[wxWidgets.git] / docs / latex / wx / fs_mem.tex

%
% automatically generated by HelpGen from
% /home/vasek/fs\_mem.h at 27/Feb/00 19:23:10
%

\section{\class{wxMemoryFSHandler}}\label{wxmemoryfshandler}

This \helpref{wxFileSystem}{wxfilesystem} handler can store arbitrary 
data in memory stream and make them accessible via 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 "memory:", e.g. "memory:myfile.html".

Example:

\begin{verbatim}
#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", 
                               "<html><body>About: "
                               "<img src=\"memory:logo.pcx\"></body></html>");

    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");
}
\end{verbatim}


\wxheading{Derived from}

\helpref{wxFileSystemHandler}{wxfilesystemhandler}

\wxheading{Include files}

<wx/fs\_mem.h>


\latexignore{\rtfignore{\wxheading{Members}}}


\membersection{wxMemoryFSHandler::wxMemoryFSHandler}\label{wxmemoryfshandlerwxmemoryfshandler}

\func{}{wxMemoryFSHandler}{\void}

Constructor.

\membersection{wxMemoryFSHandler::AddFile}\label{wxmemoryfshandleraddfile}

\func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{wxImage\& }{image}, \param{long }{type}}

\func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{const wxBitmap\& }{bitmap}, \param{long }{type}}

\func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{const wxString\& }{textdata}}

\func{static void}{AddFile}{\param{const wxString\& }{filename}, \param{const void* }{binarydata}, \param{size\_t }{size}}

Add file to list of files stored in memory. Stored 
data (bitmap, text or raw data)
will be copied into private memory stream and available under 
name "memory:" + filename.

Note that when storing image/bitmap, you must use image format that wxWidgets
can write (e.g. JPG, PNG, see \helpref{wxImage documentation}{wximage})!


\membersection{wxMemoryFSHandler::RemoveFile}\label{wxmemoryfshandlerremovefile}

\func{static void}{RemoveFile}{\param{const wxString\& }{filename}}

Remove file from memory FS and free occupied memory.
Commit	Line	Data
dbddf573 VS	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;
2b5f62a0	25	wxFileSystem::AddHandler(new wxMemoryFSHandler);
dbddf573 VS	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
e7240349	63	<wx/fs\_mem.h>
dbddf573 VS	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:" + filename.
	89
fc2171bd	90	Note that when storing image/bitmap, you must use image format that wxWidgets
f6bcfd97	91	can write (e.g. JPG, PNG, see \helpref{wxImage documentation}{wximage})!
dbddf573 VS	92
	93
	94	\membersection{wxMemoryFSHandler::RemoveFile}\label{wxmemoryfshandlerremovefile}
	95
	96	\func{static void}{RemoveFile}{\param{const wxString\& }{filename}}
	97
	98	Remove file from memory FS and free occupied memory.
	99