interface/wx/dcclient.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        dcclient.h
   3 // Purpose:     interface of wxClientDC and wxPaintDC
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxPaintDC
  11
  12     A wxPaintDC must be constructed if an application wishes to paint on the
  13     client area of a window from within an EVT_PAINT() event handler. This
  14     should normally be constructed as a temporary stack object; don't store a
  15     wxPaintDC object. If you have an EVT_PAINT() handler, you @e must create a
  16     wxPaintDC object within it even if you don't actually use it.
  17
  18     Using wxPaintDC within your EVT_PAINT() handler is important because it
  19     automatically sets the clipping area to the damaged area of the window.
  20     Attempts to draw outside this area do not appear.
  21
  22     To draw on a window from outside your EVT_PAINT() handler, construct a
  23     wxClientDC object.
  24
  25     To draw on the whole window including decorations, construct a wxWindowDC
  26     object (Windows only).
  27
  28     A wxPaintDC object is initialized to use the same font and colours as the
  29     window it is associated with.
  30
  31     @library{wxcore}
  32     @category{dc}
  33
  34     @see wxDC, wxClientDC, wxMemoryDC, wxWindowDC, wxScreenDC
  35 */
  36 class wxPaintDC : public wxWindowDC
  37 {
  38 public:
  39     /**
  40         Constructor. Pass a pointer to the window on which you wish to paint.
  41     */
  42     wxPaintDC(wxWindow* window);
  43 };
  44
  45
  46
  47 /**
  48     @class wxClientDC
  49
  50     A wxClientDC must be constructed if an application wishes to paint on the
  51     client area of a window from outside an EVT_PAINT() handler. This should
  52     normally be constructed as a temporary stack object; don't store a
  53     wxClientDC object.
  54
  55     To draw on a window from within an EVT_PAINT() handler, construct a
  56     wxPaintDC object instead.
  57
  58     To draw on the whole window including decorations, construct a wxWindowDC
  59     object (Windows only).
  60
  61     A wxClientDC object is initialized to use the same font and colours as the
  62     window it is associated with.
  63
  64     @library{wxcore}
  65     @category{dc}
  66
  67     @see wxDC, wxMemoryDC, wxPaintDC, wxWindowDC, wxScreenDC
  68 */
  69 class wxClientDC : public wxWindowDC
  70 {
  71 public:
  72     /**
  73         Constructor. Pass a pointer to the window on which you wish to paint.
  74     */
  75     wxClientDC(wxWindow* window);
  76 };
  77
  78
  79
  80 /**
  81     @class wxWindowDC
  82
  83     A wxWindowDC must be constructed if an application wishes to paint on the
  84     whole area of a window (client and decorations). This should normally be
  85     constructed as a temporary stack object; don't store a wxWindowDC object.
  86
  87     To draw on a window from inside an EVT_PAINT() handler, construct a
  88     wxPaintDC object instead.
  89
  90     To draw on the client area of a window from outside an EVT_PAINT() handler,
  91     construct a wxClientDC object.
  92
  93     A wxWindowDC object is initialized to use the same font and colours as the
  94     window it is associated with.
  95
  96     @library{wxcore}
  97     @category{dc}
  98
  99     @see wxDC, wxMemoryDC, wxPaintDC, wxClientDC, wxScreenDC
 100 */
 101 class wxWindowDC : public wxDC
 102 {
 103 public:
 104     /**
 105         Constructor. Pass a pointer to the window on which you wish to paint.
 106     */
 107     wxWindowDC(wxWindow* window);
 108 };
 109