Bring other program to the front

I m trying to bring another Windows exe to the front during part of my test.

I have tried the examples that use the method Find the Handle of an Open Window and Bring to Front 

But using user32.dll does not seem to work for a 64 bit Windows executable. 

user32.dll will return the window handle but it will not raise it to the foreground.

Is there a "user64.dll" that provides the same functionality for 64 bit Windows executables?