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我想使用目录浏览器。我正在使用ExportHelper该类,但它会弹出一个文件浏览器。把它变成目录浏览器有什么特别的吗?

这是一些代码:

class ExampleExporter(bpy.types.Operator, ExportHelper):
  """My Mesh Exporter Script"""
  bl_idname      = "object.example_mesh_exporter"
  bl_label       = "Example Mesh Exporter"
  bl_description = "Export all meshes from the scene into a directory"
  bl_options     = {'REGISTER'}

  filename_ext   = ".huhu" # I don’t even need that

  sparse = BoolProperty (
      name        = "Sparse output"
    , description = "Should the output file be sparse?"
    , default     = False
    , )

  def execute(self, context):
    # do something with self.filepath

我不需要self.filepath,我需要类似的东西self.directory.

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