color-when-idle

Arguments: split-bar

Returns the color-when-idle property of a split-bar widget. The value may be set at creation time by passing the :color-when-idle initarg to make-instance, or any time later by call (setf color-when-idle).

This is the color of the split-bar widget when it is not being dragged and it is not under the mouse cursor.

The value may be either an RGB color object (see make-rgb), or a constant symbol or global variable whose value is an RGB, or nil to use the system-edge-shadow-color, or else t to match the parent window's background color, making the split-bar invisible. The value may be set at creation time by passing the :color-when-idle initarg to make-instance, or any time later by call (setf color-when-idle).

The default value is t to avoid distracting the user with an always-visible split-bar. The changing mouse cursor when the mouse moves over a split-bar indicates that a drag can be done there, even when the split-bar itself cannot be seen.

When changing this property from the default value of nil to something else, you will probably want to also change the color-under-mouse property, or else the split-bar would confusingly disappear when the user moves the mouse over it.

If drawing the split-bar as a simple colored line is not adequate, then an on-redisplay function could be supplied to draw the split-bar in a custom way.

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This page is new in the 8.2 release.
Created 2016.6.21.