Rangebound: Thanks for your post, i can see the problem i went wrong was that i presumed that each load of an EA would load a separate instance of the DLL, nicely separated from other calls that might be going on. Completely agree with your example. ...

MT4 DLL Memory Pollution

7bit: i have changed the code to not have those couple of global variables, i had not even noticed them until i pasted the code, also with your confirmation that they do persist between calls makes perfect sense as to why it was doing what it was. i ...

MT4 DLL Memory Pollution

Thanks for the reply. Just to 100% confirm that im not getting local/global mixed up, here is the DLL function thats causing the concern: bool get_lotsize(MqlStr* arr1, double *arr2, const RateInfo* rates1, const RateInfo* rates2, double stop_loss) ...

MT4 DLL Memory Pollution

... — Hi Guys, Thanks for all your responses, it is great to have a community with such knowledgeable people contributing. 7bit: If i understand you correctly, you are saying the real problem is the fact that i am calling the arrays by ...

MT4 DLL Memory Pollution