docs/latex/wx/delgrend.tex

   1 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2 %% Name:        delgrend.tex
   3 %% Purpose:     wxDelegateRendererNative documentation
   4 %% Author:      Vadim Zeitlin
   5 %% Modified by:
   6 %% Created:     11.08.03
   7 %% RCS-ID:      $Id$
   8 %% Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwindows.org>
   9 %% License:     wxWidgets license
  10 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  11
  12 \section{\class{wxDelegateRendererNative}}\label{wxdelegaterenderernative}
  13
  14 wxDelegateRendererNative allows reuse of renderers code by forwarding all the
  15 \helpref{wxRendererNative}{wxrenderernative} methods to the given object and
  16 thus allowing you to only modify some of its methods -- without having to
  17 reimplement all of them.
  18
  19 Note that the ``normal'', inheritance-based approach, doesn't work with the
  20 renderers as it is impossible to derive from a class unknown at compile-time
  21 and the renderer is only chosen at run-time. So suppose that you want to only
  22 add something to the drawing of the tree control buttons but leave all the
  23 other methods unchanged -- the only way to do it, considering that the renderer
  24 class which you want to customize might not even be written yet when you write
  25 your code (it could be written later and loaded from a DLL during run-time), is
  26 by using this class.
  27
  28 Except for the constructor, it has exactly the same methods as
  29 \helpref{wxRendererNative}{wxrenderernative} and their implementation is
  30 trivial: they are simply forwarded to the real renderer. Note that the ``real''
  31 renderer may, in turn, be a wxDelegateRendererNative as well and that there may
  32 be arbitrarily many levels like this -- but at the end of the chain there must
  33 be a real renderer which does the drawing.
  34
  35 \wxheading{Derived from}
  36
  37 \helpref{wxRendererNative}{wxrenderernative}
  38
  39 \wxheading{Include files}
  40
  41 <wx/renderer.h>
  42
  43
  44 \latexignore{\rtfignore{\wxheading{Members}}}
  45
  46 \membersection{wxDelegateRendererNative::wxDelegateRendererNative}\label{wxdelegaterenderernativector}
  47
  48 \func{}{wxDelegateRendererNative}{\void}
  49
  50 \func{}{wxDelegateRendererNative}{\param{wxRendererNative\& }{rendererNative}}
  51
  52 The default constructor does the same thing as the other one except that it
  53 uses the \helpref{generic renderer}{wxrenderernativegetgeneric} instead of the
  54 user-specified \arg{rendererNative}.
  55
  56 In any case, this sets up the delegate renderer object to follow all calls to
  57 the specified real renderer.
  58
  59 Note that this object does \emph{not} take ownership of (i.e. won't delete)
  60 \arg{rendererNative}.
  61
  62
  63 \membersection{wxDelegateRendererNative::DrawXXX}\label{wxdelegaterenderernativedrawxxx}
  64
  65 \func{}{DrawXXX}{\param{}{$\ldots$}}
  66
  67 This class also provides all the virtual methods of
  68 \helpref{wxRendererNative}{wxrenderernative}, please refer to that class
  69 documentation for the details.
  70