[wxWidgets.git] / src / tiff / tif_os2.c

/* $Header$ */

/*
 * Copyright (c) 1988-1997 Sam Leffler
 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
 *
 * modifed for use with OS/2 by David Webster
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Sam Leffler and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Sam Leffler and Silicon Graphics.
 *
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

/*
 * TIFF Library OS/2-specific Routines.  Adapted from tif_win32.c 2/16/00 by
 * David Webster (dwebster@bhmi.com), Baldwin, Hackett, and Meeks, Inc., Omaha, NE USA
 */
#define INCL_PM
#define INCL_BASE
#include <os2.h>
#include <stdio.h>
#include <stdlib.h>
#include "tiffiop.h"

/* Some windows datatypes */

typedef ULONG DWORD;
typedef ULONG HANDLE;
typedef PCHAR LPTSTR;
typedef const PCHAR LPCTSTR;
typedef CHAR TCHAR;
#define GlobalAlloc(a,b) malloc(b)
#define LocalAlloc(a,b) malloc(b)
#define GlobalFree(b) free(b)
#define LocalFree(b) free(b)
#define GlobalReAlloc(p, s, t) realloc(p, s)
#define CopyMemory(p, v, s) memcpy(p, v, s)
#define FillMemory(p, c, s) memset(p, c, s)
#define GlobalSize(p) sizeof(p)
#define wsprintf sprintf
#define wvsprintf vsprintf
#define lstrlen strlen

static tsize_t LINKAGEMODE
_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
{
	DWORD dwSizeRead;
	if (!DosRead((HFILE)fd, buf, size, &dwSizeRead))
		return(0);
	return ((tsize_t) dwSizeRead);
}

static tsize_t LINKAGEMODE
_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
{
	DWORD dwSizeWritten;
	if (!DosWrite((HFILE)fd, buf, size, &dwSizeWritten))
		return(0);
	return ((tsize_t) dwSizeWritten);
}

static toff_t LINKAGEMODE
_tiffSeekProc(thandle_t fd, toff_t off, int whence)
{
	DWORD dwMoveMethod;
    ULONG ibActual;
	switch(whence)
	{
	case 0:
		dwMoveMethod = FILE_BEGIN;
		break;
	case 1:
		dwMoveMethod = FILE_CURRENT;
		break;
	case 2:
		dwMoveMethod = FILE_END;
		break;
	default:
		dwMoveMethod = FILE_BEGIN;
		break;
	}
	DosSetFilePtr((HFILE)fd, off, dwMoveMethod, &ibActual);
 return((toff_t)ibActual);
}

static int LINKAGEMODE
_tiffCloseProc(thandle_t fd)
{
	return (DosClose((HFILE)fd) ? 0 : -1);
}

static toff_t LINKAGEMODE
_tiffSizeProc(thandle_t fd)
{
   FILESTATUS3    vStatus;

   DosQueryFileInfo((HFILE)fd, FIL_STANDARD, &vStatus, sizeof(FILESTATUS3));
   return (vStatus.cbFile);
}

static int LINKAGEMODE
_tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
	return (0);
}

/*
 * From "Hermann Josef Hill" <lhill@rhein-zeitung.de>:
 *
 * Windows uses both a handle and a pointer for file mapping,
 * but according to the SDK documentation and Richter's book
 * "Advanced Windows Programming" it is safe to free the handle
 * after obtaining the file mapping pointer
 *
 * This removes a nasty OS dependency and cures a problem
 * with Visual C++ 5.0
 */
static int LINKAGEMODE
_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
{
    return(0);
}

static void LINKAGEMODE
_tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
{
}

static void LINKAGEMODE
_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
{
}

/*
 * Open a TIFF file descriptor for read/writing.
 * Note that TIFFFdOpen and TIFFOpen recognise the character 'u' in the mode
 * string, which forces the file to be opened unmapped.
 */
TIFF*
TIFFFdOpen(int ifd, const char* name, const char* mode)
{
	TIFF* tif;
	BOOL fSuppressMap = (mode[1] == 'u' || mode[2] == 'u');

	tif = TIFFClientOpen(name, mode,
		 (thandle_t)ifd,
	    _tiffReadProc, _tiffWriteProc,
	    _tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
		 fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
		 fSuppressMap ? _tiffDummyUnmapProc : _tiffUnmapProc);
	if (tif)
		tif->tif_fd = ifd;
	return (tif);
}

