# Gimp.RunBrushCallback

    function onRunBrushCallback(brush_name: String, opacity: Number(gdouble), spacing: Number(gint), paint_mode: Gimp.LayerMode, width: Number(gint), height: Number(gint), mask_data: ByteArray, dialog_closing: Boolean): void {
    }

brush_name

  Name of the brush

opacity

  Opacity

spacing

  Spacing

paint_mode

  Paint mode

width

  width

height

  height

mask_data

  Mask data

dialog_closing

  Dialog closing?