Call DLL custom action limitations??

[jarekp]

Hello,

This is my first post here as I just regirestered to this forum.
I was recently forced (project's requirements) to use InstallShield AdminStudio
and since I was using Wise for past 8 years or so, I'm really confused with this one.

I have a problem with a custom action that I'm trying to implement,
which would be calling my own DLL for certain functionality.

The problem is that I have to pass some DWORD type values to it, as
well as STRING POINTERs and I aslo care for my return to be defined as DWORD type. As far as I can see, IS does NOT allow anything rather than
very few types of values to be passed to or returned from the DLL.

Is there anything I don't know or there's no such possibility with the version I use - InstallShield X Professional - AdminStudio Edition, SP1

I can call the same DLL from within my Wise (5.6) written MSI and it works
like a charm.

Thank you in advance for any hints that I might use.

jj

[Christopher_Pai]

MSI natively only supports DLL FX's that are exported to return a uint and take a MSI Handle as an argument. InstallShield also has a way of defining a "standard dll" where an intermediate bridging DLL is used to call your DLL. Based on the way you described your function declarations I don't think it should pose any problems.