using int pointer as parameter in dll, but the value of parameter doesnot change

[percy222]

Hello, I have a function in dll as void set(int * a){ (*a)=99;}

And I connect a int32 to the dll. But when I run the vi, the value of int32 does not change. 

As the pic shown below:

[rolfk · Accepted solution]

You connected a control to the DLL parameter. That means the value from the control is passed to the DLL, ... and finito! You need to connect an indicator to the right side of the DLL parameter to see the value returned from the DLL.

[percy222]

Thank you very much!