include/wx/msw/private/hiddenwin.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/msw/private/hiddenwin.h
   3 // Purpose:     Helper for creating a hidden window used by wxMSW internally.
   4 // Author:      Vadim Zeitlin
   5 // Created:     2011-09-16
   6 // Copyright:   (c) 2011 Vadim Zeitlin <vadim@wxwidgets.org>
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_MSW_PRIVATE_HIDDENWIN_H_
  11 #define _WX_MSW_PRIVATE_HIDDENWIN_H_
  12
  13 #include "wx/msw/private.h"
  14
  15 /*
  16   Creates a hidden window with supplied window proc registering the class for
  17   it if necessary (i.e. the first time only). Caller is responsible for
  18   destroying the window and unregistering the class (note that this must be
  19   done because wxWidgets may be used as a DLL and so may be loaded/unloaded
  20   multiple times into/from the same process so we can't rely on automatic
  21   Windows class unregistration).
  22
  23   pclassname is a pointer to a caller stored classname, which must initially be
  24   NULL. classname is the desired wndclass classname. If function successfully
  25   registers the class, pclassname will be set to classname.
  26  */
  27 extern "C" WXDLLIMPEXP_BASE HWND
  28 wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
  29
  30 #endif // _WX_MSW_PRIVATE_HIDDENWIN_H_