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# TQDir Class Reference

The TQDir class provides access to directory structures and their contents in a platform-independent way. More...

All the functions in this class are reentrant when TQt is built with thread support.

`#include <ntqdir.h>`

List of all member functions.

## Public Members

- enum FilterSpec { Dirs = 0x001, Files = 0x002, Drives = 0x004, NoSymLinks = 0x008, All = 0x007, TypeMask = 0x00F, Readable = 0x010, Writable = 0x020, Executable = 0x040, RWEMask = 0x070, Modified = 0x080, Hidden = 0x100, System = 0x200, AccessMask = 0x3F0, DefaultFilter = -1 }
- enum SortSpec { Name = 0x00, Time = 0x01, Size = 0x02, Unsorted = 0x03, SortByMask = 0x03, DirsFirst = 0x04, Reversed = 0x08, IgnoreCase = 0x10, LocaleAware = 0x20, DefaultSort = -1 }
- TQDir ()
- TQDir ( const TQString & path, const TQString & nameFilter = TQString::null, int sortSpec = Name | IgnoreCase, int filterSpec = All )
- TQDir ( const TQDir & d )
- virtual ~TQDir ()
- TQDir & operator= ( const TQDir & d )
- TQDir & operator= ( const TQString & path )
- virtual void setPath ( const TQString & path )
- virtual TQString path () const
- virtual TQString absPath () const
- virtual TQString canonicalPath () const
- virtual TQString dirName () const
- virtual TQString filePath ( const TQString & fileName, bool acceptAbsPath = TRUE ) const
- virtual TQString absFilePath ( const TQString & fileName, bool acceptAbsPath = TRUE ) const
- virtual bool cd ( const TQString & dirName, bool acceptAbsPath = TRUE )
- virtual bool cdUp ()
- TQString nameFilter () const
- virtual void setNameFilter ( const TQString & nameFilter )
- FilterSpec filter () const
- virtual void setFilter ( int filterSpec )
- SortSpec sorting () const
- virtual void setSorting ( int sortSpec )
- bool matchAllDirs () const
- virtual void setMatchAllDirs ( bool enable )
- uint count () const
- TQString operator[] ( int index ) const
- virtual TQStrList encodedEntryList ( int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const (obsolete)
- virtual TQStrList encodedEntryList ( const TQString & nameFilter, int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const (obsolete)
- virtual TQStringList entryList ( int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const
- virtual TQStringList entryList ( const TQString & nameFilter, int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const
- virtual const TQFileInfoList * entryInfoList ( int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const
- virtual const TQFileInfoList * entryInfoList ( const TQString & nameFilter, int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const
- virtual bool mkdir ( const TQString & dirName, bool acceptAbsPath = TRUE ) const
- virtual bool rmdir ( const TQString & dirName, bool acceptAbsPath = TRUE ) const
- virtual bool isReadable () const
- virtual bool exists () const
- virtual bool isRoot () const
- virtual bool isRelative () const
- virtual void convertToAbs ()
- virtual bool operator== ( const TQDir & d ) const
- virtual bool operator!= ( const TQDir & d ) const
- virtual bool remove ( const TQString & fileName, bool acceptAbsPath = TRUE )
- virtual bool rename ( const TQString & oldName, const TQString & newName, bool acceptAbsPaths = TRUE )
- virtual bool exists ( const TQString & name, bool acceptAbsPath = TRUE )
- void refresh () const

## Static Public Members

- TQString convertSeparators ( const TQString & pathName )
- const TQFileInfoList * drives ()
- char separator ()
- bool setCurrent ( const TQString & path )
- TQDir current ()
- TQDir home ()
- TQDir root ()
- TQString currentDirPath ()
- TQString homeDirPath ()
- TQString rootDirPath ()
- bool match ( const TQStringList & filters, const TQString & fileName )
- bool match ( const TQString & filter, const TQString & fileName )
- TQString cleanDirPath ( const TQString & filePath )
- bool isRelativePath ( const TQString & path )

## Detailed Description

The TQDir class provides access to directory structures and their contents in a platform-independent way.

A TQDir is used to manipulate path names, access information regarding paths and files, and manipulate the underlying file system.

