// this will be WNDCLASSEX::lpfnWndProc
LRESULT CALLBACK BaseWindow::msgRouter (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){
//pointer to the window that will receive the message
BaseWindow *wnd = 0;
if(message == WM_NCCREATE){
// receiving a WM_NCCREATE message means that a new window has just been created,
// so we need to associate the window's handle with its BaseWindow instance pointer
SetWindowLong(hWnd, GWL_USERDATA, long((LPCREATESTRUCT(lParam))->lpCreateParams));
}
// we retrieve the instance of AbstractWindow that corresponds to the destination window's HWND
wnd = (BaseWindow*) (GetWindowLong (hWnd, GWL_USERDATA));
// we then route the message to the wndProc method defined in the derived BaseWindow class
if (wnd)
return wnd->wndProc(hWnd, message, wParam, lParam);
else
// for messages that arrive prior to WM_NCCREATE
// and the HWND <-> BaseWindow * association was not made
return DefWindowProc(hWnd, message, wParam, lParam);
}
LRESULT CALLBACK BaseWindow::baseWndProc(HWND hwnd, UINT mess, WPARAM wParam, LPARAM lParam)
{
BaseWindow *instance = NULL;
BaseWindow *childInstance = NULL;
if ( mess == WM_CREATE )
{
//ottengo il puntatore this
CREATESTRUCT *cStruct = (CREATESTRUCT*)lParam;
instance = (BaseWindow*)cStruct->lpCreateParams;
if ( instance )
//salvo il puntatore nello spazio utente della window
SetWindowLongPtr(hwnd,GWLP_USERDATA, (LONG_PTR)instance);
return TRUE;
}
else
{
//verifico la notifica di un child
if ( mess == NOTIFY_CHILD_CREATION )
{
//un child notifica la propria creazione
HWND tmpHwnd = (HWND)wParam;
childInstance = (BaseWindow*)lParam;
if ( childInstance && tmpHwnd )
{
//salvo il this sullo spazio utente della hwnd
SetWindowLongPtr(tmpHwnd, GWLP_USERDATA, (LONG_PTR)childInstance);
}
}
else if ( mess == WM_COMMAND || mess == WM_HSCROLL || mess == WM_VSCROLL )
{
instance = BaseWindow::getInstance((HWND)lParam);
}
else if ( mess == WM_NOTIFY )
{
LPNMHDR data = (LPNMHDR)lParam;
instance = BaseWindow::getInstance(data->hwndFrom);
}
else if ( mess == WM_MENUCOMMAND )
{
//messaggio da un menu con MF_BYPOSITION
HMENU menu = (HMENU)lParam;
MENUINFO info;
memset(&info,0,sizeof(MENUINFO));
info.fMask = MIM_MENUDATA;
info.cbSize = sizeof(MENUINFO);
GetMenuInfo(menu,&info);
instance = (BaseWindow*)info.dwMenuData;
}
/*else if ( mess == WM_CLOSE )
{
instance = BaseWindow::getInstance(hwnd);
if ( instance && instance->closeList ) return instance->closeList->onClose(instance->idWin, instance->getHWND());
} */
else instance = BaseWindow::getInstance(hwnd);
if ( instance ) return instance->wndProc(mess, wParam, lParam);
else return DefWindowProc(hwnd, mess, wParam, lParam);
}
}
