@Override
    public void setOnItemLongClickListener(
            android.widget.AdapterView.OnItemLongClickListener listener) {
        this.mOnItemLongClickListener = listener;
        super.setOnItemLongClickListener(this);
    }
If set to true, headers will ignore horizontal padding.

@param b if true, horizontal padding is ignored by headers
Library/src/com/tonicartos/widget/stickygridheaders/StickyGridHeadersGridView.java