How can I edit programaticly a Panel?

I have a panel that contains a number of buttons.

The number of buttons and text in buttons is believed to change during execution of the program.

I know how to create buttons on the fly using NewCtrl, but have problems erase/edit buttons of filtration.

Is it possible to access the Ctrl object list in a Panel, investigate Ctrl objects and delete or modify the CTRL?

For the moment, I use DiscardCtrl, but this forces me to keep track of objects Ctrl.

Errors in mainting this information are difficult to debug. It would be much simpler if I could access the information that keeps the application.

A magic rule in the CVI is that everything you can do in the editor of the IUR can be done programmatically ar DURATION: it is enough to know the right way to do it! So:

Deleting a control: DiscardCtrl () (you have already discovered)

Aspect of the editing control: almost all operations are performed with SetCtrlAttribute with the appropriate attribute.

The list of controls can be done in this way:

GetCtrlAttribute (panelHandle, ATTR_FIRST_CTRL, & ctrlID);

so that {(ctrlID)

work on the control

....

Get the next control: 0 if the last control in the Panel is

GetCtrlAttribute (panelHandle, ctrlID, ATTR_NEXT_CTRL, & ctrlID)

}

During the analysis of the controls in a Panel, you can collect more details on the control using the

GetCtrlAttribute (panelHandle, ctrlID, ATTR_CTRL_STYLE, &style);)

The list control (buttons, rings...) styles can be found in userint.h

For example, attached is a function that I developed that:

-scans all the controls in a Panel

-all operable controls past between indicator or hot

-skip controls in a variable argument list

To call this function to set all control as hot:

SetParamPanel (panelHandle, 1, VAL_HOT, 0);

To enable all controls as indicator except button exit:

SetParamPanel (panelHandle, 0, VAL_HOT, PANEL_QUIT, 0)

I hope this helps.

Tags: NI Software

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