trunk/Src/wptW32API.cpp

/* wptW32API.cpp - Common W32 API functions
 *      Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz
 *
 * This file is part of WinPT.
 *
 * WinPT is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * WinPT is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <windows.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <shellapi.h>
#include <shlobj.h>
#include <commctrl.h>
#include <time.h>

#include "wptNLS.h"
#include "wptW32API.h"
#include "wptErrors.h"
#include "wptVersion.h"
#include "wptTypes.h"


extern "C" void _SHFree (void *p);


static void
set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
{
    MENUITEMINFO mii;
    
    memset (&mii, 0, sizeof mii);
    mii.cbSize = sizeof mii;
    mii.fMask = MIIM_TYPE;
    mii.fType = MFT_STRING;
    mii.dwTypeData = (char *) text;
    SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
}


/* Set the text of a menu item @m_uid to @text. */
void
set_menu_text (HMENU menu, UINT m_uid, const char *text)
{
    set_menu_text_ext (menu, 0, m_uid, text);
}


/* Set the text of a menu item with the position @pos to @text. */
void
set_menu_text_bypos (HMENU menu, UINT pos, const char *text)
{
    set_menu_text_ext (menu, 1, pos, text);
}


/* Set the state of a menu item @m_uid to @state. */
void
set_menu_state (HMENU menu, UINT m_uid, UINT state)
{       
    MENUITEMINFO mii;

    memset (&mii, 0, sizeof (mii));
    mii.cbSize = sizeof (mii);
    mii.fMask = MIIM_STATE;
    mii.fState = state;
    SetMenuItemInfo (menu, m_uid, FALSE, &mii);
}


/* Retrieve the state of the menu item @m_uid and return it. */
UINT
get_menu_state (HMENU menu, UINT m_uid)
{
    MENUITEMINFO mii;

    memset (&mii, 0, sizeof (mii));
    mii.cbSize = sizeof (mii);
    mii.fMask = MIIM_STATE;
    GetMenuItemInfo (menu, m_uid, FALSE, &mii);
    return mii.fState;
}


enum {
    CDLG_FILE_OPEN = 0,
    CDLG_FILE_SAVE = 1
};

/* Use the common dialog to request a file from the user. 
   id can be either FILE_OPEN or FILE_SAVE. 
   The return value is the file name or NULL if cancel was chosen. */
const char *
get_filename_dlg (HWND hwnd, int id, const char * title, 
                  const char * filter, const char * name)
{
    static char file[512] = "";
    OPENFILENAME open;
    
    if (name && strlen (name) < (sizeof (file)-1))
        strcpy (file, name);
    else
        memset (file, 0, sizeof (file));
    if (!filter)
        filter = _("All Files (*.*)\0*.*\0\0");
    /* XXX: problem with gettext because of the 'artificial' 
            double string termination!. */
    memset (&open, 0, sizeof (open));
    open.lStructSize = sizeof (OPENFILENAME);
    open.hInstance = glob_hinst;
    open.lpstrTitle = title;
    open.lpstrFilter = filter;
    open.hwndOwner = hwnd;
    open.lpstrFile = file;
    open.nMaxFile = sizeof (file) - 1;
    if (id == CDLG_FILE_OPEN)
        open.Flags = OFN_FILEMUSTEXIST|OFN_PATHMUSTEXIST;
    else
        open.Flags = OFN_OVERWRITEPROMPT;

    if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
        return open.lpstrFile;
    else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
        return open.lpstrFile;
    
    return NULL;
}

const char*
get_filesave_dlg (HWND hwnd, const char *title,
                  const char *filter, const char *name)
{
    return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
}

const char*
get_fileopen_dlg (HWND hwnd, const char *title, const char *filter,
                  const char *name)
{
    return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
}


/* Use the common dialog to allow the user to select a folder.
   The return value is either the folder path or NULL if cancel was chosen. */
const char*
get_folder_dlg (HWND hwnd, const char *title, const char *name)
{
    static char folder[MAX_PATH+1] = "";
    BROWSEINFO bi;
    ITEMIDLIST *il;

    memset (&bi, 0, sizeof (bi));
    bi.hwndOwner = hwnd;
    if (title)
        bi.lpszTitle = title;
    if (name && strlen (name) < MAX_PATH-1)
        strcpy (folder, name);
    else
        memset (folder, 0, sizeof (folder));
    il = SHBrowseForFolder (&bi);
    if (il) {
        SHGetPathFromIDList (il, folder);
        _SHFree (il);
        return folder;
    }
    return NULL;
}


