Printing from a Metro app in Windows 8 works differently than printing from a Desktop app. So, how do you print from a Metro app?
Printing from a Windows 8 Metro app may throw you for a curve at first. But the process works fine once you get used to it.
For the Windows 8 Release Preview, Microsoft tweaked the way you print content, at least for Metro apps. Instead of choosing a print command from within the app itself, you print using the Charms bar. Selecting the Device charm provides access to your printer, among other devices. From there you can configure the various settings for your print job.
Here's how to print from a Metro app in Windows 8:
On the downside, the new Metro printing process can involve more steps than the traditional printing method where you just click on the File menu and then select Print.
But on the upside, the new print setup works the same across all Metro apps, providing a sense of consistency.
Printing Desktop applications in Windows 8 works the same as it does in previous versions of Windows. So there is a disparity between printing from Desktop apps and printing from Metro apps. But the Metro printing process works cleanly and smoothly for all of your Metro apps.