Calling a DLL with a form from LabVIEW 7.1

[dotan]

I have written a DLL in Borland C++ that creates a form and shows some useful information in regard to a device. I can call the DLL from LabVIEW, although the problem I have is that the excution does not go back to LabVIEW until I close the form. I'd like to manipulate the Form from LabVIEW. Any idea how to do that?

[Lycangeek]

Once you call out of LV, that thread is lost to our scheduler until it returns. However, you can select one of the other threads of executions so that LV remains responsive. Put the Call Library Node in its own VI and then go to VI Properties->Execution and select a different execution thread ("Preferred Execution System") from the rest of your application (something like other1 that you didn't select elsewhere).