然后,当通过free将该指针传递回来时,我们只需要倒退几个内存字节就可以再次找到这个结构。
Then, when they pass the pointer back via free , we simply back up a few memory bytes to find this structure again.
您不能通过声明为Order的指针来访问它,您也不能将它传递到另外一个希望以Order作为参数的方法。
You can't access it through a pointer declared as an Order, nor can you pass it to another method expecting an Order as an argument.
通过调用 DL_Dxf 对象的 in 函数并将指针传递给一个继承 DL_CreationAdapter 抽象类来打开此文件。
You open the file by calling the in function of the DL_Dxf object and passing a pointer to a class that inherits from the DL_CreationAdapter abstract class.
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