You can post drawings made with the Salesforce Chatter canvas directly on to Chatter posts on touch enabled Windows 10 devices.
Create a new Chatter post and tap Draw to launch the canvas.
Once inside the canvas, use the ruler feature for straight lines, or draw with a stylus or finger. Once your drawing is complete tap Attach.
You can share more context for your drawing in the Chatter post, or tag coworkers and groups to share the drawing with them specifically.
Tap Post to share the drawing in your Chatter feed or with a group depending on the audience of your post.