/* Return the clipboard contents as a string or NULL
   if the clipboard does not contain text. */
char*
get_clip_text (HWND hwnd)
{
    HANDLE clipmem;
    char *cliptxt, *p;  
    int len;
    
    if (OpenClipboard (hwnd) == FALSE)
        return NULL;
    clipmem = GetClipboardData (CF_TEXT);
    if (clipmem == NULL) {
        p = NULL;
        goto leave;
    }
    cliptxt = (char *) GlobalLock (clipmem);
    if (cliptxt == NULL) {
        p = NULL;
        goto leave;
    }
    
    len =  strlen (cliptxt);
    p = new char[len + 1];
    if (!p)
        BUG (NULL);
    memcpy (p, cliptxt, len);
    p[len] = '\0';
    GlobalUnlock (clipmem);
    
leave:
    CloseClipboard ();
    return p;
}


/* Set @text as the new clipboard content. */
int
set_clip_text (HWND hwnd, const char *text, int nbytes)
{    
    HANDLE clipmem;
    int rc = 0;
    char *p;
    
    if (OpenClipboard (hwnd) == FALSE)  
        return WPTERR_CLIP_OPEN;
    EmptyClipboard ();

    clipmem = GlobalAlloc (GHND, nbytes + 1);
    if (clipmem == NULL)
        BUG (NULL);
    p = (char *) GlobalLock (clipmem);
    if (p == NULL) {
        rc = WPTERR_GENERAL;;
        goto leave;     
    }
    memcpy (p, text, nbytes);
    p[nbytes] = '\0';
    
    GlobalUnlock (clipmem);
    SetClipboardData (CF_TEXT, clipmem);
    
leave:
    CloseClipboard ();
    return rc;
} /* set_clip_text */


/* Append or prepend some text to the clipboard contents.
   If as_footer = 1, append the text otherwise prepend. */
int
set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
{
    char *p, *new_text;

    p = get_clip_text (hwnd);
    if (!p)
        return WPTERR_CLIP_GET;
    new_text = new char [strlen (p)+strlen (text)+8];
    if (!new_text)
        BUG (0);
    if (as_footer == 0)
        sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);
    else
        sprintf (new_text, "%s\n%s\n\n", p, text);
    set_clip_text (hwnd, new_text, strlen (new_text)+1);
    free_if_alloc (p);
    free_if_alloc (new_text);
    return 0;
}


/* Make a file name out of the path @path, the file @file and 
   an extension. @ext.
   Return value: the full file name on success. */
char*
make_filename (const char *path, const char *file, const char *ext)
{
    char *p;
    size_t size = 0;

    if( path && *path )
        size += strlen( path );
    if( file && *file )
        size += strlen( file );
    if( ext && *ext )
        size += strlen( ext );
    p = new char[size + 4];
    memset( p, 0, size );
    if( path ) {
        strcat( p, path );
        if( path[strlen( path ) -1] != '\\' )
            strcat( p, "\\" );
    }
    if( file )
        strcat( p, file );
    if( ext ) {
        strcat( p, "." );
        strcat( p, ext );
    }
    return p;
}


/* return 0 if the file @fname exists, otherwise >0. */
int
file_exist_check (const char *fname)
{
    struct stat st;
    if (stat (fname, &st) == -1)
        return WPTERR_FILE_EXIST;
    return 0;
}


/* Check if the current folder exists.
   Return 0 for success. */
int
dir_exist_check (const char *dir)
{
    struct stat statbuf;    
    
    if (stat (dir, &statbuf) == -1)
        return WPTERR_GENERAL;
    if (statbuf.st_mode & _S_IFDIR)
        return 0;
    return WPTERR_GENERAL;
}


