dll问题

[geniusdhc]

我写了一个dll(比如topodll.dll)，每当主程序project1.exe执行到LoadLibrary("aa.dll");的时候，弹出错误：Project project1.exe raised exeception class EFilterError with message 'A class named TdxTreeListColumn already exists'.
点击‘确定‘按钮后， 又出现 Project project1.exe raised exeception class EStackOverflow with message 'Stack overflow'.

如果不选中build with runtime packages 则出现loadlibray总是返回NULL.
有哪位知道这是为什么.