DLL Language

[cjursch]

What language does a DLL have to be written in to be callable from InstallShield script using UseDLL?

[RobertDickau]

I think UseDLL wants a C-callable DLL, which suggests a C or C++ DLL. For .NET libraries there's CoCreateObjectDotNet, and it takes some doing, but (classic) Visual Basic DLLs can be called after CoCreateObject.

[Gvarma]

RobertDickau wrote:
I think UseDLL wants a C-callable DLL, which suggests a C or C++ DLL. For .NET libraries there's CoCreateObjectDotNet, and it takes some doing, but (classic) Visual Basic DLLs can be called after CoCreateObject.

IS CoCreateObjectDotNet object available in IS 12.0?

[RobertDickau]

I believe CoCreateObjectDotNet was introduced in InstallShield 11.5.

[Gvarma]

RobertDickau wrote:
I believe CoCreateObjectDotNet was introduced in InstallShield 11.5.

Can I write just a standard VB6 DLL and be able to call its functions within Installscript MSI project?

TIA

[RobertDickau]

I believe VB6 DLLs use COM, and so in InstallScript you'll need to go through CoCreateObject.