/*
 * Open a TIFF file for read/writing.
 */
TIFF*
TIFFOpen(const char* name, const char* mode)
{
	static const char module[] = "TIFFOpen";
	thandle_t fd;
	int m;
	DWORD dwOpenMode;
 DWORD dwOpenFlags;
 DWORD dwAction;
 APIRET ulrc;

	m = _TIFFgetMode(mode, module);

	switch(m)
	{
	case O_RDONLY:
		dwOpenMode = OPEN_ACCESS_READONLY;
		dwOpenFlags = OPEN_ACTION_FAIL_IF_NEW;
		break;
	case O_RDWR:
		dwOpenMode = OPEN_ACCESS_READWRITE;
		dwOpenFlags = OPEN_ACTION_FAIL_IF_NEW;
		break;
	case O_RDWR|O_CREAT:
		dwOpenMode = OPEN_ACCESS_READWRITE;
		dwOpenFlags = OPEN_ACTION_CREATE_IF_NEW;
		break;
	case O_RDWR|O_TRUNC:
		dwOpenMode = OPEN_ACCESS_READWRITE;
		dwOpenFlags = OPEN_ACTION_FAIL_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS;
		break;
	case O_RDWR|O_CREAT|O_TRUNC:
		dwOpenMode = OPEN_ACCESS_READWRITE;
		dwOpenFlags = OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_REPLACE_IF_EXISTS;
		break;
	default:
		return ((TIFF*)0);
	}
 ulrc = DosOpen( name, (HFILE*)&fd, &dwAction, FILE_ARCHIVED|FILE_NORMAL
                ,1000L, dwOpenFlags, dwOpenMode, NULL
               );
	if (fd != NO_ERROR) {
		TIFFError(module, "%s: Cannot open", name);
		return ((TIFF *)0);
	}
	return (TIFFFdOpen((int)fd, name, mode));
}

tdata_t
_TIFFmalloc(tsize_t s)
{
	return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));
}

void
_TIFFfree(tdata_t p)
{
	GlobalFree(p);
	return;
}

tdata_t
_TIFFrealloc(tdata_t p, tsize_t s)
{
	void* pvTmp;
	if ((pvTmp = GlobalReAlloc(p, s, 0)) == NULL) {
		if ((pvTmp = GlobalAlloc(sGMEM_FIXED, s)) != NULL) {
			CopyMemory(pvTmp, p, GlobalSize(p));
			GlobalFree(p);
		}
	}
	return ((tdata_t)pvTmp);
}

void
_TIFFmemset(void* p, int v, tsize_t c)
{
	FillMemory(p, c, (BYTE)v);
}

void
_TIFFmemcpy(void* d, const tdata_t s, tsize_t c)
{
	CopyMemory(d, s, c);
}

int
_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
{
	register const *pb1 = (const int*)p1;
	register const *pb2 = (const int*)p2;
	register DWORD dwTmp = c;
	register int iTmp;
	for (iTmp = 0; dwTmp-- && !iTmp; iTmp = (int)*pb1++ - (int)*pb2++)
		;
	return (iTmp);
}

static void LINKAGEMODE
Os2WarningHandler(const char* module, const char* fmt, va_list ap)
{
#ifndef TIF_PLATFORM_CONSOLE
	LPTSTR szTitle;
	LPTSTR szTmp;
	LPCTSTR szTitleText = "%s Warning";
	LPCTSTR szDefaultModule = "TIFFLIB";
	szTmp = (module == NULL) ? (LPTSTR)szDefaultModule : (LPTSTR)module;
	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (lstrlen(szTmp) +
			lstrlen(szTitleText) + lstrlen(fmt) + 128)*sizeof(TCHAR))) == NULL)
		return;
	wsprintf(szTitle, szTitleText, szTmp);
	szTmp = szTitle + (lstrlen(szTitle)+2)*sizeof(TCHAR);
	wvsprintf(szTmp, fmt, ap);
	WinMessageBox( HWND_DESKTOP
               ,WinQueryFocus(HWND_DESKTOP)
               ,szTmp
               ,szTitle
               ,0
               ,MB_OK | MB_INFORMATION
              );
	LocalFree(szTitle);
	return;
#else
	if (module != NULL)
		fprintf(stderr, "%s: ", module);
	fprintf(stderr, "Warning, ");
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, ".\n");
#endif
}
TIFFErrorHandler _TIFFwarningHandler = Os2WarningHandler;

