Retrieves the child control that is located at the specified coordinates, specifying whether to ignore child controls of a certain type.
检索位于指定坐标的子控件，并且指定是否忽略特定类型的子控件。
Retrieves the child control that is located at the specified coordinates, specifying whether to ignore child controls of a certain type.
检索位于指定坐标的子控件，并且指定是否忽略特定类型的子控件。
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