Re : NIDAQmx_NewPhysChanAOCtrl

[jrbecker]

I have just received an USB-6008 and saw this function used in a NI example, but can not find a function description anywhere on the included CD or this site or using Google.  Can anyone provide that?

[Julien_31]

Hello,

> You can find this function prototype in "daqmxioctrl.h" header file, so I guess that the NI example you are talking about includes this file at the beginning ---> #include "daqmxioctrl.h"

> This function description is :

This function creates a new DAQmx IO control for selecting analog output channels.

An existing String Control ID must be passed to this function.

Prototype :

int NIDAQmx_NewChannelAOCtrl (int Panel_Handle, int Control_Handle, int Allow_multiple_selection);

> If you need to see this function description, you can :

1) load the corresponding instrument in CVI

2) Navigate through the navigator to the instrument directory

3) Select the instrument -> It appears in CVI

4) Right-click on the function to display its menu and then, select "Function Help..."

[Julien_31]

Oups sorry, I described NIDAQmx_NewChanAOCtrl function instead of NIDAQmx_NewPhysChanAOCtrl function...But now you know how to get the information you are looking for ! 😉

[RobertoBozzolo]

This instruction pertains to the NIDAQmx I/O Controls instrument, which is probably loaded into the Instrument menu by the example project. It is not part of DAQmx driver, it's a supplementary instrument that facilitates the creation of user interfaces.

The instrument is located in <National Instrument folder>\Shared\CVI\toolslib\custctrl folder.

As described in the help,

This instrument contains functions for creating DAQmx IO controls.

A DAQmx IO control provides a convenient means for selecting DAQmx tasks, channels, scales, devices, terminals, switches and relays. The control offers access to the current DAQmx system configuration through a drop down menu and dialog, or you can enter your own configuration in the string portion of the control.

A DAQmx IO control is created from an existing string control.