static void LINKAGEMODE
Os2ErrorHandler(const char* module, const char* fmt, va_list ap)
{
#ifndef TIF_PLATFORM_CONSOLE
	LPTSTR szTitle;
	LPTSTR szTmp;
	LPCTSTR szTitleText = "%s Error";
	LPCTSTR szDefaultModule = "TIFFLIB";
	szTmp = (module == NULL) ? (LPTSTR)szDefaultModule : (LPTSTR)module;
	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (lstrlen(szTmp) +
			lstrlen(szTitleText) + lstrlen(fmt) + 128)*sizeof(TCHAR))) == NULL)
		return;
	wsprintf(szTitle, szTitleText, szTmp);
	szTmp = szTitle + (lstrlen(szTitle)+2)*sizeof(TCHAR);
	wvsprintf(szTmp, fmt, ap);
	WinMessageBox( HWND_DESKTOP
               ,WinQueryFocus(HWND_DESKTOP)
               ,szTmp
               ,szTitle
               ,0
               ,MB_OK | MB_ICONEXCLAMATION
              );
	LocalFree(szTitle);
	return;
#else
	if (module != NULL)
		fprintf(stderr, "%s: ", module);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, ".\n");
#endif
}
TIFFErrorHandler _TIFFerrorHandler = Os2ErrorHandler;
Commit	Line	Data
615a9936 DW	1	/* $Header$ */
	2
	3	/*
	4	* Copyright (c) 1988-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
	7	* modifed for use with OS/2 by David Webster
	8	*
	9	* Permission to use, copy, modify, distribute, and sell this software and
	10	* its documentation for any purpose is hereby granted without fee, provided
	11	* that (i) the above copyright notices and this permission notice appear in
	12	* all copies of the software and related documentation, and (ii) the names of
	13	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	14	* publicity relating to the software without the specific, prior written
	15	* permission of Sam Leffler and Silicon Graphics.
	16	*
	17	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	18	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	19	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	20	*
	21	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	22	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	23	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	24	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	25	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	26	* OF THIS SOFTWARE.
	27	*/
	28
	29	/*
	30	* TIFF Library OS/2-specific Routines. Adapted from tif_win32.c 2/16/00 by
	31	* David Webster (dwebster@bhmi.com), Baldwin, Hackett, and Meeks, Inc., Omaha, NE USA
	32	*/
	33	#define INCL_PM
	34	#define INCL_BASE
	35	#include <os2.h>
	36	#include <stdio.h>
	37	#include <stdlib.h>
	38	#include "tiffiop.h"
	39
	40	/* Some windows datatypes */
	41
	42	typedef ULONG DWORD;
	43	typedef ULONG HANDLE;
	44	typedef PCHAR LPTSTR;
	45	typedef const PCHAR LPCTSTR;
	46	typedef CHAR TCHAR;
	47	#define GlobalAlloc(a,b) malloc(b)
	48	#define LocalAlloc(a,b) malloc(b)
	49	#define GlobalFree(b) free(b)
	50	#define LocalFree(b) free(b)
	51	#define GlobalReAlloc(p, s, t) realloc(p, s)
	52	#define CopyMemory(p, v, s) memcpy(p, v, s)
	53	#define FillMemory(p, c, s) memset(p, c, s)
	54	#define GlobalSize(p) sizeof(p)
	55	#define wsprintf sprintf
	56	#define wvsprintf vsprintf
	57	#define lstrlen strlen
	58
	59	static tsize_t LINKAGEMODE
	60	_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)
	61	{
	62	DWORD dwSizeRead;
	63	if (!DosRead((HFILE)fd, buf, size, &dwSizeRead))
	64	return(0);
65	return ((tsize_t) dwSizeRead);
66	}
67
68	static tsize_t LINKAGEMODE
69	_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)
70	{
