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Home » U++ Library support » TabCtrl » TabCtrl CancelClose No longer work (as intended) (Some recent changes (could be as old as a few years) has broken its intention)

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Re: TabCtrl CancelClose No longer work (as intended) [message #61143 is a reply to message #61130]

Sat, 23 November 2024 19:19

cbpporter is currently offline

cbpporter
Messages: 1427
Registered: September 2007

Ultimate Contributor

cbpporter wrote on Thu, 21 November 2024 08:56

I'm doing a grounds up rewrite of one of the old UI projects as a refresh/modernization and I just arrived at the stage of adding TabCtrl.

Hopefully this time I can make sense of the Close variants and not occasionally still crash...

If not, I'll tell you my findings.

Might have to fork it though. We'll see...

So in the rewrite I went with maximum simplcity, since all the Close methods are confusing.

So far so good, except for one major issue: TabBar has a minimum open tab field (mintabcount) hard coded for 1.

So when I close my last tab, since I do all the internal cleanup, now my internal data has "one less tab" than TabBar. And it crashes, because tab index goes out of bounds.

How are you supposed ot handle this? Never remove the last tab?

I think I saw code in the old version disallowing the closure of the last tab and I thought that is some left over feature. But it looks like it is vital crash protection.

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[Message index]

		TabCtrl CancelClose No longer work (as intended) By: Lance on Sun, 10 January 2021 19:54
		Re: TabCtrl CancelClose No longer work (as intended) By: Lance on Sun, 10 January 2021 19:56
		Re: TabCtrl CancelClose No longer work (as intended) By: Klugier on Sun, 10 January 2021 21:51
		Re: TabCtrl CancelClose No longer work (as intended) By: Lance on Mon, 11 January 2021 00:43
		Re: TabCtrl CancelClose No longer work (as intended) By: mirek on Fri, 22 January 2021 13:09
		Re: TabCtrl CancelClose No longer work (as intended) By: Lance on Fri, 22 January 2021 22:53
		Re: TabCtrl CancelClose No longer work (as intended) By: mdelfede on Sat, 12 February 2022 17:13
		Re: TabCtrl CancelClose No longer work (as intended) By: mirek on Fri, 18 March 2022 11:54
		Re: TabCtrl CancelClose No longer work (as intended) By: mirek on Fri, 18 March 2022 11:59
		Re: TabCtrl CancelClose No longer work (as intended) By: cbpporter on Mon, 10 June 2024 15:33
		Re: TabCtrl CancelClose No longer work (as intended) By: cbpporter on Wed, 12 June 2024 14:11
		Re: TabCtrl CancelClose No longer work (as intended) By: mirek on Sun, 16 June 2024 14:10
		Re: TabCtrl CancelClose No longer work (as intended) By: cbpporter on Mon, 17 June 2024 11:00
		Re: TabCtrl CancelClose No longer work (as intended) By: cbpporter on Thu, 21 November 2024 07:56
		Re: TabCtrl CancelClose No longer work (as intended) By: cbpporter on Sat, 23 November 2024 19:19
		Re: TabCtrl CancelClose No longer work (as intended) By: mirek on Sat, 14 December 2024 17:23
		Re: TabCtrl CancelClose No longer work (as intended) By: Lance on Sat, 14 December 2024 21:24

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TabCtrl.WhenSet is called when app closes

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