A TQDir can point to a file using either a relative or an absolute path. Absolute paths begin with the directory separator "/" (optionally preceded by a drive specification under Windows). If you always use "/" as a directory separator, TQt will translate your paths to conform to the underlying operating system. Relative file names begin with a directory name or a file name and specify a path relative to the current directory.

The "current" path refers to the application's working directory. A TQDir's own path is set and retrieved with setPath() and path().

An example of an absolute path is the string "/tmp/quartz", a relative path might look like "src/fatlib". You can use the function isRelative() to check if a TQDir is using a relative or an absolute file path. Call convertToAbs() to convert a relative TQDir to an absolute one. For a simplified path use cleanDirPath(). To obtain a path which has no symbolic links or redundant ".." elements use canonicalPath(). The path can be set with setPath(), and changed with cd() and cdUp().

TQDir provides several static functions, for example, setCurrent() to set the application's working directory and currentDirPath() to retrieve the application's working directory. Access to some common paths is provided with the static functions, current(), home() and root() which return TQDir objects or currentDirPath(), homeDirPath() and rootDirPath() which return the path as a string. If you want to know about your application's path use TQApplication::applicationDirPath().

The number of entries in a directory is returned by count(). Obtain a string list of the names of all the files and directories in a directory with entryList(). If you prefer a list of TQFileInfo pointers use entryInfoList(). Both these functions can apply a name filter, an attributes filter (e.g. read-only, files not directories, etc.), and a sort order. The filters and sort may be set with calls to setNameFilter(), setFilter() and setSorting(). They may also be specified in the entryList() and entryInfoList()'s arguments.

Create a new directory with mkdir(), rename a directory with rename() and remove an existing directory with rmdir(). Remove a file with remove(). You can interrogate a directory with exists(), isReadable() and isRoot().

To get a path with a filename use filePath(), and to get a directory name use dirName(); neither of these functions checks for the existence of the file or directory.

The list of root directories is provided by drives(); on Unix systems this returns a list containing one root directory, "/"; on Windows the list will usually contain "C:/", and possibly "D:/", etc.

It is easiest to work with "/" separators in TQt code. If you need to present a path to the user or need a path in a form suitable for a function in the underlying operating system use convertSeparators().

Examples:

See if a directory exists.

        TQDir d( "example" );                        // "./example"
        if ( !d.exists() )
            tqWarning( "Cannot find the example directory" );

Traversing directories and reading a file.

        TQDir d = TQDir::root();                      // "/"
        if ( !d.cd("tmp") ) {                       // "/tmp"
            tqWarning( "Cannot find the \"/tmp\" directory" );
        } else {
            TQFile f( d.filePath("ex1.txt") );       // "/tmp/ex1.txt"
            if ( !f.open(IO_ReadWrite) )
                tqWarning( "Cannot create the file %s", f.name() );
        }

A program that lists all the files in the current directory (excluding symbolic links), sorted by size, smallest first:

        #include <stdio.h>
        #include <ntqdir.h>

        int main( int argc, char **argv )
        {
            TQDir d;
            d.setFilter( TQDir::Files | TQDir::Hidden | TQDir::NoSymLinks );
            d.setSorting( TQDir::Size | TQDir::Reversed );

            const TQFileInfoList *list = d.entryInfoList();
            TQFileInfoListIterator it( *list );
            TQFileInfo *fi;

            printf( "     Bytes Filename\n" );
            while ( (fi = it.current()) != 0 ) {
                printf( "%10li %s\n", fi->size(), fi->fileName().latin1() );
                ++it;
            }
            return 0;
        }

See also TQApplication::applicationDirPath() and Input/Output and Networking.

## Member Type Documentation

### TQDir::FilterSpec

This enum describes the filtering options available to TQDir, e.g. for entryList() and entryInfoList(). The filter value is specified by OR-ing together values from the following list:

- `TQDir::Dirs` - List directories only.
- `TQDir::Files` - List files only.
- `TQDir::Drives` - List disk drives (ignored under Unix).
- `TQDir::NoSymLinks` - Do not list symbolic links (ignored by operating systems that don't support symbolic links).
- `TQDir::All` - List directories, files, drives and symlinks (this does not list broken symlinks unless you specify System).
- `TQDir::TypeMask` - A mask for the the Dirs, Files, Drives and NoSymLinks flags.
- `TQDir::Readable` - List files for which the application has read access.
- `TQDir::Writable` - List files for which the application has write access.
- `TQDir::Executable` - List files for which the application has execute access. Executables needs to be combined with Dirs or Files.
- `TQDir::RWEMask` - A mask for the Readable, Writable and Executable flags.
- `TQDir::Modified` - Only list files that have been modified (ignored under Unix).
- `TQDir::Hidden` - List hidden files (on Unix, files starting with a .).
- `TQDir::System` - List system files (on Unix, FIFOs, sockets and device files)
- `TQDir::AccessMask` - A mask for the Readable, Writable, Executable Modified, Hidden and System flags
- `TQDir::DefaultFilter` - Internal flag.

