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DLL Talk / Delphi returning buffer of floats?

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TheLion
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Posted: 29th Aug 2005 13:56
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I'm trying to pass an array of floating point numbers from a DLL written in Delphi back into a memblock in DB pro,anyone know how?

Cheers Leo
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IanM
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Posted: 31st Aug 2005 14:17
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Call your delphi function with the address of the memblock, then have delphi write the values there.

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TheLion
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Posted: 31st Aug 2005 18:24
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Yeah, I'm doing that and it seems to be working..Well something coming back into the memory block?

I'm not too clear on Byte,Word,Dword and Float alignments within
memory blocks (the book seems a little vague!)

Bytes 0,1,2,3.4......
Words 0,2,4,6,8......
Dwords 0,4,8,12,16....
Floats 0,4,8,12,16....

So floating point value number 2 in the memory block is at memory offset 4? Or is it automatically incremented, which is it?

Result#=Memblock Float(1,2) or Result#=Memblock Float(1,4)

I think this might be the reason I'm getting #Nan's returned in the memblock buffer.



Regards Leo
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empty
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Posted: 1st Sep 2005 17:15
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Quote: "So floating point value number 2 in the memory block is at memory offset 4? (Result#=Memblock Float(1,4))"

Yes.


Play Nice! Play Basic! Version 1.088
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