71	DWORD dwSizeWritten;
72	if (!DosWrite((HFILE)fd, buf, size, &dwSizeWritten))
73	return(0);
74	return ((tsize_t) dwSizeWritten);
75	}
76
77	static toff_t LINKAGEMODE
78	_tiffSeekProc(thandle_t fd, toff_t off, int whence)
79	{
80	DWORD dwMoveMethod;
81	ULONG ibActual;
82	switch(whence)
83	{
84	case 0:
85	dwMoveMethod = FILE_BEGIN;
86	break;
87	case 1:
88	dwMoveMethod = FILE_CURRENT;
89	break;
90	case 2:
91	dwMoveMethod = FILE_END;
92	break;
93	default:
94	dwMoveMethod = FILE_BEGIN;
95	break;
96	}
97	DosSetFilePtr((HFILE)fd, off, dwMoveMethod, &ibActual);
98	return((toff_t)ibActual);
99	}
100
101	static int LINKAGEMODE
102	_tiffCloseProc(thandle_t fd)
103	{
104	return (DosClose((HFILE)fd) ? 0 : -1);
105	}
106
107	static toff_t LINKAGEMODE
108	_tiffSizeProc(thandle_t fd)
109	{
110	FILESTATUS3 vStatus;
111
112	DosQueryFileInfo((HFILE)fd, FIL_STANDARD, &vStatus, sizeof(FILESTATUS3));
113	return (vStatus.cbFile);
114	}
115
116	static int LINKAGEMODE
117	_tiffDummyMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
118	{
119	return (0);
120	}
121
122	/*
123	* From "Hermann Josef Hill" <lhill@rhein-zeitung.de>:
124	*
125	* Windows uses both a handle and a pointer for file mapping,
126	* but according to the SDK documentation and Richter's book
127	* "Advanced Windows Programming" it is safe to free the handle
128	* after obtaining the file mapping pointer
129	*
130	* This removes a nasty OS dependency and cures a problem
131	* with Visual C++ 5.0
132	*/
133	static int LINKAGEMODE
134	_tiffMapProc(thandle_t fd, tdata_t* pbase, toff_t* psize)
135	{
136	return(0);
137	}
138
139	static void LINKAGEMODE
140	_tiffDummyUnmapProc(thandle_t fd, tdata_t base, toff_t size)
141	{
142	}
143
144	static void LINKAGEMODE
145	_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)
146	{
147	}
148
149	/*
150	* Open a TIFF file descriptor for read/writing.
151	* Note that TIFFFdOpen and TIFFOpen recognise the character 'u' in the mode
152	* string, which forces the file to be opened unmapped.
153	*/
154	TIFF*
155	TIFFFdOpen(int ifd, const char* name, const char* mode)
156	{
157	TIFF* tif;
158	BOOL fSuppressMap = (mode[1] == 'u' \|\| mode[2] == 'u');
159
160	tif = TIFFClientOpen(name, mode,
161	(thandle_t)ifd,
162	_tiffReadProc, _tiffWriteProc,
163	_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
164	fSuppressMap ? _tiffDummyMapProc : _tiffMapProc,
165	fSuppressMap ? _tiffDummyUnmapProc : _tiffUnmapProc);
166	if (tif)
167	tif->tif_fd = ifd;
168	return (tif);
169	}
170
171	/*
172	* Open a TIFF file for read/writing.
173	*/
174	TIFF*
175	TIFFOpen(const char* name, const char* mode)
176	{
177	static const char module[] = "TIFFOpen";
178	thandle_t fd;
179	int m;
180	DWORD dwOpenMode;
181	DWORD dwOpenFlags;
182	DWORD dwAction;
183	APIRET ulrc;
184
185	m = _TIFFgetMode(mode, module);
186
187	switch(m)
188	{
189	case O_RDONLY:
190	dwOpenMode = OPEN_ACCESS_READONLY;
191	dwOpenFlags = OPEN_ACTION_FAIL_IF_NEW;
192	break;
193	case O_RDWR:
194	dwOpenMode = OPEN_ACCESS_READWRITE;
195	dwOpenFlags = OPEN_ACTION_FAIL_IF_NEW;
196	break;
197	case O_RDWR\|O_CREAT:
198	dwOpenMode = OPEN_ACCESS_READWRITE;
199	dwOpenFlags = OPEN_ACTION_CREATE_IF_NEW;
200	break;
201	case O_RDWR\|O_TRUNC:
202	dwOpenMode = OPEN_ACCESS_READWRITE;
203	dwOpenFlags = OPEN_ACTION_FAIL_IF_NEW \| OPEN_ACTION_OPEN_IF_EXISTS;
204	break;
205	case O_RDWR\|O_CREAT\|O_TRUNC:
206	dwOpenMode = OPEN_ACCESS_READWRITE;
