Function GetTextExtentExPointI 

pub unsafe fn GetTextExtentExPointI(
    hdc: HDC,
    lpwszstring: *const u16,
    cwchstring: i32,
    nmaxextent: i32,
    lpnfit: Option<*mut i32>,
    lpndx: Option<*mut i32>,
    lpsize: *mut SIZE,
) -> BOOL