If you do not set any of Readable, Writable or Executable, TQDir will set all three of them. This makes the default easy to write and at the same time useful.

Examples: `Readable|Writable` means list all files for which the application has read access, write access or both. `Dirs|Drives` means list drives, directories, all files that the application can read, write or execute, and also symlinks to such files/directories.

### TQDir::SortSpec

This enum describes the sort options available to TQDir, e.g. for entryList() and entryInfoList(). The sort value is specified by OR-ing together values from the following list:

- `TQDir::Name` - Sort by name.
- `TQDir::Time` - Sort by time (modification time).
- `TQDir::Size` - Sort by file size.
- `TQDir::Unsorted` - Do not sort.
- `TQDir::SortByMask` - A mask for Name, Time and Size.
- `TQDir::DirsFirst` - Put the directories first, then the files.
- `TQDir::Reversed` - Reverse the sort order.
- `TQDir::IgnoreCase` - Sort case-insensitively.
- `TQDir::LocaleAware` - Sort names using locale aware compares
- `TQDir::DefaultSort` - Internal flag.

You can only specify one of the first four.

If you specify both DirsFirst and Reversed, directories are still put first, but in reverse order; the files will be listed after the directories, again in reverse order.

## Member Function Documentation

### TQDir::TQDir ()

Constructs a TQDir pointing to the current directory (".").

See also currentDirPath().

### TQDir::TQDir ( const TQString & path, const TQString & nameFilter = TQString::null, int sortSpec = Name | IgnoreCase, int filterSpec = All )

Constructs a TQDir with path path, that filters its entries by name using nameFilter and by attributes using filterSpec. It also sorts the names using sortSpec.

The default nameFilter is an empty string, which excludes nothing; the default filterSpec is All, which also means exclude nothing. The default sortSpec is `Name|IgnoreCase`, i.e. sort by name case-insensitively.

Example that lists all the files in "/tmp":

        TQDir d( "/tmp" );
        for ( int i = 0; i < d.count(); i++ )
            printf( "%s\n", d[i] );

If path is "" or TQString::null, TQDir uses "." (the current directory). If nameFilter is "" or TQString::null, TQDir uses the name filter "*" (all files).

Note that path need not exist.

See also exists(), setPath(), setNameFilter(), setFilter(), and setSorting().

### TQDir::TQDir ( const TQDir & d )

Constructs a TQDir that is a copy of the directory d.

See also operator=().

### TQDir::~TQDir ()`[virtual]`

Destroys the TQDir frees up its resources.

### TQString TQDir::absFilePath ( const TQString & fileName, bool acceptAbsPath = TRUE ) const`[virtual]`

Returns the absolute path name of a file in the directory. Does not check if the file actually exists in the directory. Redundant multiple separators or "." and ".." directories in fileName will not be removed (see cleanDirPath()).

If acceptAbsPath is TRUE a fileName starting with a separator "/" will be returned without change. If acceptAbsPath is FALSE an absolute path will be prepended to the fileName and the resultant string returned.

See also filePath().

### TQString TQDir::absPath () const`[virtual]`

Returns the absolute path (a path that starts with "/" or with a drive specification), which may contain symbolic links, but never contains redundant ".", ".." or multiple separators.

See also setPath(), canonicalPath(), exists(), cleanDirPath(), dirName(), and absFilePath().

Example: fileiconview/qfileiconview.cpp.

### TQString TQDir::canonicalPath () const`[virtual]`

Returns the canonical path, i.e. a path without symbolic links or redundant "." or ".." elements.

On systems that do not have symbolic links this function will always return the same string that absPath() returns. If the canonical path does not exist (normally due to dangling symbolic links) canonicalPath() returns TQString::null.

