oracular (3) wxBufferedPaintDC.3erl.gz

NAME

       wxBufferedPaintDC - Functions for wxBufferedPaintDC class

DESCRIPTION

       This  is  a  subclass of wxBufferedDC which can be used inside of an EVT_PAINT() event handler to achieve
       double-buffered   drawing.   Just   use   this   class   instead   of    wxPaintDC    and    make    sure
       wxWindow:setBackgroundStyle/2 is called with wxBG_STYLE_PAINT somewhere in the class initialization code,
       and that's all you have to do to (mostly) avoid flicker. The only thing to watch out for is that  if  you
       are  using  this class together with wxScrolled (not implemented in wx), you probably do not want to call
       wxScrolledWindow:prepareDC/2 on it as it already does this internally for the real underlying wxPaintDC.

       See: wxDC, wxBufferedDC, wxAutoBufferedPaintDC (not implemented in wx), wxPaintDC

       This class is derived (and can use functions) from: wxBufferedDC wxMemoryDC wxDC

       wxWidgets docs: wxBufferedPaintDC

DATA TYPES

       wxBufferedPaintDC() = wx:wx_object()

EXPORTS

       new(Window) -> wxBufferedPaintDC()

              Types:

                 Window = wxWindow:wxWindow()

       new(Window, Buffer) -> wxBufferedPaintDC()

       new(Window, Buffer :: [Option]) -> wxBufferedPaintDC()

              Types:

                 Window = wxWindow:wxWindow()
                 Option = {style, integer()}

       new(Window, Buffer, Options :: [Option]) -> wxBufferedPaintDC()

              Types:

                 Window = wxWindow:wxWindow()
                 Buffer = wxBitmap:wxBitmap()
                 Option = {style, integer()}

              As with wxBufferedDC, you may either provide the bitmap to be  used  for  buffering  or  let  this
              object  create  one  internally  (in the latter case, the size of the client part of the window is
              used).

              Pass wxBUFFER_CLIENT_AREA for the style parameter to indicate that just the  client  area  of  the
              window is buffered, or wxBUFFER_VIRTUAL_AREA to indicate that the buffer bitmap covers the virtual
              area.

       destroy(This :: wxBufferedPaintDC()) -> ok

              Copies everything drawn on the DC so far to the  window  associated  with  this  object,  using  a
              wxPaintDC.