How to transfer data between a multi-thread dll build with LV7 and MS C++, using envent programing method.

[pascalp@thales]

It is easy to transfer data between a simple input/output dll build with LV and an external code like C++, but when data are available inside a loop running in the dll(in fact thread running in LV); How can I read them or receive an handle pointer to the calling C++ application when new data are ready.

[bilalD]

If you're using LabVIEW 7, you can use the PostLVUserEvent function to fire an event for an event structure in LV. Refer to the Using External Code in LV manual.
Or you could use datasocket for this. The datasocket activex dll is nids.dll. You could have the class wizard generate wrappers for you or if you have Measurement Studio, you could use the custom wrappers it provides to communicate between the VI and dll.

I hope this helps

Bilal Durrani
NI