See also path(), absPath(), exists(), cleanDirPath(), dirName(), absFilePath(), and TQString::isNull().

### bool TQDir::cd ( const TQString & dirName, bool acceptAbsPath = TRUE )`[virtual]`

Changes the TQDir's directory to dirName.

If acceptAbsPath is TRUE a path starting with separator "/" will cause the function to change to the absolute directory. If acceptAbsPath is FALSE any number of separators at the beginning of dirName will be removed and the function will descend into dirName.

Returns TRUE if the new directory exists and is readable; otherwise returns FALSE. Note that the logical cd() operation is not performed if the new directory does not exist.

Calling cd( ".." ) is equivalent to calling cdUp().

See also cdUp(), isReadable(), exists(), and path().

Example: fileiconview/mainwindow.cpp.

### bool TQDir::cdUp ()`[virtual]`

Changes directory by moving one directory up from the TQDir's current directory.

Returns TRUE if the new directory exists and is readable; otherwise returns FALSE. Note that the logical cdUp() operation is not performed if the new directory does not exist.

See also cd(), isReadable(), exists(), and path().

### TQString TQDir::cleanDirPath ( const TQString & filePath )`[static]`

Removes all multiple directory separators "/" and resolves any "."s or ".."s found in the path, filePath.

Symbolic links are kept. This function does not return the canonical path, but rather the simplest version of the input. For example, "./local" becomes "local", "local/../bin" becomes "bin" and "/local/usr/../bin" becomes "/local/bin".

See also absPath() and canonicalPath().

### TQString TQDir::convertSeparators ( const TQString & pathName )`[static]`

Returns pathName with the '/' separators converted to separators that are appropriate for the underlying operating system.

On Windows, convertSeparators("c:/winnt/system32") returns "c:\winnt\system32".

The returned string may be the same as the argument on some operating systems, for example on Unix.

Examples: dirview/dirview.cpp and fileiconview/qfileiconview.cpp.

### void TQDir::convertToAbs ()`[virtual]`

Converts the directory path to an absolute path. If it is already absolute nothing is done.

See also isRelative().

### uint TQDir::count () const

Returns the total number of directories and files that were found.

Equivalent to entryList().count().

See also operator[]() and entryList().

### TQDir TQDir::current ()`[static]`

Returns the application's current directory.

Use path() to access a TQDir object's path.

See also currentDirPath() and TQDir::TQDir().

### TQString TQDir::currentDirPath ()`[static]`

Returns the absolute path of the application's current directory.

See also current().

Examples: dirview/dirview.cpp, helpviewer/helpwindow.cpp, and qdir/qdir.cpp.

### TQString TQDir::dirName () const`[virtual]`

Returns the name of the directory; this is not the same as the path, e.g. a directory with the name "mail", might have the path "/var/spool/mail". If the directory has no name (e.g. it is the root directory) TQString::null is returned.

No check is made to ensure that a directory with this name actually exists.

See also path(), absPath(), absFilePath(), exists(), and TQString::isNull().

### const TQFileInfoList * TQDir::drives ()`[static]`

Returns a list of the root directories on this system. On Windows this returns a number of TQFileInfo objects containing "C:/", "D:/" etc. On other operating systems, it returns a list containing just one root directory (e.g. "/").

The returned pointer is owned by TQt. Callers should not delete or modify it.

Example: dirview/main.cpp.

### TQStrList TQDir::encodedEntryList ( int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const`[virtual]`

This function is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.

This function is included to easy porting from TQt 1.x to TQt 2.0, it is the same as entryList(), but encodes the filenames as 8-bit strings using TQFile::encodedName().

It is more efficient to use entryList().

### TQStrList TQDir::encodedEntryList ( const TQString & nameFilter, int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const`[virtual]`

This function is obsolete. It is provided to keep old source working. We strongly advise against using it in new code.

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

This function is included to easy porting from TQt 1.x to TQt 2.0, it is the same as entryList(), but encodes the filenames as 8-bit strings using TQFile::encodedName().

It is more efficient to use entryList().

### const TQFileInfoList * TQDir::entryInfoList ( const TQString & nameFilter, int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const`[virtual]`

Returns a list of TQFileInfo objects for all the files and directories in the directory, ordered in accordance with setSorting() and filtered in accordance with setFilter() and setNameFilter().

The filter and sorting specifications can be overridden using the nameFilter, filterSpec and sortSpec arguments.