/* Return the file size of the given file @fname. */
DWORD
get_file_size (const char *fname)
{
    DWORD fsize;
    HANDLE fh;

    fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
                     NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
    if (fh == INVALID_HANDLE_VALUE)
        return 0;
    fsize = GetFileSize (fh, NULL);
    if (fsize == 0xFFFFFFFF)
        fsize = 0;
    CloseHandle (fh);
    return fsize;
}


int
init_file_lock( LOCK *ctx, const char *file )
{
    
    ctx->size = get_file_size( file );
    ctx->file = m_strdup( file );
    ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL, 
                         OPEN_ALWAYS, 0, NULL );
    if( ctx->fh == INVALID_HANDLE_VALUE )
        return WPTERR_GENERAL;
    if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {
        CloseHandle( ctx->fh );
        ctx->fh = INVALID_HANDLE_VALUE;
        ctx->size = 0;
        free( ctx->file );
        return WPTERR_GENERAL;
    }
    return 0;
} /* init_file_lock */


void
release_file_lock( LOCK *ctx )
{
    free_if_alloc( ctx->file );
    ctx->file = NULL;
    ctx->size = 0;
    CloseHandle( ctx->fh );
} /* release_file_lock */


/* Start a dialog with the exception that before it is checked that the
   dialog is not already openened. */
int
dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc, 
                  LPARAM param, LPCTSTR title, int title_id)
{
    if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
        return -1;
    return DialogBoxParam (hinst, name, parent, fnc, param);
}


/* Wrapper for message box which forces the message box into the
   foreground and it is displayed always on top. */
int
msg_box (HWND hwnd, const char *text, const char *title, int mode)
{
    mode |= MB_SETFOREGROUND;
    mode |= MB_TASKMODAL;
    mode |= MB_TOPMOST;
    return MessageBox(hwnd, text, title, mode);
}


/* Safe strdup version (C++ version). */
char*
m_strdup (const char *str)
{
    char *p = new char[strlen (str) + 1];
    if (!p)
        BUG (NULL);
    strcpy (p, str);
    return p;
}


/* Center the hwndChild relative to parent.
   The style param allows to specificy additional styles (like topmost). */
void
center_window2 (HWND hwndChild, HWND parent, HWND style) 
{     
    HWND hwndParent;
    RECT rChild, rParent;    
    HDC hdc;
    int wChild, hChild, wParent, hParent;     
    int wScreen, hScreen, xNew, yNew;
    int flags = SWP_NOSIZE | SWP_NOZORDER;

    hwndParent = parent;
    if (hwndParent == NULL)
        hwndParent = GetDesktopWindow ();
    GetWindowRect (hwndChild, &rChild);     
    wChild = rChild.right - rChild.left;     
    hChild = rChild.bottom - rChild.top;

    GetWindowRect (hwndParent, &rParent);     
    wParent = rParent.right - rParent.left;     
    hParent = rParent.bottom - rParent.top;      
    
    hdc = GetDC (hwndChild);     
    wScreen = GetDeviceCaps (hdc, HORZRES);     
    hScreen = GetDeviceCaps (hdc, VERTRES);     
    ReleaseDC (hwndChild, hdc);      
    xNew = rParent.left + ((wParent - wChild) /2);     
    if (xNew < 0)
        xNew = 0;
    else if ((xNew+wChild) > wScreen) 
        xNew = wScreen - wChild;
    yNew = rParent.top  + ((hParent - hChild) /2);
    if (yNew < 0)
        yNew = 0;
    else if ((yNew+hChild) > hScreen)
        yNew = hScreen - hChild;
    if (style == HWND_TOPMOST || style == HWND_NOTOPMOST)
        flags = SWP_NOMOVE | SWP_NOSIZE;
    SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
}


/* Center the given hwndChild window with no special style. */
void
center_window (HWND hwndChild, HWND hwndParent) 
{
    center_window2 (hwndChild, hwndParent, NULL);
}


