Spotting Custom UI Errors in Visio Add-ins

I have written many COM and VSTO add-ins for Visio, but got confused when a client recently reported that the following Custom UI Runtime Error was appearing. I wasn’t getting the same error on any of my test laptops, so I chatted with my good friend, and fellow Visio MVP, John Goldsmith ( John Goldsmith’s visLog (typepad.co.uk) ). He gave me an excellent tip….

He remembered that he had seen somewhere a setting for displaying UI errors, and after first searching vainly in the Visio UI, we found it in Excel in the Excel Options. This Show add-in user interface errors setting is apparently Office wide, so ticking it meant that it as enabled for Visio desktop too.

And what was the error?

I had simply forgotten that the <Separator /> element in the Ribbon.xml file requires a unique id attribute …

Taking Visio Actions Rows to the limit

I recently (re-)discovered that there is a limit to the number of Actions section rows that will be evaluated for display on the right mouse menu of a Visio shape. I have not hit a limit (yet) for the number of rows that can be added to the Actions section … so why is there…

TimeTable at RMConnect 2022

I was privileged to be invited to the biennial Robins & Morton conference in Orlando recently, where I assisted in presenting TimeTable to the hundreds of attendees there. A single wall-hanger (OPS) TimeTable Visio diagram automatically drawn from #OraclePrimaveraCloud data, is a condensed version of the same data printed as a Gantt chart some six…

SS Plus for Visio enhanced to support non-English PowerPoint Smart Layouts

A while ago, I wrote an add-in for Visio Plan 2, SS Plus, that enhances the PowerPoint export from Visio. This has been working fine for this using Microsoft Office in English, but a problem was recently brough to my attention about non-English users. The problem was that the PowerPoint Smart Layou names are in…

Visio Presentations for the Microsoft Ignite The Tour 2020

Just when we thought the pandemic was coming to an end, another variant appears to scupper our plans. So, resuming in-person events is delayed, and the world isn’t safe until the world is immunised. Therefore, I decided to make the presentations that I was going to be presenting on the abandoned Microsoft Ignite The Tour…

Have multiple alternate languages in the same Visio diagram

I wrote a Visio add-in a few years ago that provides the ability to switch a multi-page Visio diagram between alternative languages. This particular client had just under a hundred pages of process flowcharts, with hyperlinks between the pages. They had to produce this Visio document in seven different languages and got extremely fed-up with…

Visio in Microsoft 365? What’s that?

Now that a version of Visio is being rolled out as part of the commercial subscription of Microsoft 365, what is the difference between it and the Visio Web App that is delivered by Visio Plan 1 and Visio Plan 2 subscriptions? Moreover, can a Visio diagram created by an M365 user be round-tripped with…