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