Combo box styles

[Jim Short]

How do I keep the text displayed in the edit box from being edited by the user?
What are the differences between styles 0, 1, and 2?
Is there a restriction on when this property can be changed?

Thanks,
Jim

[owenwengerd]

Right-click on a combo box in the editor and select Properties, then check out the "Combo Box Styles" tab. This should help answer your question.

[Jim Short]

Thanks Owen, that works.

But does the following also work?
(dcl_Control_SetComboBoxStyle Onset_Outline_cbTabMachine NewValue [as Integer])

[Fred Tomke]

Hm, that does not work for me in a palette. But I'm not sure if it is a design time property...
Fred

[owenwengerd]

But does the following also work?
(dcl_Control_SetComboBoxStyle Onset_Outline_cbTabMachine NewValue [as Integer])

No, the combo type cannot currently be changed at runtime.  Runtime changes should be possible in the future, but it has to be done by destroying the old combo and creating a new one in its place.

[JBerns]

Since my question is related to this old topic, I thought I would reply to this post.
If I should start a new post due to age, I can.

I am using Open DCL, version 9.2.0.3.

I have created a ComboBox that should only allow the user to select, not edit.

However, using Style = 2 - Drop Down, the control appears disabled (gray).
If I choose Style 0 or 1, the control appears enabled.
Please see attachment.

How can I make the control appear enabled, but allow selection only, no editing?

Thank you for your time and attention. I look forward to your replies.

Regards,
Jerry

[Fred Tomke]

Hello, Jerry, it is neccessary to know the differences between theses styles: Combobox-style means that you can either input text or select a list item. DropDown-style means, that you cannot input any text - you can only select an item from the list. To do so, it is neccessary to fill the list right before. The gray background of a drop-down-styled control underlines that the user cannot input any text. I hope, this makes it a little bit more clear.
With regards, Fred

[JBerns]

Thank you for the quick reply. Fred.

This is my first time using a ComboBox as a select only. I was not expecting the control to change color to gray. It sure looked disabled.

I compared this OpenDCL style to a Visual Basic ComboBox control and it too changes to gray when its DropDownStyle = DropDownList (select only, no edit).

I will inform my users. Thanks again.

Regards,
Jerry