Frame Titles

Every frame has a title; most window managers display the frame title at the top of the frame. You can specify an explicit title with the name frame property. But normally you don't specify this explicitly, and Emacs computes the title automatically.

Emacs computes the frame title based on a template stored in the variable frame-title-format.

Variable: frame-title-format

This variable specifies how to compute a title for a frame when you have not explicitly specified one.

The variable's value is actually a mode line construct, just like mode-line-format. See section The Data Structure of the Mode Line.

Variable: icon-title-format

This variable specifies how to compute the title for an iconified frame, when you have not explicitly specified the frame title. This title appears in the icon itself.

Variable: multiple-frames

This variable is set automatically by Emacs. Its value is t when there are two or more frames (not counting minibuffer-only frames or invisible frames). The default value of frame-title-format uses multiple-frames so as to put the buffer name in the frame title only when there is more than one frame.

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