Device Context Operations

An application can perform the following operations on a device context:

• Enumerate existing graphic objects.
• Select new graphic objects.
• Delete existing graphic objects.
• Save the current graphic objects, their attributes, and the graphic modes.
• Restore previously saved graphic objects, their attributes, and the graphic modes.

In addition, an application can use a device context to:

• Determine how graphics output is translated.
• Cancel lengthy drawing operations (begun by a thread in a multithreaded application).
• Reset a printer to a particular state.

This subsection provides information on the following topics.

• Operations on Graphic Objects
• Cancellation of Drawing Operations
• Retrieving Device Data
• Saving, Restoring, and Resetting a Device Context