calling a dll function with CALL DLL FUNCTION

[donj]

I'm new to installAware....
I have a dll that carries out some custom actions... (eg like registering a service) It's written in native C++ code. The function that I want to call using CALL DLL FUNCTION property is

UINT __stdcall RegisterAction(MSIHANDLE hInstall).

I've tried using
Call DLL Function $TARGETDIR$\\CtInst.dll->RegisterAction

is this the correct way to call this function?
and if not what is the correct way of calling?
any help would be appreciated...

[MichaelNesmith]

Please do not cross post - there is an identical thread in the Plug-Ins forum. Thank you!