interface/wx/display.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        display.h
   3 // Purpose:     interface of wxDisplay
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxDisplay
  11
  12     Determines the sizes and locations of displays connected to the system.
  13
  14     @library{wxcore}
  15     @category{misc}
  16
  17     @see wxClientDisplayRect(), wxDisplaySize(), wxDisplaySizeMM()
  18 */
  19 class wxDisplay
  20 {
  21 public:
  22     /**
  23         Constructor, setting up a wxDisplay instance with the specified
  24         display.
  25
  26         @param index
  27             The index of the display to use. This must be non-negative and
  28             lower than the value returned by GetCount().
  29     */
  30     wxDisplay(unsigned int index = 0);
  31
  32     /**
  33         Destructor.
  34     */
  35     ~wxDisplay();
  36
  37     /**
  38         Changes the video mode of this display to the mode specified in the
  39         mode parameter.
  40
  41         If wxDefaultVideoMode is passed in as the mode parameter, the defined
  42         behaviour is that wxDisplay will reset the video mode to the default
  43         mode used by the display. On Windows, the behavior is normal. However,
  44         there are differences on other platforms. On Unix variations using X11
  45         extensions it should behave as defined, but some irregularities may
  46         occur.
  47
  48         On wxMac passing in wxDefaultVideoMode as the mode parameter does
  49         nothing. This happens because carbon no longer has access to
  50         @c DMUseScreenPrefs(), an undocumented function that changed the video
  51         mode to the system default by using the system's "scrn" resource.
  52     */
  53     bool ChangeMode(const wxVideoMode& mode = wxDefaultVideoMode);
  54
  55     /**
  56         Returns the client area of the display. The client area is the part of
  57         the display available for the normal (non full screen) windows, usually
  58         it is the same as GetGeometry() but it could be less if there is a
  59         taskbar (or equivalent) on this display.
  60     */
  61     wxRect GetClientArea() const;
  62
  63     /**
  64         Returns the number of connected displays.
  65     */
  66     static unsigned GetCount();
  67
  68     /**
  69         Returns the current video mode that this display is in.
  70     */
  71     wxVideoMode GetCurrentMode() const;
  72
  73     /**
  74         Returns the bit depth of the display whose index was passed to the
  75         constructor.
  76     */
  77     int GetDepth() const;
  78
  79     /**
  80         Returns the index of the display on which the given point lies, or
  81         @c wxNOT_FOUND if the point is not on any connected display.
  82
  83         @param pt
  84             The point to locate.
  85     */
  86     static int GetFromPoint(const wxPoint& pt);
  87
  88     /**
  89         Returns the index of the display on which the given window lies.
  90
  91         If the window is on more than one display it gets the display that
  92         overlaps the window the most.
  93
  94         Returns @c wxNOT_FOUND if the window is not on any connected display.
  95
  96         @param win
  97             The window to locate.
  98     */
  99     static int GetFromWindow(const wxWindow* win);
 100
 101     /**
 102         Returns the bounding rectangle of the display whose index was passed to
 103         the constructor.
 104
 105         @see GetClientArea(), wxDisplaySize()
 106     */
 107     wxRect GetGeometry() const;
 108
 109     /**
 110         Fills and returns an array with all the video modes that are supported
 111         by this display, or video modes that are supported by this display and
 112         match the mode parameter (if mode is not wxDefaultVideoMode).
 113     */
 114     wxArrayVideoModes GetModes(const wxVideoMode& mode = wxDefaultVideoMode) const;
 115
 116     /**
 117         Returns the display's name. A name is not available on all platforms.
 118     */
 119     wxString GetName() const;
 120
 121     /**
 122         Returns @true if the display is the primary display. The primary
 123         display is the one whose index is 0.
 124     */
 125     bool IsPrimary() const;
 126 };
 127