Hello all,

I have a plain Windows DLL made in Visual Studio C++ and working with other C applications. When I try to statically import it into an FPC program I get the following error:

An unexpected error occurred while initializ-
ing an application 0xc0000034

When using it dynamically, the LoadLibrary() func- tion returns NilHandle, indicating failure.

I have checked that my code works with other DLLs -- kernel32.dll for example.

Could you please help me fix make this DLL work with FPC? I can provide both the source and the binary of the DLL and of my program.

Thank you in advnace,
Anton

Both errors indicate that the dll couldn't be loaded. Or the dll itself isn't found, or the dll has dependencies (probably c libraries) that aren't found.

Ludo

I have a plain Windows DLL made in Visual Studio C++ and working with other C applications.

Is there in addition an messagebox shown indicating an problem with C runtime?

If so you probably need an Manifest file for your FPC application

Elmar

Ludo Brands:

Both errors indicate that the dll couldn't be loaded. Or the dll itself isn't found, or the dll has dependencies (probably c libraries) that aren't found.

The DLL does work on another PC, so the problem must be with some dependencies. Many thanks. But how can determine what is missing?

Elmar Haneke:

No, there are no other messages.

Anton

Ludo Brands:

Both errors indicate that the dll couldn't be loaded. Or the dll itself isn't found, or the dll has dependencies (probably c libraries) that aren't found.

OK, I have found the missing dependency using the "Dependency Walker" utility.

Thank you,
Anton