color-when-dragging

Arguments: split-bar

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

This is the color of the split-bar widget while the user is dragging it to a new position.

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-dragging initarg to make-instance, or any time later by call (setf color-when-dragging).

The default value is nil to draw the split-bar in a default color, to help the user see exactly where they are placing the bar.

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Created 2019.8.20.