, reminder_thread, ctx, 0, &tid );      if (stat (fname, &st) == -1)
382  } /* window_reminder */          return WPTERR_FILE_EXIST;
383        return 0;
384    }
385  char *  
386  m_strdup( const char *str )  
387  {  /* Check if the current folder exists.
388      char * p = new char[strlen( str ) + 1];     Return 0 for success. */
389      if( p )  int
390          strcpy( p, str );  dir_exist_check (const char *dir)
391      return p;  {
392  } /* m_strdup */      struct stat statbuf;    
393        
394        if (stat (dir, &statbuf) == -1)
395  void          return WPTERR_GENERAL;
396  center_window2 (HWND hwndChild, HWND style)      if (statbuf.st_mode & _S_IFDIR)
397  {              return 0;
398      HWND hwndParent;      return WPTERR_GENERAL;
399      RECT rChild, rParent;      }
400      HDC hdc;  
401      int wChild, hChild, wParent, hParent;      
402      int wScreen, hScreen, xNew, yNew;  /* Return the file size of the given file @fname. */
403      int flags = SWP_NOSIZE | SWP_NOZORDER;  DWORD
404    get_file_size (const char *fname)
405      hwndParent = GetDesktopWindow ();  {
406      GetWindowRect (hwndChild, &rChild);          DWORD fsize;
407      wChild = rChild.right - rChild.left;          HANDLE fh;
408      hChild = rChild.bottom - rChild.top;  
409        fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
410      GetWindowRect (hwndParent, &rParent);                           NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
411      wParent = rParent.right - rParent.left;          if (fh == INVALID_HANDLE_VALUE)
412      hParent = rParent.bottom - rParent.top;                return 0;
413            fsize = GetFileSize (fh, NULL);
414      hdc = GetDC (hwndChild);          if (fsize == 0xFFFFFFFF)
415      wScreen = GetDeviceCaps (hdc, HORZRES);              fsize = 0;
416      hScreen = GetDeviceCaps (hdc, VERTRES);          CloseHandle (fh);
417      ReleaseDC (hwndChild, hdc);            return fsize;
418      xNew = rParent.left + ((wParent - wChild) /2);      }
419      if (xNew < 0)  
420          xNew = 0;  
421      else if ((xNew+wChild) > wScreen)  /* Start a dialog with the exception that before it is checked that the
422          xNew = wScreen - wChild;     dialog is not already openened. */
423      yNew = rParent.top  + ((hParent - hChild) /2);  int
424      if (yNew < 0)  dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
425          yNew = 0;                    LPARAM param, LPCTSTR title, int title_id)
426      else if ((yNew+hChild) > hScreen)  {
427          yNew = hScreen - hChild;      if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
428      if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)          return -1;
429          flags = SWP_NOMOVE | SWP_NOSIZE;      return DialogBoxParam (hinst, name, parent, fnc, param);
430      SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);  }
431                      
432  }  
433    /* Wrapper for message box which forces the message box into the
434       foreground and it is displayed always on top. */
435  void  int
436  center_window (HWND hwndChild)  msg_box (HWND hwnd, const char *text, const char *title, int mode)
437  {  {
438      center_window2 (hwndChild, NULL);      mode |= MB_SETFOREGROUND;
439  }      mode |= MB_TASKMODAL;
440        mode |= MB_TOPMOST;
441        return MessageBox(hwnd, text, title, mode);
442    }
443    
444    
445    /* Center the hwndChild relative to parent.
