[Bug]: Closing last Page in undocked page group prevents addition of further Pages via `KryptonDockingManager.AddToWorkspace` about standard-toolkit

[stigzler]

OK. So I forked this and think I've isolated the issue (the fix, though is sadly beyond me). If I step through following trying to add a new Page to a workspace where the last tabbed Page has been closed, this line and beyond is of interest:

Master source link

A couple of interesting points:

1. cell Visible = false
2. var childMinSize = cell.GetMinSize(); returns Width = -2147483648 Height = -2147483611 (this value not returned when there's a Page in the Cell)

Further investigation into KryptonWorkspaceCell.GetMinSize() shows this gets the negative values from KryptonWorkspaceCell.GetMinSize(ControlCollection controls) where the default return is set to int.MinValue. controls is null therefore these int.min values are returned.

The height value is modified by the first GetMinSize method, thus the discrepancy with Height....

So, I've tired chaging a few things in KryptonDockingSpace.Append such as setting the Cell to visible and using some dummy positive values for childMinSize (removing the negatives) but no dice. I'm wondering whether the problem lies elsewhere as the above implies that the relevant KryptonWorkspaceCell doesn't contain any controls (which if it contained a Page, it should contain a control).

Anyways, burnt out on this issue now and given I don't know the wider architecture, it's hard to troubleshoot. Hope you guys can give this some attention (I appreciate you have a long list!) as it is a bit of a major issue (adding new pages to fully closed document groups).

[stigzler]

I couldn't let it lie, so found a possible solution. See the pull request for details.

[Wagnerp]

@stigzler & @Smurf-IV Is the fix a candidate for v85 as well?

[Smurf-IV]

@stigzler & @Smurf-IV Is the fix a candidate for v85 as well?

Did it "Work" in earlier versions of V80 or V70 ?? If so then yes. - Otherwise no.

[Wagnerp]

@stigzler & @Smurf-IV Is the fix a candidate for v85 as well?

Did it "Work" in earlier versions of V80 or V70 ?? If so then yes. - Otherwise no.

Not in v80.