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Thread: [XE7] How to disable items within a TComboBox?


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John Murray

Posts: 12
Registered: 1/22/16
[XE7] How to disable items within a TComboBox?  
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  Posted: Jan 26, 2016 3:33 AM
Essentially, I have a TComboBox that has a list of options for the user and I want to disable/remove certain options based on the selection of a prior TComboBox.

This is what I have at the moment:
        InterventionComboBox->ListItems[InterventionComboBox->Items->IndexOf("[All become healthy weight]")]->Selectable = true;
        InterventionComboBox->ListItems[InterventionComboBox->Items->IndexOf("[% become healthy weight]")]->Selectable = true;
        InterventionComboBox->ListItems[InterventionComboBox->Items->IndexOf("[All become non smoker]")]->Selectable = false;
        InterventionComboBox->ListItems[InterventionComboBox->Items->IndexOf("[% become non smoker]")]->Selectable = false;


I've also tried setting the Enabled property and the Visible property to the desired value but none appear to have the effect of removing the item from the drop-down list when the TComboBox is clicked.
Can someone point me in the right direction here?

Just to be clear as well, I have checked the results of the IndexOf calls and they do give the correct results so it's not the case that the wrong or invalid TListBoxItem is being used
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Helpful Answer (5 pts)
Correct Answer (10 pts)

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