446       The style param allows to specificy additional styles (like topmost). */
447    void
448    center_window2 (HWND hwndChild, HWND parent, HWND style)
449    {    
450        HWND hwndParent;
451        RECT rChild, rParent;    
452        HDC hdc;
453        int wChild, hChild, wParent, hParent;    
454        int wScreen, hScreen, xNew, yNew;
455        int flags = SWP_NOSIZE | SWP_NOZORDER;
456    
457        hwndParent = parent;
458        if (hwndParent == NULL)
459            hwndParent = GetDesktopWindow ();
460        GetWindowRect (hwndChild, &rChild);    
461        wChild = rChild.right - rChild.left;    
462        hChild = rChild.bottom - rChild.top;
463    
464        GetWindowRect (hwndParent, &rParent);    
465        wParent = rParent.right - rParent.left;    
466        hParent = rParent.bottom - rParent.top;      
467        
468        hdc = GetDC (hwndChild);    
469        wScreen = GetDeviceCaps (hdc, HORZRES);    
470        hScreen = GetDeviceCaps (hdc, VERTRES);    
471        ReleaseDC (hwndChild, hdc);      
472        xNew = rParent.left + ((wParent - wChild) /2);    
473        if (xNew < 0)
474            xNew = 0;
475        else if ((xNew+wChild) > wScreen)
476            xNew = wScreen - wChild;
477        yNew = rParent.top  + ((hParent - hChild) /2);
478        if (yNew < 0)
479            yNew = 0;
480        else if ((yNew+hChild) > hScreen)
481            yNew = hScreen - hChild;
482        if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)
483            flags = SWP_NOMOVE | SWP_NOSIZE;
484        SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
485    }
486    
487    
488    /* Center the given hwndChild window with no special style. */
489    void
490    center_window (HWND child, HWND parent)
491    {
492        center_window2 (child, parent, NULL);
493    }
494    
495    
496    
497    
498    /* Return date in a format which complies with the
499       locale user settings. */
500    const char*
501    get_locale_date (long tm_t, char *buf, DWORD buflen)
502    {
503        SYSTEMTIME st;
504        struct tm *ptm;
505    
506        ptm = localtime (&tm_t);
507        memset (&st, 0, sizeof (st));
508        st.wYear = (WORD)ptm->tm_year+1900;
509        st.wMonth = (WORD)ptm->tm_mon+1;
510        st.wDay = (WORD)ptm->tm_mday;
511        if (!GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st,
512                            NULL, buf, buflen))
513            return NULL;
514        return buf;
515    }
516    
517    /* Return the time in a format which complies with the locale user
518       settings. */
519    const char*
520    get_locale_time (long tm_t, char *buf, DWORD buflen)
521    {
522        SYSTEMTIME st;
523        struct tm *ptm;
524    
525        ptm = localtime (&tm_t);
526        memset (&st, 0, sizeof (st));
527        st.wMinute = (WORD)ptm->tm_min;
528        st.wHour = (WORD)ptm->tm_hour;
529        st.wSecond = (WORD)ptm->tm_sec;
530    
531        if (!GetTimeFormat (LOCALE_USER_DEFAULT, TIME_FORCE24HOURFORMAT, &st,
532                            NULL, buf, buflen))
533            return NULL;
534        return buf;
535    }
536    
537    
538    /* Return a combination of date+time which complies to the
539       local user settings. */
540    const char*
541    get_locale_timedate (long tm_t, char *buf, DWORD buflen)
542    {
543        DWORD nleft = buflen;
544    
545        if (!get_locale_date (tm_t, buf, buflen))
546            return NULL;
547        nleft -= strlen (buf)+1;
548        if (nleft < 1)
549            return NULL;
550        strcat (buf, " ");
551        nleft--;
552        if (!get_locale_time (tm_t, buf+strlen (buf), nleft))
553            return NULL;
554        return buf;
555    }
556    
557    
558    /* Generate a temporary file name by using the users
559       temp path and optionally a name @name provided by the caller.