/* Retrieve the product verion of the given file @fname.
   Format: MAJOR.MINOR.PATCH1.PATCH2
   Return value: 0 on success. */
int
get_file_version (const char *fname, WORD *major, WORD *minor, 
                  WORD *patch1, WORD *patch2)
{
    VS_FIXEDFILEINFO *inf = {0};
    char file[MAX_PATH+1] = {0};
    LPVOID buf, data;
    DWORD arg;
    DWORD size;
    UINT qlen;

    strncpy (file, fname, MAX_PATH);
    size = GetFileVersionInfoSize (file, &arg);
    if (!size)
        return -1;
    buf = (LPVOID)new CHAR[size];
    if (!buf)
        BUG (NULL);
    GetFileVersionInfo (file, 0, size, buf);

    qlen=0;
    VerQueryValue (buf, "\\", &data, &qlen);
    if (!qlen) {
        delete [] (char*)buf;
        return -1;
    }
    inf = (VS_FIXEDFILEINFO*)data;

    if (major)
        *major = HIWORD (inf->dwProductVersionMS);
    if (minor)
        *minor = LOWORD (inf->dwProductVersionMS);
    if (patch1)
        *patch1 = HIWORD (inf->dwProductVersionLS);     
    if (patch2)
        *patch2 = LOWORD (inf->dwProductVersionLS);

    delete [] (char*)buf;
    return 0;
}


/* Return date in a format which complies with the
   system locale settings. */
const char*
get_locale_date (long tm_t, char *buf, DWORD buflen)
{ 
    SYSTEMTIME st; 
    struct tm *ptm;

    ptm = localtime (&tm_t);  
    st.wYear = (WORD)ptm->tm_year;
    st.wMonth = (WORD)ptm->tm_mon;
    st.wDay = (WORD)ptm->tm_mday;
    st.wYear += 1900;
    st.wMonth += 1;
    if (!GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st, 
                        NULL, buf, buflen))
        return NULL;
    return buf;
}


struct reminder_hd_s {
    int msecs;
    HWND dlg;
    HANDLE hd;
};


static DWORD CALLBACK
foreground_reminder_thread (void *c)
{
    struct reminder_hd_s *ctx = (struct reminder_hd_s *)c;
    Sleep (ctx->msecs);
    SetForegroundWindow (ctx->dlg);
    CloseHandle (ctx->hd);
    delete ctx;
    ExitThread (0);
    return 0;
}

/* Try to force the window @dlg to the foreground.
   On NT5 or later this will not work if the user
   is working in another window (console for example). */
void
force_foreground_window (HWND dlg, int msecs)
{
    struct reminder_hd_s *hd;
    DWORD tid;

