docs/latex/wx/fs_mem.tex

   1 %
   2 % automatically generated by HelpGen from
   3 % /home/vasek/fs\_mem.h at 27/Feb/00 19:23:10
   4 %
   5
   6 \section{\class{wxMemoryFSHandler}}\label{wxmemoryfshandler}
   7
   8 This \helpref{wxFileSystem}{wxfilesystem} handler can store arbitrary
   9 data in memory stream and make them accessible via URL. It is particularly
  10 suitable for storing bitmaps from resources or included XPM files so that
  11 they can be used with wxHTML.
  12
  13 Filenames are prefixed with "memory:", e.g. "memory:myfile.html".
  14
  15 Example:
  16
  17 \begin{verbatim}
  18 #ifndef __WXMSW__
  19 #include "logo.xpm"
  20 #endif
  21
  22 void MyFrame::OnAbout(wxCommandEvent&)
  23 {
  24     wxBusyCursor bcur;
  25     wxFileSystem::AddHandler(new wxMemoryFSHandler);
  26     wxMemoryFSHandler::AddFile("logo.pcx", wxBITMAP(logo), wxBITMAP_TYPE_PCX);
  27     wxMemoryFSHandler::AddFile("about.htm",
  28                                "<html><body>About: "
  29                                "<img src=\"memory:logo.pcx\"></body></html>");
  30
  31     wxDialog dlg(this, -1, wxString(_("About")));
  32     wxBoxSizer *topsizer;
  33     wxHtmlWindow *html;
  34     topsizer = new wxBoxSizer(wxVERTICAL);
  35     html = new wxHtmlWindow(&dlg, -1, wxDefaultPosition,
  36                             wxSize(380, 160), wxHW_SCROLLBAR_NEVER);
  37     html->SetBorders(0);
  38     html->LoadPage("memory:about.htm");
  39     html->SetSize(html->GetInternalRepresentation()->GetWidth(),
  40                   html->GetInternalRepresentation()->GetHeight());
  41     topsizer->Add(html, 1, wxALL, 10);
  42     topsizer->Add(new wxStaticLine(&dlg, -1), 0, wxEXPAND | wxLEFT | wxRIGHT, 10);
  43     topsizer->Add(new wxButton(&dlg, wxID_OK, "Ok"),
  44                   0, wxALL | wxALIGN_RIGHT, 15);
  45     dlg.SetAutoLayout(true);
  46     dlg.SetSizer(topsizer);
  47     topsizer->Fit(&dlg);
  48     dlg.Centre();
  49     dlg.ShowModal();
  50
  51     wxMemoryFSHandler::RemoveFile("logo.pcx");
  52     wxMemoryFSHandler::RemoveFile("about.htm");
  53 }
  54 \end{verbatim}
  55
  56
  57 \wxheading{Derived from}
  58
  59 \helpref{wxFileSystemHandler}{wxfilesystemhandler}
  60
  61 \wxheading{Include files}
  62
  63 <wx/fs\_mem.h>
  64
  65
  66 \latexignore{\rtfignore{\wxheading{Members}}}
  67
  68
  69 \membersection{wxMemoryFSHandler::wxMemoryFSHandler}\label{wxmemoryfshandlerwxmemoryfshandler}
  70
  71 \func{}{wxMemoryFSHandler}{\void}
  72
  73 Constructor.
  74
  75 \membersection{wxMemoryFSHandler::AddFile}\label{wxmemoryfshandleraddfile}
  76
  77 \func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{wxImage\& }{image}, \param{long }{type}}
  78
  79 \func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{const wxBitmap\& }{bitmap}, \param{long }{type}}
  80
  81 Add file to list of files stored in memory. Stored
  82 data (bitmap, text or raw data)
  83 will be copied into private memory stream and available under
  84 name "memory:" + \arg{filename}.
  85
  86 The \arg{type} argument is one of {\tt wxBITMAP\_TYPE\_XXX} constants.
  87 Note that you must use a \arg{type} value (aka image format)
  88 that wxWidgets can save (e.g. JPG, PNG, see \helpref{wxImage
  89 documentation}{wximage})!
  90
  91 \wxheading{See also}
  92
  93 \helpref{AddFileWithMimeType}{wxmemoryfshandleraddfilewithmimetype}
  94
  95
  96 \membersection{wxMemoryFSHandler::AddFileWithMimeType}\label{wxmemoryfshandleraddfilewithmimetype}
  97
  98 \func{static void}{AddFileWithMimeType}{\param{const wxString\& }{filename}, \param{const wxString\& }{textdata}, \param{const wxString\& }{mimetype}}
  99
 100 \func{static void}{AddFileWithMimeType}{\param{const wxString\& }{filename}, \param{const void* }{binarydata}, \param{size\_t }{size}, \param{const wxString\& }{mimetype}}
 101
 102 Like \helpref{AddFile}{wxmemoryfshandleraddfile}, but lets you explicitly
 103 specify added file's MIME type. This version should be used whenever you know
 104 the MIME type, because it makes accessing the files faster.
 105
 106 \newsince{2.8.5}
 107
 108 \wxheading{See also}
 109
 110 \helpref{AddFile}{wxmemoryfshandleraddfile}
 111
 112 \membersection{wxMemoryFSHandler::RemoveFile}\label{wxmemoryfshandlerremovefile}
 113
 114 \func{static void}{RemoveFile}{\param{const wxString\& }{filename}}
 115
 116 Remove file from memory FS and free occupied memory.
 117