How to define a controller in vendor cpanel.

Put following sample xml code on your config.xml file to define a controller for vendor cpanel.

<frontend>
    <routers>
        <vendors>
            <args>
                <modules>
                    <vendorscredit before="VES_Vendors">VES_VendorsCredit</vendorscredit>
                </modules>
            </args>
        </vendors>
    </routers>
</frontend>

You need to change the name of <vendorscredit> tag and the extension name VES_VendorsCredit corresponding with your extension.

The controller class must be extended the class VES_Vendors_Controller_Action

class VES_VendorsCredit_Credit_WithdrawController extends VES_Vendors_Controller_Action {
    public function indexAction() {
        $this->loadLayout()->_setActiveMenu('credit')
        	->_title($this->__('Credit'))
            ->_title($this->__('Withdraw'))
            ->_addBreadcrumb(Mage::helper('vendorscredit')->__('Credit'), Mage::helper('vendorscredit')->__('Credit'))
            ->_addBreadcrumb(Mage::helper('vendorscredit')->__('Withdrawal'), Mage::helper('vendorscredit')->__('Withdrawal'));
        $this->renderLayout();
    }