    hd = new reminder_hd_s;
    hd->dlg = dlg;
    hd->msecs = msecs;
    hd->hd = CreateThread (NULL, 0, foreground_reminder_thread, 
                           hd, NULL, &tid);
}
1	/* wptW32API.cpp - Common W32 API functions
2	* Copyright (C) 2001, 2002, 2003, 2005 Timo Schulz
3	*
4	* This file is part of WinPT.
5	*
6	* 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
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* WinPT is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with WinPT; if not, write to the Free Software Foundation,
18	* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
19	*/
20
21	#ifdef HAVE_CONFIG_H
22	#include <config.h>
23	#endif
24
25	#include <windows.h>
26	#include <stdio.h>
27	#include <sys/types.h>
28	#include <sys/stat.h>
29	#include <shellapi.h>
30	#include <shlobj.h>
31	#include <commctrl.h>
32	#include <time.h>
33
34	#include "wptNLS.h"
35	#include "wptW32API.h"
36	#include "wptErrors.h"
37	#include "wptVersion.h"
38	#include "wptTypes.h"
39
40
41	extern "C" void _SHFree (void *p);
42
43
44	static void
45	set_menu_text_ext (HMENU menu, int by_pos, int m_uid, const char *text)
46	{
47	MENUITEMINFO mii;
48
49	memset (&mii, 0, sizeof mii);
50	mii.cbSize = sizeof mii;
51	mii.fMask = MIIM_TYPE;
52	mii.fType = MFT_STRING;
53	mii.dwTypeData = (char *) text;
54	SetMenuItemInfo (menu, m_uid, by_pos? TRUE : FALSE, &mii);
55	}
56
57
58	/* Set the text of a menu item @m_uid to @text. */
59	void
60	set_menu_text (HMENU menu, UINT m_uid, const char *text)
61	{
62	set_menu_text_ext (menu, 0, m_uid, text);
63	}
64
65
66	/* Set the text of a menu item with the position @pos to @text. */
67	void
68	set_menu_text_bypos (HMENU menu, UINT pos, const char *text)
69	{
70	set_menu_text_ext (menu, 1, pos, text);
71	}
72
73
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	{
78	MENUITEMINFO mii;
79
80	memset (&mii, 0, sizeof (mii));
81	mii.cbSize = sizeof (mii);
82	mii.fMask = MIIM_STATE;
83	mii.fState = state;
84	SetMenuItemInfo (menu, m_uid, FALSE, &mii);
85	}
86
87
88	/* Retrieve the state of the menu item @m_uid and return it. */
89	UINT
90	get_menu_state (HMENU menu, UINT m_uid)
91	{
92	MENUITEMINFO mii;
93
94	memset (&mii, 0, sizeof (mii));
95	mii.cbSize = sizeof (mii);
96	mii.fMask = MIIM_STATE;
97	GetMenuItemInfo (menu, m_uid, FALSE, &mii);
98	return mii.fState;
99	}
100
101
102	enum {
103	CDLG_FILE_OPEN = 0,
104	CDLG_FILE_SAVE = 1
105	};
106
107	/* Use the common dialog to request a file from the user.
108	id can be either FILE_OPEN or FILE_SAVE.
109	The return value is the file name or NULL if cancel was chosen. */
110	const char *
111	get_filename_dlg (HWND hwnd, int id, const char * title,
112	const char * filter, const char * name)
113	{
114	static char file[512] = "";
115	OPENFILENAME open;
116
117	if (name && strlen (name) < (sizeof (file)-1))
118	strcpy (file, name);
119	else
120	memset (file, 0, sizeof (file));
121	if (!filter)
122	filter = _("All Files (.)\0.\0\0");
123	/* XXX: problem with gettext because of the 'artificial'
124	double string termination!. */
125	memset (&open, 0, sizeof (open));
126	open.lStructSize = sizeof (OPENFILENAME);
127	open.hInstance = glob_hinst;
128	open.lpstrTitle = title;
129	open.lpstrFilter = filter;
130	open.hwndOwner = hwnd;
131	open.lpstrFile = file;
132	open.nMaxFile = sizeof (file) - 1;
133	if (id == CDLG_FILE_OPEN)
134	open.Flags = OFN_FILEMUSTEXIST\|OFN_PATHMUSTEXIST;
135	else
136	open.Flags = OFN_OVERWRITEPROMPT;
137
138	if (id == CDLG_FILE_OPEN && GetOpenFileName (&open))
139	return open.lpstrFile;
