GimpBrushSelectButton @gimpbrushselectbutton: the object which received the signal. @arg1: @arg2: @arg3: @arg4: @arg5: @arg6: @arg7: @arg8: @title: @brush_name: @opacity: @spacing: @paint_mode: @Returns: @button: @opacity: @spacing: @paint_mode: @Returns: @button: @brush_name: @opacity: @spacing: @paint_mode: