Function user32::UpdateLayeredWindow

pub unsafe extern "system" fn UpdateLayeredWindow(
    hWnd: HWND, 
    hdcDst: HDC, 
    pptDst: *mut POINT, 
    psize: *mut SIZE, 
    hdcSrc: HDC, 
    pptSrc: *mut POINT, 
    crKey: COLORREF, 
    pblend: *mut BLENDFUNCTION, 
    dwFlags: DWORD
) -> BOOL