account-financial-tools/account_credit_control/wizard/credit_control_printer_view.xml

<openerp>
  <data>

    <record id="credit_line_printer_form" model="ir.ui.view">
      <field name="name">credit.line.printer.form</field>
      <field name="model">credit.control.printer</field>
      <field name="type">form</field>
      <field name="arch" type="xml">
        <form>
          <separator colspan="4" string="Print the selected lines"/>
          <newline/>
          <field name="mark_as_sent" colspan="4" attrs="{'invisible': [('state', '=', 'done')]}"/>
          <newline/>
          <field name="line_ids" colspan="4" nolabel="1"
            attrs="{'invisible': [('state', '=', 'done')]}" />
          <field name="report_file" colspan="4" attrs="{'invisible': [('state', '!=', 'done')]}"/>
          <field name="state" invisible="1" />
          <newline/>
          <group colspan="4">
            <button special="cancel" string="Cancel" icon='gtk-cancel' attrs="{'invisible': [('state', '==', 'done')]}"/>
            <button name="print_lines" string="Print" type="object" icon="gtk-execute" attrs="{'invisible': [('state', '==', 'done')]}"/>
            <button special="cancel" string="Close" icon='gtk-close' attrs="{'invisible': [('state', '!=', 'done')]}"/>
          </group>
        </form>
      </field>
    </record>

    <!-- for menu -->
    <act_window name="Print Lines"
                res_model="credit.control.printer"
                src_model="credit.control.line"
                view_mode="form"
                target="new"
                key2="client_action_multi"
                id="open_credit_line_printer_wizard_menu_action"/>

    <record id="open_credit_line_printer_wizard" model="ir.actions.act_window">
      <field name="name">Print Lines</field>
      <field name="res_model">credit.control.printer</field>
      <field name="src_model">credit.control.line</field>
      <field name="view_type">form</field>
      <field name="view_mode">form</field>
      <field name="view_id" ref="credit_line_printer_form"/>
      <field name="target">new</field>
      <field name="help">Print selected lines</field>
    </record>

  </data>
</openerp>