-SGPDriver::SGPDriver (wxDC* pDC, const char* szWinTitle = "", int xsize = 640, int ysize = 480)
- : m_iPhysicalXSize(xsize), m_iPhysicalYSize(ysize), m_sWindowTitle(szWinTitle), m_idDriver(0)
+SGPDriver::SGPDriver (wxDC* pDC, int xsize = 640, int ysize = 480)
+ : m_iPhysicalXSize(xsize), m_iPhysicalYSize(ysize), m_idDriver(0)