samples/render/renddll.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        renddll.cpp
   3 // Purpose:     Example of a renderer implemented in a DLL
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     04.08.03
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 #include "wx/wxprec.h"
  13
  14 #ifdef __BORLANDC__
  15     #pragma hdrstop
  16 #endif
  17
  18 #include "wx/renderer.h"
  19
  20 #ifndef WX_PRECOMP
  21     #include "wx/dc.h"
  22 #endif
  23
  24 // derive from wxDelegateRendererNative and not wxRendererNative itself to be
  25 // able to only reimplement the methods we want to show and not all of them
  26 class MyDllRenderer : public wxDelegateRendererNative
  27 {
  28 public:
  29     // draw the header control button (used by wxListCtrl)
  30     virtual int DrawHeaderButton(wxWindow * WXUNUSED(win),
  31                                  wxDC& dc,
  32                                  const wxRect& rect,
  33                                  int WXUNUSED(flags) = 0,
  34                                  wxHeaderSortIconType WXUNUSED(sortArrow) = wxHDR_SORT_ICON_NONE,
  35                                  wxHeaderButtonParams* WXUNUSED(params) = NULL)
  36     {
  37         dc.SetBrush(*wxCYAN_BRUSH);
  38         dc.SetTextForeground(*wxRED);
  39         dc.DrawRoundedRectangle(rect, 10);
  40         dc.DrawLabel("MyDllRenderer", wxNullBitmap, rect, wxALIGN_CENTER);
  41
  42         return dc.GetTextExtent("MyDllRenderer").x;
  43     }
  44
  45     virtual wxRendererVersion GetVersion() const
  46     {
  47         return wxRendererVersion(wxRendererVersion::Current_Version,
  48                                  wxRendererVersion::Current_Age);
  49     }
  50
  51 #if 0 // just for debugging
  52     MyDllRenderer()
  53     {
  54         wxMessageBox(wxT("Creating MyDllRenderer"), wxT("Renderer Sample"));
  55     }
  56
  57     virtual ~MyDllRenderer()
  58     {
  59         wxMessageBox(wxT("Deleting MyDllRenderer"), wxT("Renderer Sample"));
  60     }
  61 #endif // 0
  62 };
  63
  64 extern "C"
  65 WXEXPORT wxRendererNative *wxCreateRenderer()
  66 {
  67     return new MyDllRenderer;
  68 }