SendMessage(hDlg, WM_SETICON, ICON_SMALL, (LPARAM) LoadIcon(hInst, MAKEINTRESOURCE(IDI_SMALL)));
HINSTANCE hinst = (HINSTANCE)GetWindowLong(hh, GWL_HINSTANCE)
SendMessage(hDlg, WM_SETICON, ICON_SMALL, (LPARAM) LoadIcon(hInst, MAKEINTRESOURCE(IDI_SMALL)));
HINSTANCE hinst = (HINSTANCE)GetWindowLong(hh, GWL_HINSTANCE)