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I have a type LabView created DLL that creates the following structure: typedef struct { int32_t dimSizes[2]; double elt[1]; } DoubleArrayBase; typedef DoubleArrayBase **DoubleArray; void __stdcall SimpleDoubleArray(int32_t Channels, int32_t Points, DoubleArray *DoubleArray); In Delphi have defined the structure as follows: type PDoubleArray = ^DoubleArray; DoubleArray = ^PDoubleArrayBase; PDoubleArrayBase = ^DoubleArrayBase; DoubleArrayBase = packed record dimSizes: array[0..1] of Int32; elt: array[0..0] of Double; end; var procedure SimpleDoubleArray(Channels, Points : Int32; TestDoubleArray: PDoubleArray);stdcall; external DLLDirectory; and call the function : procedure TForm8.btn1Click(Sender: TObject); var TestDoubleArray : DoubleArray; begin SimpleDoubleArray(5,5,@Testdoublearray); end; My question is that when i assign the DoubleArray as the output of a function, how do i read the information that is stored in the TestDoubleArray? In other words, how do i access the DoubleArrayBase record values of dimSizes and elt from the TestDoubleArray variable that i passed to the function? I am basically translating what is done in this post: https://lavag.org/topic/20486-lv-dll-creates-mysterious-doublearray-class/ to a Delphi equivalent.