parameter for DLL not found

[shamaran]

hai guys,

Currently im workin on building a dll in labview 2009 and to be used in labwindows CVI. When i build specification to built the DLL i can see all the input and output parameters(Attach1) but when i wanted to retest the dll that i created again i Labview before use it in CVI i  cannot see the output and input parameters (Attach2)&(Attach3).

Plz do help me to solve this issue. thanks in advance

regards

shamaran

[piggieq]

Hi Shamaran,

When using the Call Library Function Node to call a DLL in LabVIEW, you normally need to add the parameters manually, just as what you experience in your 2nd screenshot.

If a Type Library (*.lib file) is generated together with the DLL, and your DLL uses simple datatype (int, string, etc.), LabVIEW may be able to automatically detect all parameters correctly.

However, I see from your first screenshot that your function prototype has a rather complex list of parameters. That is why you can't get them automatically added in LabVIEW. Please add them manually to use the DLL.

You may also find this KB useful for calling a LabVIEW DLL from CVI.

Let me know if you need more help.

Best regards,

M. Guo

Applications Engineer

NI ASEAN