560       Return value: 0 on success. */
561    int
562    get_temp_name (char *buf, DWORD buflen, const char *name)
563    {
564        char tmp[32];
565    
566        
567        if (!name) {
568            _snprintf (tmp, DIM (tmp)-1, "%08lX", GetTickCount ());
569            name = tmp;
570        }
571    
572        if (!GetTempPath (buflen - strlen (name) -2, buf)) {
573            log_debug ("GetTempPath() failed ec=%d\n", (int)GetLastError ());
574            return -1;
575        }
576    
577        strcat (buf, name);
578        return 0;
579    }
580    
581    
582    void
583    ListBox_AddString_utf8 (HWND lb, const char *txt)
584    {
585        char *utf8_txt;
586    
587        utf8_txt = utf8_to_native (txt);
588        SendMessage (lb, LB_ADDSTRING, 0, (LPARAM)(LPCSTR)(utf8_txt));
589        safe_free (utf8_txt);
590    }
591    
592    
593    void
594    ComboBox_AddString_utf8 (HWND cb, const char *txt)
595    {
596        char *utf8_txt;
597    
598        utf8_txt = utf8_to_native (txt);
599        SendMessage ((cb), CB_ADDSTRING, 0, (LPARAM)(LPCSTR)(utf8_txt));
600        safe_free (utf8_txt);
601    }
602    
603    
604    /* GetDlgItemText replacement with UTF8 support. */
605    int
606    GetDlgItemText_utf8 (HWND dlg, int id, char **r_txt)
607    {
608        int len = GetWindowTextLength (GetDlgItem (dlg, id));
609        char *txt;
610    
611        *r_txt = NULL;
612        if (len < 1)
613            return 0;
614        txt = new char[len+2];
615        if (!txt)
616            BUG (NULL);
617        GetDlgItemText (dlg, id, txt, len+1);
618        *r_txt = native_to_utf8 (txt);
619        free_if_alloc (txt);
620        return len;
621    }
622    
623    int
624    html_help_show (int map_id)
625    {
626        STARTUPINFO si;
627        PROCESS_INFORMATION pi;
628        SECURITY_ATTRIBUTES sec_attr;
629        char path[2*MAX_PATH+1];
630        
631        memset (&sec_attr, 0, sizeof (sec_attr));
632        memset (&si, 0, sizeof (si));
633        si.cb = sizeof (STARTUPINFO);
634        memset (&pi, 0, sizeof (pi));
635        //hh.exe -mapid 40 "winpt.$lang.chm"
636        
637        _snprintf (path, 2*MAX_PATH, "hh.exe -mapid %d winpt.%s.chm",
638                   map_id, gettext_get_langid ());
639        CreateProcess (NULL, path, &sec_attr, &sec_attr,
640                       FALSE, 0, NULL, NULL, &si, &pi);
641        CloseHandle (pi.hProcess);
642        CloseHandle (pi.hThread);
643        return 0;
644    }
645                      
646      
647    /* Return TRUE if the current user has admin privileges. */
648    BOOL
649    user_is_admin (void)
650    {
651        SID_IDENTIFIER_AUTHORITY SystemSidAuthority = SECURITY_NT_AUTHORITY;
652        HANDLE hd;
653        TOKEN_GROUPS  *ptg = NULL;
654        DWORD ngtoken;
655        DWORD i;
656        BOOL admin = FALSE;
657        PSID psid = 0;
658    
659        if (!OpenThreadToken (GetCurrentThread (), TOKEN_QUERY, FALSE, &hd) &&
660            !OpenProcessToken (GetCurrentProcess (), TOKEN_QUERY, &hd))
661            return FALSE;
662        
663        if (!GetTokenInformation (hd, TokenGroups, NULL, 0, &ngtoken) &&
664            GetLastError() == ERROR_INSUFFICIENT_BUFFER) {
665            ptg = (TOKEN_GROUPS*)GlobalAlloc (GPTR, ngtoken);
666            if (!ptg)
667                return FALSE;
668    
669            if (!GetTokenInformation (hd, TokenGroups, ptg, ngtoken, &ngtoken)) {
670                GlobalFree (ptg);
671                return FALSE;
672            }
673            AllocateAndInitializeSid (&SystemSidAuthority,
674                                      2, SECURITY_BUILTIN_DOMAIN_RID,
675                                      DOMAIN_ALIAS_RID_ADMINS,
676                                      0, 0, 0, 0, 0, 0,
677                                      &psid);
678            for (i = 0; i < ptg->GroupCount; i++) {
679                if (EqualSid (ptg->Groups[i].Sid, psid)) {
680                    admin = TRUE;
681                    break;
682                }
683            }
684            FreeSid (psid);
685            GlobalFree (ptg);
686        }
687    
688        CloseHandle (hd);
689        return admin;
690    }
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