It is cool to have a multi-touch screen monitor, but sometimes we just need to temporary switch off the touch screen function of the monitor to avoid disruption, especially when there is flying insect hitting the screen at night.
In fact, toggling the touch screen function is pretty easy in Windows 7.
Go to Windows > Control Panel > Pen and Touch and select its "Touch" tab.
Uncheck the "Use your finger as input device" option as shown above and click OK, your monitor's touch screen function will be toggled off immediately. To get back the touch screen function, just check back this option and click or tap on OK.