report_gralpos1/report/informe_posgral_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <record id="report_posgral_tree_view" model="ir.ui.view">
            <field name="name">report.posgral.tree.view</field>
            <field name="model">pos.reportgral</field>
            <field name="priority" eval="20"/>
            <field name="arch" type="xml">
                <tree string="Listado General de Punto de Ventas" create="false">
					<field name="id" invisible="1"/>
					<field name="date"/>
					<field name="user_id" invisible="1"/>
					<field name="company_id" invisible="1" group="base.group_multi_company"/>
					<field name="partner_id" invisible="1"/>
					<field name="product_id" string="Producto"/>
					<field name="product_categ_id" invisible="1"/>
					<field name="nbr" sum="# of Lines"/>
					<field name="product_qty" sum="# of Qty" string="Cantidad"/>
					<field name="price_total" sum="Total" string="Total"/>
					<field name="state" invisible="1"/>
          
				</tree>
            </field>
        </record>

		<record id="action_report_posgral_tree_view" model="ir.actions.act_window">
            <field name="name">Listado General de Punto de Ventas</field>
            <field name="res_model">pos.reportgral</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree</field>
        </record>

        <menuitem action="action_report_posgral_tree_view" id="menu_point_of_sale2" parent="point_of_sale.menu_point_rep" sequence="6" />
	</data>
</openerp>