MT4 ，可以获取用DLL返回的值吗 ！？可以读取文件吗，可以得到URL的值吗！？

You can study our examples in the client terminal folder:
/MetaTrader 4/experts/samples/DLLSample/ - VC++6.0 source code of a DLL example,
/MetaTrader 4/experts/samples/include/sampledll.mqh - a header file,
/MetaTrader 4/experts/samples/libraries/ExpertSample.dll - an external DLL file
/MetaTrader 4/experts/samples/ExportFunctions.mq4 - MQL4 expert advisor program.

严重谢谢！

可以的