Hi there, I was trying to call DLL in Labview. The declaration of this DLL in Delphi is: function YL_Write_DO(addr,tunnel,action:PChar):PChar; far;external 'ComDll.dll'; I need to pass Pchar(Pascal String Pointer) type inputs from Labview to the DLL. When I wire a string control to the Call Library Function Node input directly, it prompt error 1097, an exceptional error in the external node. My question is can I pass Pascal String Pointer to the DLL by wiring string control directly? If not, how to do it? I appreciate if somebody provides an example. Regards, Bob Wu

How to pass pascal string pointer to Delphi DLL?

Hi,

Do you finally have a solution to your problems?

Thanks,

Fabrice

Message 11 of 13

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Topic UP,

I have the same problem but no solution with previous posts.

I've tried to Use Length + convert string to U8 array and Pascal string pointer without success ... any advice ?

Message 12 of 13

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Hi,

The most common method is to define the DLL function parameters as CStr.When you call the function node,

double click and set the parameters as C String Pointer.As Below

Message 13 of 13

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