wxClientDC - Functions for wxClientDC class

wxClientDC() = wx:wx_object()

wxClientDC  is  primarily  useful  for  obtaining  information  about the window from outside EVT_PAINT()
       handler.

       Typical use of this class is to obtain the extent of some text string in order to  allocate  enough  size
       for a window, e.g.

       Note:  While  wxClientDC  may  also  be  used  for drawing on the client area of a window from outside an
       EVT_PAINT() handler in some ports, this does not work on all platforms (neither wxOSX nor wxGTK with  GTK
       3 Wayland backend support this, so drawing using wxClientDC simply doesn't have any effect there) and the
       only   portable  way  of  drawing  is  via  wxPaintDC.  To  redraw  a  small  part  of  the  window,  use
       wxWindow:refreshRect/3 to invalidate just this part and check  wxWindow:getUpdateRegion/1  in  the  paint
       event handler to redraw this part only.

       wxClientDC  objects  should  normally  be  constructed  as  temporary  stack  objects, i.e. don't store a
       wxClientDC object.

       A wxClientDC object is initialized to use the same font and colours as the window it is associated with.

       See: wxDC, wxMemoryDC, wxPaintDC, wxWindowDC, wxScreenDC

       This class is derived (and can use functions) from: wxWindowDCwxDC

       wxWidgets docs: wxClientDC

new(Window)->wxClientDC()

              Types:

                 Window = wxWindow:wxWindow()

              Constructor.

              Pass a pointer to the window on which you wish to paint.

       destroy(This::wxClientDC())->ok

              Destroys the object.

wxWidgets team.                                     wx 2.1.1                                    wxClientDC(3erl)

       wxClientDC - Functions for wxClientDC class