docs/latex/wx/filesys.tex

   1 %
   2 % automatically generated by HelpGen from
   3 % filesystem.tex at 21/Mar/99 23:00:52
   4 %
   5
   6 \section{\class{wxFileSystem}}\label{wxfilesystem}
   7
   8 This class provides an interface for opening files on different
   9 file systems. It can handle absolute and/or local filenames.
  10 It uses a system of \helpref{handlers}{wxfilesystemhandler} to
  11 provide access to user-defined virtual file systems.
  12
  13 \wxheading{Derived from}
  14
  15 \helpref{wxObject}{wxobject}
  16
  17 \wxheading{Include files}
  18
  19 <wx/filesys.h>
  20
  21 \wxheading{See Also}
  22
  23 \helpref{wxFileSystemHandler}{wxfilesystemhandler},
  24 \helpref{wxFSFile}{wxfsfile},
  25 \helpref{Overview}{fs}
  26
  27 \latexignore{\rtfignore{\wxheading{Members}}}
  28
  29 \membersection{wxFileSystem::wxFileSystem}\label{wxfilesystemwxfilesystem}
  30
  31 \func{}{wxFileSystem}{\void}
  32
  33 Constructor.
  34
  35 \membersection{wxFileSystem::AddHandler}\label{wxfilesystemaddhandler}
  36
  37 \func{static void}{AddHandler}{\param{wxFileSystemHandler }{*handler}}
  38
  39 This static function adds new handler into the list of handlers.
  40 The \helpref{handlers}{wxfilesystemhandler} provide access to virtual FS.
  41
  42 \wxheading{Note}
  43
  44 You can call:
  45
  46 \begin{verbatim}
  47 wxFileSystem::AddHandler(new My_FS_Handler);
  48 \end{verbatim}
  49
  50 This is because (a) AddHandler is a static method, and (b) the handlers
  51 are deleted in wxFileSystem's destructor so that you don't have to
  52 care about it.
  53
  54 \membersection{wxFileSystem::ChangePathTo}\label{wxfilesystemchangepathto}
  55
  56 \func{void}{ChangePathTo}{\param{const wxString\& }{location}, \param{bool }{is\_dir = false}}
  57
  58 Sets the current location. {\it location} parameter passed to
  59 \helpref{OpenFile}{wxfilesystemopenfile} is relative to this path.
  60
  61 {\bf Caution! } Unless {\it is\_dir} is true the {\it location} parameter
  62 is not the directory name but the name of the file in this directory. All these
  63 commands change the path to "dir/subdir/":
  64
  65 \begin{verbatim}
  66   ChangePathTo("dir/subdir/xh.htm");
  67   ChangePathTo("dir/subdir", true);
  68 C  hangePathTo("dir/subdir/", true);
  69 \end{verbatim}
  70
  71 \wxheading{Parameters}
  72
  73 \docparam{location}{the new location. Its meaning depends on the value of {\it is\_dir}}
  74
  75 \docparam{is\_dir}{if true {\it location} is new directory. If false (default)
  76 {\it location} is {\bf file in} the new directory.}
  77
  78 \wxheading{Example}
  79
  80 \begin{verbatim}
  81   f = fs -> OpenFile("hello.htm"); // opens file 'hello.htm'
  82   fs -> ChangePathTo("subdir/folder", true);
  83   f = fs -> OpenFile("hello.htm"); // opens file 'subdir/folder/hello.htm' !!
  84 \end{verbatim}
  85
  86 \membersection{wxFileSystem::GetPath}\label{wxfilesystemgetpath}
  87
  88 \func{wxString}{GetPath}{\void}
  89
  90 Returns actual path (set by \helpref{ChangePathTo}{wxfilesystemchangepathto}).
  91
  92 \membersection{wxFileSystem::FileNameToURL}\label{wxfilesystemfilenametourl}
  93
  94 \func{static wxString}{FileNameToURL}{\param{wxFileName }{filename}}
  95
  96 Converts filename into URL.
  97
  98 \wxheading{See also}
  99
 100 \helpref{wxFileSystem::URLToFileName}{wxfilesystemurltofilename},
 101 \helpref{wxFileName}{wxfilename}
 102
 103 \membersection{wxFileSystem::FindFirst}\label{wxfilesystemfindfirst}
 104
 105 \func{wxString}{FindFirst}{\param{const wxString\& }{wildcard}, \param{int }{flags = 0}}
 106
 107 Works like \helpref{wxFindFirstFile}{wxfindfirstfile}. Returns name of the first
 108 filename (within filesystem's current path) that matches {\it wildcard}. {\it flags} may be one of
 109 wxFILE (only files), wxDIR (only directories) or 0 (both).
 110
 111 \membersection{wxFileSystem::FindNext}\label{wxfilesystemfindnext}
 112
 113 \func{wxString}{FindNext}{\void}
 114
 115 Returns the next filename that matches parameters passed to \helpref{FindFirst}{wxfilesystemfindfirst}.
 116
 117 \membersection{wxFileSystem::OpenFile}\label{wxfilesystemopenfile}
 118
 119 \func{wxFSFile*}{OpenFile}{\param{const wxString\& }{location}}
 120
 121 Opens the file and returns a pointer to a \helpref{wxFSFile}{wxfsfile} object
 122 or NULL if failed. It first tries to open the file in relative scope
 123 (based on value passed to ChangePathTo() method) and then as an
 124 absolute path.  Note that the user is responsible for deleting the returned
 125 wxFSFile.
 126
 127 \membersection{wxFileSystem::URLToFileName}\label{wxfilesystemurltofilename}
 128
 129 \func{static wxFileName}{URLToFileName}{\param{const wxString\& }{url}}
 130
 131 Converts URL into a well-formed filename. The URL must use the {\tt file}
 132 protocol.
 133
 134 \wxheading{See also}
 135
 136 \helpref{wxFileSystem::FileNameToURL}{wxfilesystemfilenametourl},
 137 \helpref{wxFileName}{wxfilename}
 138