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Calling external dll files from Dynamics AX

In this example, we will use the Beep function of kernel32.dll. This function needs two parameters:



BOOL Beep(DWORD dwFreq,DWORD dwDuration);



The AX Code is



static void ExtDLL(Args _args)
{

    DLL winApiDLL = new DLL('kernel32');

    DLLFunction Function = new DLLFunction(winApiDLL,'Beep');



  Function.arg(extTypes::DWord,extTypes::DWord);
  Function.call(400,1000);

}



Run this and you will hear a beep.
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