delphi中如何用递归调用方式生成树形结构，树的级别不定；生成方法：首先声明树的结点，自定义树的结点内容，写一个递归函数，在窗体的显示事件里调用递归函数，实现树形结构的生成。-how in delphi to use the recursion transfer way production tree structure, tree s rank not to decide　Production method: First stated that tree s point, from the definition tree s point content, writes a recursive function, transfers the recursive function in the window demonstration event, realizes the tree structure production.