Win10 file management plus toolbar to add "share" button

As long as you select the appropriate file in the file manager, click the "share” button to open the shared Charm on the right. Currently in the Win10 Technology Preview, Microsoft has added the "Share" button (a black share button) to the File Explorer toolbar "Share".

Windows10
For example, if you choose an image file, click Share to send it as an email attachment, or share it to Facebook or Twitter (provided you install these apps). Microsoft said that this feature is still in its early stages and needs to be improved. If you are a developer, you can pay attention to the development of Share Contract.
The current Win10 feature relies heavily on shared Charm, which Microsoft says will continue to improve the Charm interface. Also, clicking twice from the toolbar to share is a bit more than that.
Microsoft's CHARM will be used in the latest disclosures of the Windows 8 operating system. On the touchpad Windows 8 operating system, sliding the display from the right hand direction can display the CHARM function. In traditional keyboard and mouse systems, this feature is accessible in the lower left corner of the display.
CHARM features include: Search, allowing users to search for this operating system or all applications. Sharing, applications that use search contracts can share data through this feature. Start by letting the user return to the start screen. Device that displays the connected hardware device. Settings, display application settings and brightness, volume, and off selection.