Can't get GetDllDirectory() to work?

cpjust · Mar 13, 2007

Hi again,
Now that I can get my program to compile, I always get 0 returned from GetDllDirectory() and the string parameter is an empty string. When I do GetLastError() it reports "The operation completed successfully".

If I replace the GetDllDirectory() with GetModuleFileName(), it actually returns the whole path & filename of the executing program.

So:
1. Why is GetDllDirectory() returning 0 (meaning an error), but then GetLastError() says everything is fine?
2. Why am I getting back an empty string instead of something like "C:\Program Files\..."?

strongm · Mar 13, 2007

What OS?

cpjust · Mar 13, 2007

WinXP Pro SP2
Visual C++ 2003

AaronWang81 · May 24, 2007

You must call SetDllDirectory first.
In MSDN:
The GetDllDirectory function retrieves the application-specific portion of the search path used to locate DLLs for the application.

For detail.
Look for GetDllDirectory and SetDllDirectory in MSDN.

cpjust · May 25, 2007

Too late for the program I was writing, but good to know. Thanks.

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Can't get GetDllDirectory() to work?

cpjust

Programmer

strongm

MIS

cpjust

Programmer

AaronWang81

Programmer

cpjust

Programmer

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