Returns 0 if the directory is unreadable or does not exist.

The returned pointer is a const pointer to a TQFileInfoList. The list is owned by the TQDir object and will be reused on the next call to entryInfoList() for the same TQDir instance. If you want to keep the entries of the list after a subsequent call to this function you must copy them.

Note: TQFileInfoList is really a TQPtrList.

See also entryList(), setNameFilter(), setSorting(), and setFilter().

Examples: dirview/dirview.cpp and fileiconview/qfileiconview.cpp.

### const TQFileInfoList * TQDir::entryInfoList ( int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const`[virtual]`

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Returns a list of TQFileInfo objects for all the files and directories in the directory, ordered in accordance with setSorting() and filtered in accordance with setFilter() and setNameFilter().

The filter and sorting specifications can be overridden using the filterSpec and sortSpec arguments.

Returns 0 if the directory is unreadable or does not exist.

The returned pointer is a const pointer to a TQFileInfoList. The list is owned by the TQDir object and will be reused on the next call to entryInfoList() for the same TQDir instance. If you want to keep the entries of the list after a subsequent call to this function you must copy them.

Note: TQFileInfoList is really a TQPtrList.

See also entryList(), setNameFilter(), setSorting(), and setFilter().

### TQStringList TQDir::entryList ( const TQString & nameFilter, int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const`[virtual]`

Returns a list of the names of all the files and directories in the directory, ordered in accordance with setSorting() and filtered in accordance with setFilter() and setNameFilter().

The filter and sorting specifications can be overridden using the nameFilter, filterSpec and sortSpec arguments.

Returns an empty list if the directory is unreadable or does not exist.

See also entryInfoList(), setNameFilter(), setSorting(), and setFilter().

Example: table/statistics/statistics.cpp.

### TQStringList TQDir::entryList ( int filterSpec = DefaultFilter, int sortSpec = DefaultSort ) const`[virtual]`

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Returns a list of the names of all the files and directories in the directory, ordered in accordance with setSorting() and filtered in accordance with setFilter() and setNameFilter().

The filter and sorting specifications can be overridden using the filterSpec and sortSpec arguments.

Returns an empty list if the directory is unreadable or does not exist.

See also entryInfoList(), setNameFilter(), setSorting(), and setFilter().

### bool TQDir::exists ( const TQString & name, bool acceptAbsPath = TRUE )`[virtual]`

Checks for the existence of the file name.

If acceptAbsPath is TRUE a path starting with separator "/" will check the file with the absolute path. If acceptAbsPath is FALSE any number of separators at the beginning of name will be removed and the resultant file name will be checked.

Returns TRUE if the file exists; otherwise returns FALSE.

See also TQFileInfo::exists() and TQFile::exists().

### bool TQDir::exists () const`[virtual]`

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Returns TRUE if the directory exists; otherwise returns FALSE. (If a file with the same name is found this function will return FALSE).

See also TQFileInfo::exists() and TQFile::exists().

### TQString TQDir::filePath ( const TQString & fileName, bool acceptAbsPath = TRUE ) const`[virtual]`

Returns the path name of a file in the directory. Does not check if the file actually exists in the directory. If the TQDir is relative the returned path name will also be relative. Redundant multiple separators or "." and ".." directories in fileName will not be removed (see cleanDirPath()).

If acceptAbsPath is TRUE a fileName starting with a separator "/" will be returned without change. If acceptAbsPath is FALSE an absolute path will be prepended to the fileName and the resultant string returned.

See also absFilePath(), isRelative(), and canonicalPath().

### FilterSpec TQDir::filter () const

Returns the value set by setFilter()

### TQDir TQDir::home ()`[static]`

Returns the home directory.

Under Windows the `HOME` environment variable is used. If this does not exist the `USERPROFILE` environment variable is used. If that does not exist the path is formed by concatenating the `HOMEDRIVE` and `HOMEPATH` environment variables. If they don't exist the rootDirPath() is used (this uses the `SystemDrive` environment variable). If none of these exist "C:\" is used.

Under non-Windows operating systems the `HOME` environment variable is used if it exists, otherwise rootDirPath() is used.

See also homeDirPath().

### TQString TQDir::homeDirPath ()`[static]`

Returns the absolute path of the user's home directory.

See also home().

