How to group radio buttons LabWindows/CVI

Hi all

I use 3 boxes in my GUI. Only onle is selected at a time where no one is selected. For example, I have three buttons B1, B2 and B3. By default, B2 is selected and (1) if I press B2 it désélectionnera it free, and nobody is selected in this group. (2) if B2 is already chosen and I based on B1, then désélectionnera B2 and B1 will be selected.

Is there why group multiple radio buttons?

-Vishnu

Hi Vishnu,

CVI comes with a custom control called Radio group that you can use for this purpose. It is a custom tree control that you can add to a group of experts. You can locate this control in the control of Toolslib:

If you don't want to use this instrument, it is pretty simple implementation of a group of radio buttons. You can use something like this:

  1. Create controls that must be grouped on the Panel
  2. Create a control array
    CTL int [3];
    CTL [0] = PANEL_RADIOBUTTON1;
    CONT [1] = PANEL_RADIOBUTTON2;
    CTL [3] = PANEL_RADIOBUTTON3;
  3. In the reminder of the command:
    for (i = 0; i< 3;="" i++)="" setctrlval="" (panelhandle,="" ctl[i],="" 0);   ="" turn="" off="" all="">
    SetCtrlVal (panelHandle, control, 1);     Turn on the active radio button

Modify Normal behavior in radio buttons is that one of the group must always be selected. If you want to be able to have no selected control, you can easily customize step 3 to get:

for (i = 0; i< 3;="" i++)="">
If (Control | = ctl [i]) SetCtrlVal (panelHandle, ctl [i], 0);    Disable all controls, different from the active
}

Tags: NI Software

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