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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "variables.h"

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#include "string.h"

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#include "table/strings.h"

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#include "gfx.h"

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#include "gui.h"

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#include "functions.h"

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#include "macros.h"

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#include <direct.h>

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#include <unistd.h>

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#include <sys/stat.h>

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#include <stdlib.h>

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#include <time.h>

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#include <dos.h>

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#define INCL_WIN

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#define INCL_WINCLIPBOARD

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#include <os2.h>

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#include <i86.h>

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bool FiosIsRoot(const char *file)

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{

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	return path[3] == '\0';

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}

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void FiosGetDrives(void)

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{

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	FiosItem *fios;

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	unsigned disk, disk2, save, total;

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	_dos_getdrive(&save); // save original drive

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	/* get an available drive letter */

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	for (disk = 1;; disk++) {

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		_dos_setdrive(disk, &total);

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		if (disk >= total) return;

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		_dos_getdrive(&disk2);

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		if (disk == disk2) {

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			FiosItem *fios = FiosAlloc();

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			fios->type = FIOS_TYPE_DRIVE;

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			fios->mtime = 0;

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			snprintf(fios->name, lengthof(fios->name),  "%c:", 'A' + disk - 1);

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			ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));

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		}

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	}

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	_dos_setdrive(save, &total); // restore the original drive

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}

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bool FiosGetDiskFreeSpace(const char *path, uint32 *tot)

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{

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	struct diskfree_t free;

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	char drive = path[0] - 'A' + 1;

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	if (tot != NULL && _getdiskfree(drive, &free) == 0) {

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		*tot = free.avail_clusters * free.sectors_per_cluster * free.bytes_per_sector;

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		return true;

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	}

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	return false;

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}

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bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)

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{

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	char filename[MAX_PATH];

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	snprintf(filename, lengthof(filename), "%s" PATHSEP "%s", path, ent->d_name);

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	if (stat(filename, sb) != 0) return false;

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	return (ent->d_name[0] != '.'); // hidden file

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}

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static void ChangeWorkingDirectory(char *exe)

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{

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	char *s = strrchr(exe, '\\');

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	if (s != NULL) {

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		*s = '\0';

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		chdir(exe);

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		*s = '\\';

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	}

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}

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void ShowInfo(const char *str)

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{

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	HAB hab;

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	HMQ hmq;

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	ULONG rc;

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	// init PM env.

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	hmq = WinCreateMsgQueue((hab = WinInitialize(0)), 0);

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	// display the box

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	rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, str, "OpenTTD", 0, MB_OK | MB_MOVEABLE | MB_INFORMATION);

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	// terminate PM env.

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	WinDestroyMsgQueue(hmq);

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	WinTerminate(hab);

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}

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void ShowOSErrorBox(const char *buf)

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{

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	HAB hab;

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	HMQ hmq;

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	ULONG rc;

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	// init PM env.

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	hmq = WinCreateMsgQueue((hab = WinInitialize(0)), 0);

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	// display the box

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	rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, buf, "OpenTTD", 0, MB_OK | MB_MOVEABLE | MB_ERROR);

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	// terminate PM env.

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	WinDestroyMsgQueue(hmq);

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	WinTerminate(hab);

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}

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int CDECL main(int argc, char* argv[])

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{

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	// change the working directory to enable doubleclicking in UIs

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	ChangeWorkingDirectory(argv[0]);

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	_random_seeds[0][1] = _random_seeds[0][0] = time(NULL);

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	return ttd_main(argc, argv);

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}

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void DeterminePaths(void)

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{

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	char *s;

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	_path.game_data_dir = malloc(MAX_PATH);

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	ttd_strlcpy(_path.game_data_dir, GAME_DATA_DIR, MAX_PATH);

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	#if defined SECOND_DATA_DIR

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	_path.second_data_dir = malloc(MAX_PATH);

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	ttd_strlcpy(_path.second_data_dir, SECOND_DATA_DIR, MAX_PATH);

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	#endif

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#if defined(USE_HOMEDIR)

