Function gdi32::BitBlt

pub unsafe extern "system" fn BitBlt(
    hdc: HDC, 
    x: c_int, 
    y: c_int, 
    cx: c_int, 
    cy: c_int, 
    hdcSrc: HDC, 
    x1: c_int, 
    y1: c_int, 
    rop: DWORD
) -> BOOL