Repository.InvokeConstructPicker(): None or Cancel?

[Uffe]

Hi all,


Repository.InvokeConstructPicker() allows you to launch an EA-provided dialog to prompt the user to select one or more items from the project's model data, presented in a tree view.

If the user clicks Cancel in this dialog, the method returns 0.

But the dialog's tree view also includes a special "None" node, which allows the user to explicitly select nothing. Selecting this, and clicking OK, also returns 0.

These aren't the same case. If for instance you have a RefGUID tagged value, selecting None means "clear the tag's value" while clicking Cancel means "ignore any selections made in this dialog." The same applies when selecting a Classifier, or any other situation where EA pops this same dialog.

So is there a way to tell these two cases apart when using the API?


/Uffe