140	else if (id == CDLG_FILE_SAVE && GetSaveFileName (&open))
141	return open.lpstrFile;
142
143	return NULL;
144	}
145
146	const char*
147	get_filesave_dlg (HWND hwnd, const char *title,
148	const char filter, const char name)
149	{
150	return get_filename_dlg (hwnd, CDLG_FILE_SAVE, title, filter, name);
151	}
152
153	const char*
154	get_fileopen_dlg (HWND hwnd, const char title, const char filter,
155	const char *name)
156	{
157	return get_filename_dlg (hwnd, CDLG_FILE_OPEN, title, filter, name);
158	}
159
160
161	/* Use the common dialog to allow the user to select a folder.
162	The return value is either the folder path or NULL if cancel was chosen. */
163	const char*
164	get_folder_dlg (HWND hwnd, const char title, const char name)
165	{
166	static char folder[MAX_PATH+1] = "";
167	BROWSEINFO bi;
168	ITEMIDLIST *il;
169
170	memset (&bi, 0, sizeof (bi));
171	bi.hwndOwner = hwnd;
172	if (title)
173	bi.lpszTitle = title;
174	if (name && strlen (name) < MAX_PATH-1)
175	strcpy (folder, name);
176	else
177	memset (folder, 0, sizeof (folder));
178	il = SHBrowseForFolder (&bi);
179	if (il) {
180	SHGetPathFromIDList (il, folder);
181	_SHFree (il);
182	return folder;
183	}
184	return NULL;
185	}
186
187
188	/* Return the clipboard contents as a string or NULL
189	if the clipboard does not contain text. */
190	char*
191	get_clip_text (HWND hwnd)
192	{
193	HANDLE clipmem;
194	char cliptxt, p;
195	int len;
196
197	if (OpenClipboard (hwnd) == FALSE)
198	return NULL;
199	clipmem = GetClipboardData (CF_TEXT);
200	if (clipmem == NULL) {
201	p = NULL;
202	goto leave;
203	}
204	cliptxt = (char *) GlobalLock (clipmem);
205	if (cliptxt == NULL) {
206	p = NULL;
207	goto leave;
208	}
209
210	len = strlen (cliptxt);
211	p = new char[len + 1];
212	if (!p)
213	BUG (NULL);
214	memcpy (p, cliptxt, len);
215	p[len] = '\0';
216	GlobalUnlock (clipmem);
217
218	leave:
219	CloseClipboard ();
220	return p;
221	}
222
223
224	/* Set @text as the new clipboard content. */
225	int
226	set_clip_text (HWND hwnd, const char *text, int nbytes)
227	{
228	HANDLE clipmem;
229	int rc = 0;
230	char *p;
231
232	if (OpenClipboard (hwnd) == FALSE)
233	return WPTERR_CLIP_OPEN;
234	EmptyClipboard ();
235
236	clipmem = GlobalAlloc (GHND, nbytes + 1);
237	if (clipmem == NULL)
238	BUG (NULL);
239	p = (char *) GlobalLock (clipmem);
240	if (p == NULL) {
241	rc = WPTERR_GENERAL;;
242	goto leave;
243	}
244	memcpy (p, text, nbytes);
245	p[nbytes] = '\0';
246
247	GlobalUnlock (clipmem);
248	SetClipboardData (CF_TEXT, clipmem);
249
250	leave:
251	CloseClipboard ();
252	return rc;
253	} /* set_clip_text */
254
255
256	/* Append or prepend some text to the clipboard contents.
257	If as_footer = 1, append the text otherwise prepend. */
258	int
259	set_clip_text2 (HWND hwnd, const char *text, int nbytes, int as_footer)
260	{
261	char p, new_text;
262
263	p = get_clip_text (hwnd);
264	if (!p)
265	return WPTERR_CLIP_GET;
266	new_text = new char [strlen (p)+strlen (text)+8];
267	if (!new_text)
268	BUG (0);
269	if (as_footer == 0)
270	sprintf (new_text, "%s\r\n%s\r\n\r\n", text, p);
271	else
272	sprintf (new_text, "%s\n%s\n\n", p, text);
273	set_clip_text (hwnd, new_text, strlen (new_text)+1);
274	free_if_alloc (p);
275	free_if_alloc (new_text);
276	return 0;
277	}
278
279
280	/* Make a file name out of the path @path, the file @file and
281	an extension. @ext.
282	Return value: the full file name on success. */
283	char*
284	make_filename (const char path, const char file, const char *ext)
285	{
286	char *p;
287	size_t size = 0;
288
289	if( path && *path )