207	dwOpenFlags = OPEN_ACTION_CREATE_IF_NEW \| OPEN_ACTION_REPLACE_IF_EXISTS;
208	break;
209	default:
210	return ((TIFF*)0);
211	}
212	ulrc = DosOpen( name, (HFILE*)&fd, &dwAction, FILE_ARCHIVED\|FILE_NORMAL
213	,1000L, dwOpenFlags, dwOpenMode, NULL
214	);
215	if (fd != NO_ERROR) {
216	TIFFError(module, "%s: Cannot open", name);
217	return ((TIFF *)0);
218	}
219	return (TIFFFdOpen((int)fd, name, mode));
220	}
221
222	tdata_t
223	_TIFFmalloc(tsize_t s)
224	{
225	return ((tdata_t)GlobalAlloc(GMEM_FIXED, s));
226	}
227
228	void
229	_TIFFfree(tdata_t p)
230	{
231	GlobalFree(p);
232	return;
233	}
234
235	tdata_t
236	_TIFFrealloc(tdata_t p, tsize_t s)
237	{
238	void* pvTmp;
239	if ((pvTmp = GlobalReAlloc(p, s, 0)) == NULL) {
240	if ((pvTmp = GlobalAlloc(sGMEM_FIXED, s)) != NULL) {
241	CopyMemory(pvTmp, p, GlobalSize(p));
242	GlobalFree(p);
243	}
244	}
245	return ((tdata_t)pvTmp);
246	}
247
248	void
249	_TIFFmemset(void* p, int v, tsize_t c)
250	{
251	FillMemory(p, c, (BYTE)v);
252	}
253
254	void
255	_TIFFmemcpy(void* d, const tdata_t s, tsize_t c)
256	{
257	CopyMemory(d, s, c);
258	}
259
260	int
261	_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_t c)
262	{
263	register const pb1 = (const int)p1;
264	register const pb2 = (const int)p2;
265	register DWORD dwTmp = c;
266	register int iTmp;
267	for (iTmp = 0; dwTmp-- && !iTmp; iTmp = (int)pb1++ - (int)pb2++)
268	;
269	return (iTmp);
270	}
271
272	static void LINKAGEMODE
273	Os2WarningHandler(const char* module, const char* fmt, va_list ap)
274	{
275	#ifndef TIF_PLATFORM_CONSOLE
276	LPTSTR szTitle;
277	LPTSTR szTmp;
278	LPCTSTR szTitleText = "%s Warning";
279	LPCTSTR szDefaultModule = "TIFFLIB";
280	szTmp = (module == NULL) ? (LPTSTR)szDefaultModule : (LPTSTR)module;
281	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (lstrlen(szTmp) +
282	lstrlen(szTitleText) + lstrlen(fmt) + 128)*sizeof(TCHAR))) == NULL)
283	return;
284	wsprintf(szTitle, szTitleText, szTmp);
285	szTmp = szTitle + (lstrlen(szTitle)+2)*sizeof(TCHAR);
286	wvsprintf(szTmp, fmt, ap);
287	WinMessageBox( HWND_DESKTOP
288	,WinQueryFocus(HWND_DESKTOP)
289	,szTmp
290	,szTitle
291	,0
292	,MB_OK \| MB_INFORMATION
293	);
294	LocalFree(szTitle);
295	return;
296	#else
297	if (module != NULL)
298	fprintf(stderr, "%s: ", module);
299	fprintf(stderr, "Warning, ");
300	vfprintf(stderr, fmt, ap);
301	fprintf(stderr, ".\n");
302	#endif
303	}
304	TIFFErrorHandler _TIFFwarningHandler = Os2WarningHandler;
305
306	static void LINKAGEMODE
307	Os2ErrorHandler(const char* module, const char* fmt, va_list ap)
308	{
309	#ifndef TIF_PLATFORM_CONSOLE
310	LPTSTR szTitle;
311	LPTSTR szTmp;
312	LPCTSTR szTitleText = "%s Error";
313	LPCTSTR szDefaultModule = "TIFFLIB";
314	szTmp = (module == NULL) ? (LPTSTR)szDefaultModule : (LPTSTR)module;
315	if ((szTitle = (LPTSTR)LocalAlloc(LMEM_FIXED, (lstrlen(szTmp) +
316	lstrlen(szTitleText) + lstrlen(fmt) + 128)*sizeof(TCHAR))) == NULL)
317	return;
318	wsprintf(szTitle, szTitleText, szTmp);
319	szTmp = szTitle + (lstrlen(szTitle)+2)*sizeof(TCHAR);
320	wvsprintf(szTmp, fmt, ap);
321	WinMessageBox( HWND_DESKTOP
322	,WinQueryFocus(HWND_DESKTOP)
323	,szTmp
324	,szTitle
325	,0
326	,MB_OK \| MB_ICONEXCLAMATION
327	);
328	LocalFree(szTitle);
329	return;
330	#else
331	if (module != NULL)
332	fprintf(stderr, "%s: ", module);
333	vfprintf(stderr, fmt, ap);
334	fprintf(stderr, ".\n");
335	#endif
336	}
337	TIFFErrorHandler _TIFFerrorHandler = Os2ErrorHandler;
338