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 \func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{const wxString\& }{textdata}}
  82
  83 \func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{const void* }{binarydata}, \param{size\_t }{size}}
  84
  85 Add file to list of files stored in memory. Stored
  86 data (bitmap, text or raw data)
  87 will be copied into private memory stream and available under
  88 name "memory:" + \arg{filename}.
  89
  90 The \arg{type} argument is one of {\tt wxBITMAP\_TYPE\_XXX} constants.
  91 Note that you must use a \arg{type} value (aka image format)
  92 that wxWidgets can save (e.g. JPG, PNG, see \helpref{wxImage
  93 documentation}{wximage})!
  94
  95
  96 \membersection{wxMemoryFSHandler::RemoveFile}\label{wxmemoryfshandlerremovefile}
  97
  98 \func{static void}{RemoveFile}{\param{const wxString\& }{filename}}
  99
 100 Remove file from memory FS and free occupied memory.
 101