You can send messages to a rich edit control to render its output for a specified device, such as a printer. You can also specify the output device for which a rich edit control formats its text.
To format part of a rich edit control's contents for a specific device, you can use the EM_FORMATRANGE message. The FORMATRANGE structure used with this message specifies the range of text to format as well as the device context for the target device.
After formatting text for an output device, you can send the output to the device by using the EM_DISPLAYBAND message. By repeatedly using the EM_FORMATRANGE and EM_DISPLAYBAND messages, an application that prints the contents of a rich edit control can implement banding. (Banding is division of output into smaller parts for printing purposes).
You can use the EM_SETTARGETDEVICE message to specify the target device for which a rich edit control formats its text. This message is useful for WYSIWYG (what you see is what you get) formatting, in which an application positions text using the default printer's font metrics instead of the screen's.