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DarkBASIC Professional Discussion / Problems with DLL return value

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Morcilla
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Posted: 18th May 2003 22:49
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Hi there,
I'm writing a custom DLL that returns a calculated value.

There is no problem with integers, I pass two operands to the DLL and it returns a correct value (integer).

The problem comes if I use float or double:

If I pass two float variables, both arrive ok to the DLL, but the return value (float) is incorrect.

If I pass two double variables, the second operand does not seem to arrive to the DLL (first operand arrives ok). The returned value (double) is not correct.

Has anyone experienced this?
Thanks in advance!
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MrTAToad
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Posted: 18th May 2003 22:57
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With returning of floats, its not as simple as it should/could be - read the technical documents to see how to get around it.
As for two doubles - can't say I have had the problem - have you got the string table correct ?

Good news everyone! I really am THAT good...
http://www.nickk.nildram.co.uk/ for great plug-ins - oh my, yes!
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Morcilla
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Posted: 18th May 2003 23:10
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Well I then got default string table when creating ATL DLL, in other DLL types I do not use it.

I'm looking at the doc now, thanks.
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MrTAToad
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Posted: 18th May 2003 23:13
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No ATL DLL's can be used either.

Good news everyone! I really am THAT good...
http://www.nickk.nildram.co.uk/ for great plug-ins - oh my, yes!
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IanM
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Posted: 19th May 2003 01:11
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Are you using C or C++? In that case, try using this function to return your value



You would use it like this:

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Morcilla
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Posted: 19th May 2003 13:36
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Well, I'm using VC++. After populating the string table correctly, it seems to work much better.
No problems with double values.
Thanks anyway IanM, that could be useful.
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