Document Type: Example Program
NI Supported: Yes
Publish Date: Aug 2, 2007

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Products

Software
- LabVIEW
  - LabVIEW Development Systems
    - LabVIEW Full Development System

Data Acquisition
- Multifunction DAQ

Development Topic

Programming Fundamentals
- Communication/Networking
  - Communicating with External Applications
    - ActiveX

Calling LabVIEW from C++ Using ActiveX

13 ratings | 3.46 out of 5

Downloads

Filename: 1643.zip
Requirements: View

This example passes data between LabVIEW and C++ using ActiveX. The C++ program calls LabVIEW as an ActiveX Server and data passes between C++ and LabVIEW. This program uses the Acquire 1 Point from 1 Channel VI, which is a DAQ example VI included with LabVIEW and NI-DAQ.

The type library for LabVIEW 5.x and 6.x are slightly different. Use Aquire5.cpp with LabVIEW 5.x and Aquire6.cpp with LabVIEW 6.x.

Requirements

Filename: 1643.zip

Software Requirements

Application Software: LabVIEW Full Development System 5.0
Language(s): C++, LabVIEW

Hardware Requirements

Hardware Group: Multifunction DAQ (MIO)
Driver: Traditional NI-DAQ (Legacy)

13 ratings | 3.46 out of 5

Reader Comments | Submit a comment »

Mod for LabVIEW 7
The document was very useful!! Please note that, in LabVIEW Version 7.0, the method 'GetVIReference' requires four arguments. Therefore, the line: pVI = pLV->GetVIReference(LPCTSTR(Path), LPCTSTR(Password), 0); Should be replaced with: pVI = pLV->GetVIReference(LPCTSTR(Path), LPCTSTR(Password), 0, 0);
- Mar 21, 2005

Legal
This example program (this "program") was developed by a National Instruments ("NI") Applications Engineer. Although technical support of this program may be made available by National Instruments, this program may not be completely tested and verified, and NI does not guarantee its quality in any way or that NI will continue to support this program with each new revision of related products and drivers. THIS EXAMPLE PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND AND SUBJECT TO CERTAIN RESTRICTIONS AS MORE SPECIFICALLY SET FORTH IN NI.COM'S TERMS OF USE (http://ni.com/legal/termsofuse/unitedstates/us/).