///////////////////////////////////////////////////////////////////////////// // Name: fs_mem.h // Purpose: interface of wxMemoryFSHandler // Author: wxWidgets team // RCS-ID: $Id$ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// /** @class wxMemoryFSHandler This wxFileSystem handler can store arbitrary data in memory stream and make them accessible via an URL. It is particularly suitable for storing bitmaps from resources or included XPM files so that they can be used with wxHTML. Filenames are prefixed with @c "memory:", e.g. @c "memory:myfile.html". Example: @code #ifndef __WXMSW__ #include "logo.xpm" #endif void MyFrame::OnAbout(wxCommandEvent&) { wxBusyCursor bcur; wxFileSystem::AddHandler(new wxMemoryFSHandler); wxMemoryFSHandler::AddFile("logo.pcx", wxBITMAP(logo), wxBITMAP_TYPE_PCX); wxMemoryFSHandler::AddFile("about.htm", "About: " "

"); wxDialog dlg(this, -1, wxString(_("About"))); wxBoxSizer *topsizer; wxHtmlWindow *html; topsizer = new wxBoxSizer(wxVERTICAL); html = new wxHtmlWindow(&dlg, -1, wxDefaultPosition, wxSize(380, 160), wxHW_SCROLLBAR_NEVER); html->SetBorders(0); html->LoadPage("memory:about.htm"); html->SetSize(html->GetInternalRepresentation()->GetWidth(), html->GetInternalRepresentation()->GetHeight()); topsizer->Add(html, 1, wxALL, 10); topsizer->Add(new wxStaticLine(&dlg, -1), 0, wxEXPAND | wxLEFT | wxRIGHT, 10); topsizer->Add(new wxButton(&dlg, wxID_OK, "Ok"), 0, wxALL | wxALIGN_RIGHT, 15); dlg.SetAutoLayout(true); dlg.SetSizer(topsizer); topsizer->Fit(&dlg); dlg.Centre(); dlg.ShowModal(); wxMemoryFSHandler::RemoveFile("logo.pcx"); wxMemoryFSHandler::RemoveFile("about.htm"); } @endcode @library{wxbase} @category{vfs} @see wxMemoryFSHandler::AddFileWithMimeType */ class wxMemoryFSHandler : public wxFileSystemHandler { public: /** Constructor. */ wxMemoryFSHandler(); //@{ /** Adds a file to the list of the files stored in memory. Stored data (bitmap, text or raw data) will be copied into private memory stream and available under name @c "memory:" + @e filename. @note you must use a @a type value (aka image format) that wxWidgets can save (e.g. JPG, PNG, see wxImage documentation)! @see AddFileWithMimeType() */ static void AddFile(const wxString& filename, wxImage& image, wxBitmapType type); static void AddFile(const wxString& filename, const wxBitmap& bitmap, wxBitmapType type); //@} //@{ /** Like AddFile(), but lets you explicitly specify added file's MIME type. This version should be used whenever you know the MIME type, because it makes accessing the files faster. @since 2.8.5 @see AddFile() */ static void AddFileWithMimeType(const wxString& filename, const wxString& textdata, const wxString& mimetype); static void AddFileWithMimeType(const wxString& filename, const void* binarydata, size_t size, const wxString& mimetype); //@} /** Removes a file from memory FS and frees the occupied memory. */ static void RemoveFile(const wxString& filename); };