290	size += strlen( path );
291	if( file && *file )
292	size += strlen( file );
293	if( ext && *ext )
294	size += strlen( ext );
295	p = new char[size + 4];
296	memset( p, 0, size );
297	if( path ) {
298	strcat( p, path );
299	if( path[strlen( path ) -1] != '\\' )
300	strcat( p, "\\" );
301	}
302	if( file )
303	strcat( p, file );
304	if( ext ) {
305	strcat( p, "." );
306	strcat( p, ext );
307	}
308	return p;
309	}
310
311
312	/* return 0 if the file @fname exists, otherwise >0. */
313	int
314	file_exist_check (const char *fname)
315	{
316	struct stat st;
317	if (stat (fname, &st) == -1)
318	return WPTERR_FILE_EXIST;
319	return 0;
320	}
321
322
323	/* Check if the current folder exists.
324	Return 0 for success. */
325	int
326	dir_exist_check (const char *dir)
327	{
328	struct stat statbuf;
329
330	if (stat (dir, &statbuf) == -1)
331	return WPTERR_GENERAL;
332	if (statbuf.st_mode & _S_IFDIR)
333	return 0;
334	return WPTERR_GENERAL;
335	}
336
337
338	/* Return the file size of the given file @fname. */
339	DWORD
340	get_file_size (const char *fname)
341	{
342	DWORD fsize;
343	HANDLE fh;
344
345	fh = CreateFile (fname, GENERIC_READ, FILE_SHARE_READ,
346	NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
347	if (fh == INVALID_HANDLE_VALUE)
348	return 0;
349	fsize = GetFileSize (fh, NULL);
350	if (fsize == 0xFFFFFFFF)
351	fsize = 0;
352	CloseHandle (fh);
353	return fsize;
354	}
355
356
357	int
358	init_file_lock( LOCK ctx, const char file )
359	{
360
361	ctx->size = get_file_size( file );
362	ctx->file = m_strdup( file );
363	ctx->fh = CreateFile( file, GENERIC_READ, FILE_SHARE_READ, NULL,
364	OPEN_ALWAYS, 0, NULL );
365	if( ctx->fh == INVALID_HANDLE_VALUE )
366	return WPTERR_GENERAL;
367	if( LockFile( ctx->fh, 0, 0, ctx->size, 0 ) == FALSE ) {
368	CloseHandle( ctx->fh );
369	ctx->fh = INVALID_HANDLE_VALUE;
370	ctx->size = 0;
371	free( ctx->file );
372	return WPTERR_GENERAL;
373	}
374	return 0;
375	} /* init_file_lock */
376
377
378	void
379	release_file_lock( LOCK *ctx )
380	{
381	free_if_alloc( ctx->file );
382	ctx->file = NULL;
383	ctx->size = 0;
384	CloseHandle( ctx->fh );
385	} /* release_file_lock */
386
387
388	/* Start a dialog with the exception that before it is checked that the
389	dialog is not already openened. */
390	int
391	dialog_box_param (HINSTANCE hinst, LPCTSTR name, HWND parent, DLGPROC fnc,
392	LPARAM param, LPCTSTR title, int title_id)
393	{
394	if (FindWindowEx (GetDesktopWindow (), NULL, NULL, title))
395	return -1;
396	return DialogBoxParam (hinst, name, parent, fnc, param);
397	}
398
399
400	/* Wrapper for message box which forces the message box into the
401	foreground and it is displayed always on top. */
402	int
403	msg_box (HWND hwnd, const char text, const char title, int mode)
404	{
405	mode \|= MB_SETFOREGROUND;
406	mode \|= MB_TASKMODAL;
407	mode \|= MB_TOPMOST;
408	return MessageBox(hwnd, text, title, mode);
409	}
410
411
412	/* Safe strdup version (C++ version). */
413	char*
414	m_strdup (const char *str)
415	{
416	char *p = new char[strlen (str) + 1];
417	if (!p)
418	BUG (NULL);
419	strcpy (p, str);
420	return p;
421	}
422
423
424	/* Center the hwndChild relative to parent.
425	The style param allows to specificy additional styles (like topmost). */
426	void
427	center_window2 (HWND hwndChild, HWND parent, HWND style)
428	{
429	HWND hwndParent;
430	RECT rChild, rParent;
431	HDC hdc;
432	int wChild, hChild, wParent, hParent;
433	int wScreen, hScreen, xNew, yNew;
434	int flags = SWP_NOSIZE \| SWP_NOZORDER;
435
436	hwndParent = parent;
