MemoryFSHandler¶This FileSystem 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 HTML.
Filenames are prefixed with "memory:" , e.g. "memory:myfile.html" .
Example:
def OnAbout(self, event):
bcur = wx.BeginBusyCursor()
wx.FileSystem.AddHandler(wx.MemoryFSHandler)
wx.MemoryFSHandler.AddFile("logo.pcx", wx.Bitmap("logo.pcx", wx.BITMAP_TYPE_PCX))
wx.MemoryFSHandler.AddFile("about.htm",
"<html><body>About: "
"<img src=\"memory:logo.pcx\"></body></html>")
dlg = wx.Dialog(self, -1, _("About"))
topsizer = wx.BoxSizer(wx.VERTICAL)
html = wx.html.HtmlWindow(dlg, size=wx.Size(380, 160), style=wx.HW_SCROLLBAR_NEVER)
html.SetBorders(0)
html.LoadPage("memory:about.htm")
html.SetSize(html.GetInternalRepresentation().GetWidth(),
html.GetInternalRepresentation().GetHeight())
topsizer.Add(html, 1, wx.ALL, 10)
topsizer.Add(wx.StaticLine(dlg, -1), 0, wx.EXPAND | wx.LEFT | wx.RIGHT, 10)
topsizer.Add(wx.Button(dlg, wx.ID_OK, "Ok"),
0, wx.ALL | wx.ALIGN_RIGHT, 15)
dlg.SetAutoLayout(True)
dlg.SetSizer(topsizer)
topsizer.Fit(dlg)
dlg.Centre()
dlg.ShowModal()
wx.MemoryFSHandler.RemoveFile("logo.pcx")
wx.MemoryFSHandler.RemoveFile("about.htm")
See also
Methods Summary¶| __init__ | Constructor. |
| AddFile | Adds a file to the list of the files stored in memory. |
| AddFileWithMimeType | Like AddFile , but lets you explicitly specify added file’s MIME type. |
| RemoveFile | Removes a file from memory FS and frees the occupied memory. |
Class API¶This FileSystem handler can store arbitrary data in memory stream and make them accessible via an URL.
Possible constructors:
Inheritance Diagram
MemoryFSHandler()
Constructor.
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 "memory:" + filename.
Note
you must use a type value (aka image format) that wxWidgets can save (e.g. JPG, PNG, see Image documentation)!
See also
Overloaded Implementations:
AddFile (filename, image, type)
| Parameters: |
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AddFile (filename, bitmap, type)
| Parameters: |
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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.
New in version 2.8.5.
See also
Overloaded Implementations:
AddFileWithMimeType (filename, textdata, mimetype)
| Parameters: |
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AddFileWithMimeType (filename, binarydata, size, mimetype)
| Parameters: |
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Removes a file from memory FS and frees the occupied memory.
| Parameters: | filename (string) – |
|---|