### bool TQDir::isReadable () const`[virtual]`

Returns TRUE if the directory is readable and we can open files by name; otherwise returns FALSE.

Warning: A FALSE value from this function is not a guarantee that files in the directory are not accessible.

See also TQFileInfo::isReadable().

Examples: dirview/dirview.cpp and fileiconview/qfileiconview.cpp.

### bool TQDir::isRelative () const`[virtual]`

Returns TRUE if the directory path is relative to the current directory and returns FALSE if the path is absolute (e.g. under UNIX a path is relative if it does not start with a "/").

See also convertToAbs().

### bool TQDir::isRelativePath ( const TQString & path )`[static]`

Returns TRUE if path is relative; returns FALSE if it is absolute.

See also isRelative().

### bool TQDir::isRoot () const`[virtual]`

Returns TRUE if the directory is the root directory; otherwise returns FALSE.

Note: If the directory is a symbolic link to the root directory this function returns FALSE. If you want to test for this use canonicalPath(), e.g.

        TQDir d( "/tmp/root_link" );
        d = d.canonicalPath();
        if ( d.isRoot() )
            tqWarning( "It is a root link" );

See also root() and rootDirPath().

### bool TQDir::match ( const TQString & filter, const TQString & fileName )`[static]`

Returns TRUE if the fileName matches the wildcard (glob) pattern filter; otherwise returns FALSE. The filter may contain multiple patterns separated by spaces or semicolons.

(See TQRegExp wildcard matching.)

See also TQRegExp::match().

### bool TQDir::match ( const TQStringList & filters, const TQString & fileName )`[static]`

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Returns TRUE if the fileName matches any of the wildcard (glob) patterns in the list of filters; otherwise returns FALSE.

(See TQRegExp wildcard matching.)

See also TQRegExp::match().

### bool TQDir::matchAllDirs () const

Returns the value set by setMatchAllDirs()

See also setMatchAllDirs().

### bool TQDir::mkdir ( const TQString & dirName, bool acceptAbsPath = TRUE ) const`[virtual]`

Creates a directory.

If acceptAbsPath is TRUE a path starting with a separator ('/') will create the absolute directory; if acceptAbsPath is FALSE any number of separators at the beginning of dirName will be removed.

Returns TRUE if successful; otherwise returns FALSE.

See also rmdir().

### TQString TQDir::nameFilter () const

Returns the string set by setNameFilter()

### bool TQDir::operator!= ( const TQDir & d ) const`[virtual]`

Returns TRUE if directory d and this directory have different paths or different sort or filter settings; otherwise returns FALSE.

Example:

        // The current directory is "/usr/local"
        TQDir d1( "/usr/local/bin" );
        TQDir d2( "bin" );
        if ( d1 != d2 )
            tqDebug( "They differ" );

### TQDir & TQDir::operator= ( const TQDir & d )

Makes a copy of TQDir d and assigns it to this TQDir.

### TQDir & TQDir::operator= ( const TQString & path )

This is an overloaded member function, provided for convenience. It behaves essentially like the above function.

Sets the directory path to be the given path.

### bool TQDir::operator== ( const TQDir & d ) const`[virtual]`

Returns TRUE if directory d and this directory have the same path and their sort and filter settings are the same; otherwise returns FALSE.

Example:

        // The current directory is "/usr/local"
        TQDir d1( "/usr/local/bin" );
        TQDir d2( "bin" );
        d2.convertToAbs();
        if ( d1 == d2 )
            tqDebug( "They're the same" );

### TQString TQDir::operator[] ( int index ) const

Returns the file name at position index in the list of file names. Equivalent to entryList().at(index).

Returns a TQString::null if the index is out of range or if the entryList() function failed.

See also count() and entryList().

### TQString TQDir::path () const`[virtual]`

Returns the path, this may contain symbolic links, but never contains redundant ".", ".." or multiple separators.

The returned path can be either absolute or relative (see setPath()).

See also setPath(), absPath(), exists(), cleanDirPath(), dirName(), absFilePath(), and convertSeparators().

### void TQDir::refresh () const

Refreshes the directory information.

### bool TQDir::remove ( const TQString & fileName, bool acceptAbsPath = TRUE )`[virtual]`

Removes the file, fileName.