437	if (hwndParent == NULL)
438	hwndParent = GetDesktopWindow ();
439	GetWindowRect (hwndChild, &rChild);
440	wChild = rChild.right - rChild.left;
441	hChild = rChild.bottom - rChild.top;
442
443	GetWindowRect (hwndParent, &rParent);
444	wParent = rParent.right - rParent.left;
445	hParent = rParent.bottom - rParent.top;
446
447	hdc = GetDC (hwndChild);
448	wScreen = GetDeviceCaps (hdc, HORZRES);
449	hScreen = GetDeviceCaps (hdc, VERTRES);
450	ReleaseDC (hwndChild, hdc);
451	xNew = rParent.left + ((wParent - wChild) /2);
452	if (xNew < 0)
453	xNew = 0;
454	else if ((xNew+wChild) > wScreen)
455	xNew = wScreen - wChild;
456	yNew = rParent.top + ((hParent - hChild) /2);
457	if (yNew < 0)
458	yNew = 0;
459	else if ((yNew+hChild) > hScreen)
460	yNew = hScreen - hChild;
461	if (style == HWND_TOPMOST \|\| style == HWND_NOTOPMOST)
462	flags = SWP_NOMOVE \| SWP_NOSIZE;
463	SetWindowPos (hwndChild, style? style : NULL, xNew, yNew, 0, 0, flags);
464	}
465
466
467	/* Center the given hwndChild window with no special style. */
468	void
469	center_window (HWND hwndChild, HWND hwndParent)
470	{
471	center_window2 (hwndChild, hwndParent, NULL);
472	}
473
474
475	/* Retrieve the product verion of the given file @fname.
476	Format: MAJOR.MINOR.PATCH1.PATCH2
477	Return value: 0 on success. */
478	int
479	get_file_version (const char fname, WORD major, WORD *minor,
480	WORD patch1, WORD patch2)
481	{
482	VS_FIXEDFILEINFO *inf = {0};
483	char file[MAX_PATH+1] = {0};
484	LPVOID buf, data;
485	DWORD arg;
486	DWORD size;
487	UINT qlen;
488
489	strncpy (file, fname, MAX_PATH);
490	size = GetFileVersionInfoSize (file, &arg);
491	if (!size)
492	return -1;
493	buf = (LPVOID)new CHAR[size];
494	if (!buf)
495	BUG (NULL);
496	GetFileVersionInfo (file, 0, size, buf);
497
498	qlen=0;
499	VerQueryValue (buf, "\\", &data, &qlen);
500	if (!qlen) {
501	delete [] (char*)buf;
502	return -1;
503	}
504	inf = (VS_FIXEDFILEINFO*)data;
505
506	if (major)
507	*major = HIWORD (inf->dwProductVersionMS);
508	if (minor)
509	*minor = LOWORD (inf->dwProductVersionMS);
510	if (patch1)
511	*patch1 = HIWORD (inf->dwProductVersionLS);
512	if (patch2)
513	*patch2 = LOWORD (inf->dwProductVersionLS);
514
515	delete [] (char*)buf;
516	return 0;
517	}
518
519
520	/* Return date in a format which complies with the
521	system locale settings. */
522	const char*
523	get_locale_date (long tm_t, char *buf, DWORD buflen)
524	{
525	SYSTEMTIME st;
526	struct tm *ptm;
527
528	ptm = localtime (&tm_t);
529	st.wYear = (WORD)ptm->tm_year;
530	st.wMonth = (WORD)ptm->tm_mon;
531	st.wDay = (WORD)ptm->tm_mday;
532	st.wYear += 1900;
533	st.wMonth += 1;
534	if (!GetDateFormat (LOCALE_USER_DEFAULT, DATE_SHORTDATE, &st,
535	NULL, buf, buflen))
536	return NULL;
537	return buf;
538	}
539
540
541	struct reminder_hd_s {
542	int msecs;
543	HWND dlg;
544	HANDLE hd;
545	};
546
547
548	static DWORD CALLBACK
549	foreground_reminder_thread (void *c)
550	{
551	struct reminder_hd_s ctx = (struct reminder_hd_s )c;
552	Sleep (ctx->msecs);
553	SetForegroundWindow (ctx->dlg);
554	CloseHandle (ctx->hd);
555	delete ctx;
556	ExitThread (0);
557	return 0;
558	}
559
560	/* Try to force the window @dlg to the foreground.
561	On NT5 or later this will not work if the user
562	is working in another window (console for example). */
563	void
564	force_foreground_window (HWND dlg, int msecs)
565	{
566	struct reminder_hd_s *hd;
567	DWORD tid;
568
569	hd = new reminder_hd_s;
570	hd->dlg = dlg;
571	hd->msecs = msecs;
572	hd->hd = CreateThread (NULL, 0, foreground_reminder_thread,
573	hd, NULL, &tid);
574	}