How to configure call library function to call function from dll that has struct with arrays.

[Skoda3]

I have this function in dll:

DLL_EXPORT unsigned GetResultSample_Image(void * pHandle, unsigned long zero_based_index_of_result_sample, TestResult_Image * pTestStatus);

The parameter TestResult_Image is defined in .h like this:

struct TestResult_Image
{
uint32_t position;				
uint8_t arrayFixedSize[64];					 
};

 I don't know how can I configure call library function node for struct TestResult_MISImage.

Element arrayFixedSize is an array with 64 bytes. 

Before calling function GetResultSample_Image I have to call function StartTest_Image, that is defined like this:

DLL_EXPORT unsigned long  StartTest_Image(void * pHandle, TestParameters_Image * pTestParameters);

Where TestParameters_Image is defined like this:

truct TestParameters_Image
{
	uint32_t voltage;
	uint32_t resolution1;			
	uint32_t resolution2;			
	uint32_t number_of_image_samples;
};

In this function I define how many images I want from GetResultSample_Image function.

So If I type "number_of_image_samples=5", then the function GetResultSample_image will return 5 elements: TestResult_Image with 5 different elements "arrayFixedSized[64]"

I tried to configure function like this:

But it does not work and the LV crashes every time function is called.

[FiiFaCZ]

 

Hi,

can you upload your code? It's hard to say anything if we don't see what's happening.

With which error LabVIEW ends?

Have you checked these links?

• Forum: Pass structure to Call Library Function Node and change its values inside
• Using Arrays and Strings in the Call Library Function Node