If acceptAbsPath is TRUE a path starting with separator "/" will remove the file with the absolute path. If acceptAbsPath is FALSE any number of separators at the beginning of fileName will be removed and the resultant file name will be removed.

Returns TRUE if the file is removed successfully; otherwise returns FALSE.

### bool TQDir::rename ( const TQString & oldName, const TQString & newName, bool acceptAbsPaths = TRUE )`[virtual]`

Renames a file or directory.

If acceptAbsPaths is TRUE a path starting with a separator ('/') will rename the file with the absolute path; if acceptAbsPaths is FALSE any number of separators at the beginning of the names will be removed.

Returns TRUE if successful; otherwise returns FALSE.

On most file systems, rename() fails only if oldName does not exist or if newName and oldName are not on the same partition. On Windows, rename() will fail if newName already exists. However, there are also other reasons why rename() can fail. For example, on at least one file system rename() fails if newName points to an open file.

Example: fileiconview/qfileiconview.cpp.

### bool TQDir::rmdir ( const TQString & dirName, bool acceptAbsPath = TRUE ) const`[virtual]`

Removes a directory.

If acceptAbsPath is TRUE a path starting with a separator ('/') will remove the absolute directory; if acceptAbsPath is FALSE any number of separators at the beginning of dirName will be removed.

The directory must be empty for rmdir() to succeed.

Returns TRUE if successful; otherwise returns FALSE.

See also mkdir().

### TQDir TQDir::root ()`[static]`

Returns the root directory.

See also rootDirPath() and drives().

### TQString TQDir::rootDirPath ()`[static]`

Returns the absolute path for the root directory.

For UNIX operating systems this returns "/". For Windows file systems this normally returns "c:/".

See also root() and drives().

### char TQDir::separator ()`[static]`

Returns the native directory separator; "/" under UNIX (including Mac OS X) and "\" under Windows.

You do not need to use this function to build file paths. If you always use "/", TQt will translate your paths to conform to the underlying operating system.

### bool TQDir::setCurrent ( const TQString & path )`[static]`

Sets the application's current working directory to path. Returns TRUE if the directory was successfully changed; otherwise returns FALSE.

### void TQDir::setFilter ( int filterSpec )`[virtual]`

Sets the filter used by entryList() and entryInfoList() to filterSpec. The filter is used to specify the kind of files that should be returned by entryList() and entryInfoList(). See TQDir::FilterSpec.

See also filter() and setNameFilter().

### void TQDir::setMatchAllDirs ( bool enable )`[virtual]`

If enable is TRUE then all directories are included (e.g. in entryList()), and the nameFilter() is only applied to the files. If enable is FALSE then the nameFilter() is applied to both directories and files.

See also matchAllDirs().

### void TQDir::setNameFilter ( const TQString & nameFilter )`[virtual]`

Sets the name filter used by entryList() and entryInfoList() to nameFilter.

The nameFilter is a wildcard (globbing) filter that understands "*" and "?" wildcards. (See TQRegExp wildcard matching.) You may specify several filter entries all separated by a single space " " or by a semi-colon ";".

For example, if you want entryList() and entryInfoList() to list all files ending with either ".cpp" or ".h", you would use either dir.setNameFilter("*.cpp *.h") or dir.setNameFilter("*.cpp;*.h").

See also nameFilter() and setFilter().

### void TQDir::setPath ( const TQString & path )`[virtual]`

Sets the path of the directory to path. The path is cleaned of redundant ".", ".." and of multiple separators. No check is made to ensure that a directory with this path exists.

The path can be either absolute or relative. Absolute paths begin with the directory separator "/" (optionally preceded by a drive specification under Windows). Relative file names begin with a directory name or a file name and specify a path relative to the current directory. An example of an absolute path is the string "/tmp/quartz", a relative path might look like "src/fatlib".

See also path(), absPath(), exists(), cleanDirPath(), dirName(), absFilePath(), isRelative(), and convertToAbs().

### void TQDir::setSorting ( int sortSpec )`[virtual]`

Sets the sort order used by entryList() and entryInfoList().

The sortSpec is specified by OR-ing values from the enum TQDir::SortSpec.

See also sorting() and SortSpec.

### SortSpec TQDir::sorting () const

Returns the value set by setSorting()

See also setSorting() and SortSpec.

This file is part of the TQt toolkit. Copyright © 1995-2007 Trolltech. All Rights Reserved.