Visio Accessibility Guide and Webinar

I am pleased to announce that I have a guide to accessibility available to download from VisionUp and I will be presenting a webcast on the subject on 26th September 2019. Registration is now open at the following link :  Introducing Accessibility in Visio.

Visio Accessibility image

 

 

 

 

Testing Visio shape text for WCAG 2.0 pass

The Web Content Access Guidelines (WCAG) 2.0 provides the current recommendations for making web content accessible to users with vision impairment, but how do you test if your Visio shapes pass? There are several web sites out there that provide this capability, but all of them require the HEX values, rather than the RGB or HSL that Visio provides natively. Therefore, I have created a Visio callout shape that can be associated with a target shape to report on the values of each of its main color elements, and provides hyperlinks to automatically check the contrast ratio on WebAIM.

Color Values Shape

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Multiline text in Visio Shape Data

The Shape Data (nee Custom Properties) dialog and window only provides a single line to view or edit text values. It is a great shame because the value can be up to 64k characters, and long text can be pasted into it. I, and many others, have complained about this for many years to Microsoft, but nothing has been done to rectify this. Of course, I do develop custom user interface components for many customers, but that is not always desirable. Therefore I sometimes re-purpose standard Visio elements to provide the ability to view or edit multi-line text in Shape Data rows.

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Writing a WeekNum(…) function for Visio

I needed to display the week number of dates in a Visio project of mine, but there is no WeekNum(…) function built-in, so I had to write one, and allow for the date that the week numbers begin in to be varied from 1st January.  I also needed to allow for the week numbers to go backwards from the specified week number begin date.

Excel has a WeekNum(..) function, which can take an optional parameter for the day of the week to begin on, and an IsoWeekNum(..) function, and the following table shows the values change for the first 35 days of the year:

Excel Week Num Formulas

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Sorry about Brexit

In these days of political uncertainty in the UK, and our position in Europe or the world, there is only one thing that I can say: Sorry about Brexit … in every main language of the EU countries!

Sorry about Brexit Read the rest of this entry »

Using Advanced Installer with Viso VSTO Add-Ins

I have written many add-ins for Visio over the years, some for private clients for use in-house, some as products for public release by my clients or by me, and some just to help me with my day-to-day Visio development tasks. The ease of installation is always an issue, and I have been using a digital certificate to guarantee its authenticity in almost all of these scenarios. I have also included licensing code from a third-party for some of my own products, but have been aware that the third-party product I have been using is not ideal because it needs its own registered component on the client machine. So, when a client asked that I use Advanced Installer to create the installation setups so that their licensing system could be used, then I was (and still am) all for it because it could become a better method for myself. However, there are some issues that I am overcoming through this transition ….not least that an apparently correctly assigned digital certificate was actually not valid.

InvalidDigitalCertificate

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Replacing Images in #Visio Shapes by Changing Data

I wrote an article last year about Swapping Images in a #Visio Shape manually, but I want to be able to do this whenever a Shape Data value changes. This is because I use I invariably use shapes linked to data. I also want to be able to have multiple images within a single grouped shape, and all of them changing when their referenced Shape Data values change. I believe that this will be more adaptable for a lot of scenarios than trying to repurpose Data Graphic Icon Sets ( see  Make Your Own Visio Data Graphic Icons Sets … automatically). I also discovered that the Shape.ChangePicture(…) function can just as easily work with urls as it can with network file paths, so even more possibilities are opened up! For example, the Visio Online JavaScript API has the ability to overlay an image (see ShapeView.addOverlay(…)).

So, I have created some macros to provide quick and easy selection, positioning and updating of images within a group shape.

personphotosbydata

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