nel/src/misc/dummy_window.cpp

   1 // NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
   2 // Copyright (C) 2010  Winch Gate Property Limited
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU Affero General Public License as
   6 // published by the Free Software Foundation, either version 3 of the
   7 // License, or (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU Affero General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU Affero General Public License
  15 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17
  18 #include "stdmisc.h"
  19 #include "nel/misc/dummy_window.h"
  20
  21
  22 #ifdef NL_OS_WINDOWS
  23
  24 #ifdef DEBUG_NEW
  25         #define new DEBUG_NEW
  26 #endif
  27
  28 namespace NLMISC
  29 {
  30
  31
  32 static LRESULT CALLBACK nlDefaultWinProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  33 {
  34         return DefWindowProc(hwnd, uMsg, wParam, lParam);
  35 }
  36
  37
  38 // ***************************************************************
  39 CDummyWindow::CDummyWindow() : _HWnd(NULL)
  40 {
  41 }
  42
  43 // ***************************************************************
  44 bool CDummyWindow::init(HINSTANCE hInstance, WNDPROC winProc)
  45 {
  46         release();
  47         static const char *INVISIBLE_WINDOW_CLASS = "nl_invisible_wnd_class";
  48         WNDCLASSEXA wc;
  49         wc.cbSize = sizeof(WNDCLASSEXA);
  50         if (!GetClassInfoExA(hInstance, INVISIBLE_WINDOW_CLASS, &wc))
  51         {
  52                 wc.cbSize = sizeof(WNDCLASSEXA);
  53                 wc.style                        = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
  54                 wc.lpfnWndProc          = nlDefaultWinProc;
  55                 wc.cbClsExtra           = 0;
  56                 wc.cbWndExtra           = 0;
  57                 wc.hInstance            = hInstance;
  58                 wc.hIcon                        = NULL;
  59                 wc.hCursor                      = NULL;
  60                 wc.hbrBackground        = NULL;
  61                 wc.lpszMenuName         = NULL;
  62                 wc.lpszClassName        = INVISIBLE_WINDOW_CLASS;
  63                 wc.hIconSm                      = NULL;
  64                 RegisterClassExA(&wc);
  65         }
  66     _HWnd = CreateWindowA(INVISIBLE_WINDOW_CLASS, "", WS_POPUP,
  67                          CW_USEDEFAULT,CW_USEDEFAULT,
  68                          CW_USEDEFAULT,CW_USEDEFAULT,
  69                          NULL, 0,
  70                          hInstance, 0);
  71         if (_HWnd)
  72         {
  73                 if (winProc) SetWindowLongPtrA(_HWnd, GWLP_WNDPROC, (LONG_PTR) winProc);
  74                 return true;
  75         }
  76         return false;
  77 }
  78
  79 // ***************************************************************
  80 void CDummyWindow::release()
  81 {
  82         if (_HWnd)
  83         {
  84                 DestroyWindow(_HWnd);
  85                 _HWnd = NULL;
  86         }
  87 }
  88
  89 // ***************************************************************
  90 CDummyWindow::~CDummyWindow()
  91 {
  92         release();
  93 }
  94
  95 } // NLMISC
  96
  97 #endif // NL_OS_WINDOWS