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	{

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		const char *homedir = getenv("HOME");

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		if (homedir == NULL) {

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			const struct passwd *pw = getpwuid(getuid());

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			if (pw != NULL) homedir = pw->pw_dir;

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		}

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		_path.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);

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	}

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#else /* not defined(USE_HOMEDIR) */

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	_path.personal_dir = malloc(MAX_PATH);

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	ttd_strlcpy(_path.personal_dir, PERSONAL_DIR, MAX_PATH);

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	// check if absolute or relative path

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	s = strchr(_path.personal_dir, '\\');

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	// add absolute path

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	if (s == NULL || _path.personal_dir != s) {

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		getcwd(_path.personal_dir, MAX_PATH);

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		s = strchr(_path.personal_dir, 0);

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		*s++ = '\\';

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		ttd_strlcpy(s, PERSONAL_DIR, MAX_PATH);

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	}

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#endif /* defined(USE_HOMEDIR) */

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	s = strchr(_path.personal_dir, 0);

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	// append a / ?

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	if (s[-1] != '\\') strcpy(s, "\\");

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	_path.save_dir = str_fmt("%ssave", _path.personal_dir);

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	_path.autosave_dir = str_fmt("%s\\autosave", _path.save_dir);

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	_path.scenario_dir = str_fmt("%sscenario", _path.personal_dir);

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	_path.gm_dir = str_fmt("%sgm\\", _path.game_data_dir);

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	_path.data_dir = str_fmt("%sdata\\", _path.game_data_dir);

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	if (_config_file == NULL)

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		_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);

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	_highscore_file = str_fmt("%shs.dat", _path.personal_dir);

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	_log_file = str_fmt("%sopenttd.log", _path.personal_dir);

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#if defined CUSTOM_LANG_DIR

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	// sets the search path for lng files to the custom one

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	_path.lang_dir = malloc( MAX_PATH );

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	ttd_strlcpy( _path.lang_dir, CUSTOM_LANG_DIR, MAX_PATH);

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#else

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	_path.lang_dir = str_fmt("%slang\\", _path.game_data_dir);

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#endif

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	// create necessary folders

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	mkdir(_path.personal_dir);

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	mkdir(_path.save_dir);

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	mkdir(_path.autosave_dir);

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	mkdir(_path.scenario_dir);

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}

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/**

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 * Insert a chunk of text from the clipboard onto the textbuffer. Get TEXT clipboard

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 * and append this up to the maximum length (either absolute or screenlength). If maxlength

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 * is zero, we don't care about the screenlength but only about the physical length of the string

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 * @param tb @Textbuf type to be changed

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 * @return Return true on successfull change of Textbuf, or false otherwise

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 */

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bool InsertTextBufferClipboard(Textbuf *tb)

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{

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	HAB hab = 0;

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	if (WinOpenClipbrd(hab))

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	{

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		const char* text = (const char*)WinQueryClipbrdData(hab, CF_TEXT);

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		if (text != NULL)

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		{

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			uint length = 0;

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			uint width = 0;

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			const char* i;

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			for (i = text; IsValidAsciiChar(*i); i++)

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			{

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				uint w;

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				if (tb->length + length >= tb->maxlength - 1) break;

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				w = GetCharacterWidth(FS_NORMAL, (byte)*i);

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				if (tb->maxwidth != 0 && width + tb->width + w > tb->maxwidth) break;

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				width += w;

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				length++;

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			}

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			memmove(tb->buf + tb->caretpos + length, tb->buf + tb->caretpos, tb->length - tb->caretpos + 1);

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			memcpy(tb->buf + tb->caretpos, text, length);

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			tb->width += width;

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			tb->caretxoffs += width;

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			tb->length += length;

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			tb->caretpos += length;

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			WinCloseClipbrd(hab);

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			return true;

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		}

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		WinCloseClipbrd(hab);

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	}

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	return false;

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}

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void CSleep(int milliseconds)

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{

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	delay(milliseconds);

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}