import bpy

class OBJECT_PT_hello(bpy.types.Panel):
    bl_label = "Hello World Panel"
    bl_space_type = 'PROPERTIES'
    bl_region_type = 'WINDOW'
    bl_context = "object"

    def draw(self, context):
        layout = self.layout

        row = layout.row()
        row.alignment = 'RIGHT'
        row.prop(context.object, "display_type", icon='BLENDER')
        row.prop(context.object.lineart, "usage")
        row.prop(context.space_data, "search_filter", icon='VIEWZOOM', text="Test")

        layout.separator()

        row = layout.row()
        row.alignment = 'LEFT'
        row.prop(context.object.lineart, "usage")
        row.prop(context.space_data, "search_filter", icon='VIEWZOOM', text="Test")
        row.label(text="Custom:")
        row.operator("mesh.primitive_cube_add")
        row.prop(context.scene, "use_gravity")

        layout.separator()

        row = layout.column()
        row.use_property_split = True
        row.prop(context.object, "display_type", icon='BLENDER')
        row.prop(context.object.lineart, "usage")
        row.prop(context.space_data, "search_filter", icon='VIEWZOOM', text="Test")

        layout.separator()

        row = layout.row()
        row.prop(context.object, "display_type", icon='BLENDER')
        row.prop(context.object.lineart, "usage")
        row.prop(context.space_data, "search_filter", icon='VIEWZOOM', text="Test")

        layout.separator()

        col = layout.column()
        col.prop(context.object, "display_type")
        col.prop(context.object.lineart, "usage")
        col.prop(context.space_data, "search_filter", icon='VIEWZOOM', text="Test")
        col.label(text="Custom:")
        col.operator("mesh.primitive_cube_add")
        col.prop(context.scene, "use_gravity")


def register():
    bpy.utils.register_class(OBJECT_PT_hello)

def unregister():
    bpy.utils.unregister_class(OBJECT_PT_hello)

if __name__ == "__main__":
    register()