Function winapi::um::wingdi::GetTextExtentExPointA

pub unsafe extern "system" fn GetTextExtentExPointA(
    hdc: HDC, 
    lpszString: LPCSTR, 
    cchString: c_int, 
    nMaxExtent: c_int, 
    lpnFit: LPINT, 
    lpnDx: LPINT, 
    lpSize: LPSIZE
) -> BOOL