Posts Tagged ‘Office’

Inner details of DPI scaling in Office COM add-ins

Today, I’m following Microsoft recommendations and using code fragments they provide to investigate the behavior of a System.Windows.Forms.Form (simply a form)... Read the rest of this entry →

Office COM add-ins and DPI awareness: research and analysis

In the first blog of this series, I showed issues related to using several monitors with different DPIs. To get an explanation of those pretty confusing results, let’s check resources available on the web.... Read the rest of this entry →

Issues with Windows mutli-DPI scaling and Office COM add-in panes and forms

Quite often these days you see this configuration: a notebook and an external display or two connected to the notebook. All these displays may have different DPIs. This is a typical environment where DPI-related issues reveal themselves. ... Read the rest of this entry →

New version of Add-in Express sample COM add-in projects

Quick news: we've developed a new version of sample COM add-in projects that we provide in the downloadable archive on the Add-in Express .NET Downloads page... Read the rest of this entry →

How Add-in Express supports Office 365 / Office 2019

You might already know that Office 365 and Office 2019 are, in fact, subsequent builds of Office 2016: in any Office 365 and Office 2019 application, the Application.Version property returns a string that starts with "16"... Read the rest of this entry →

How to solve synchronization conflict when modifying Outlook item in ItemAdd event

I see this issue in the Sent Items folder on an Exchange account having Cached Exchange Mode turned on. Reportedly, turning the Cached Mode off solves the issue. The Outlook version used (Outlook 365 in my case) seems to be irrelevant as Google reports a similar conflict to occur in Outlook 2007... Read the rest of this entry →

Range.Replace() problems in all Excel versions

Range.Replace() and supposedly Range.Find() may work incorrectly in a scenario we describe on the Excel for Developers forum. A workaround is: change Range.Value directly... Read the rest of this entry →

Add-in Express for Office issues on multiple monitors with different DPI settings

Microsoft has published Office 2016 build 8828.2010 through its Office Insider update channel. That build supports multiple monitors with different DPI settings; the support relies on the API changes provided by Windows 10 Creators Update.... Read the rest of this entry →

Updating Office COM add-ins automatically

To test the example described below, download and run the application installing the sample COM add-in. When the add-in is installed, you start Excel 2000 - 2016 and find the add-in in the UI. Leave Excel open and in a couple of minutes, you'll get a notification suggesting installing an update... Read the rest of this entry →

Introducing automatic updates for Office extensions

Version 8.3 of Add-in Express for Office and .net added support for automatic updates when using ClickTwice – MSI-based web deployment technology, this technology is closely tied with Add-in Express... Read the rest of this entry →

Maptitude is the ideal MapPoint alternative for developers

This is a guest post by Stewart Berry, Director of Product Management at Caliper Corporation, in which he introduces Maptitude - the software designed as direct replacement for Microsoft MapPoint... Read the rest of this entry →

Add-in Express sim-ships with Visual Studio 2015 and Office 2016 Preview

I am happy to report good news to all Add-in Express users – we are one of the Microsoft partners to sim-ship our products together with the Visual Studio 2015 RC and Office 2016 Preview... Read the rest of this entry →

Graphics formats for Microsoft Office add-ins

In today's article, we'll explore the various graphic formats supported by MS Office components and how to make them appear the best they can be.... Read the rest of this entry →

Windows and Office security guide for Office developers

Office add-in security and certificates has always been somewhat of a daunting task. In today's article we'll first investigate code-signing certificates and why they are used. We'll then take a closer look at the Office Trust Center function and settings... Read the rest of this entry →

Office Newswire :: APIs, APIs, APIs!

Bill Gates has said over and over that Office is development platform, and he has always been correct. But, as technology has progressed, Office has remained largely the same (as a desktop productivity suite and a development platform). Sure, the Office team has embraced the web with the Office web apps and the Apps for Office model. But, they were tied to a Windows first strategy... Read the rest of this entry →

Exception from HRESULT 0x800A01A8 in PowerPoint solutions

On an example of a simple scenario, this article demonstrates what causes 0x800A01A8 and how to avoid it in C#, VB.NET, VBA, Delphi. Exception from HRESULT: 0x800A01A8 is also known as OLE error 800A01A8 and also known as Object Required.... Read the rest of this entry →

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