// create pens
HPEN hpenBack = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOW)),
hpenGray = CreatePen(PS_SOLID, 0, RGB(128, 128, 128)),
// create pens
HPEN hpenBack = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOW)),
hpenGray = CreatePen(PS_SOLID, 0, RGB(128, 128, 128)),