Creating an Improved WPF TreeView Control

by Avatar Bill Henning (Actipro) - 1 comment
Monday, March 14, 2016 at 8:11pm


Anyone who has worked with the native WPF TreeView knows that its API is difficult to use (compared to the WinForms TreeView) and the performance isn't very good when binding to large large data sets.

We have started developing a completely custom implementation of a TreeView control that isn't based on the native TreeView control.  We'd love to get your input now during our design and prototyping phase on the following items:

  • What are the top 5 built-in features you would like to see implemented in a TreeView?
  • What specific pain points have you encountered with the native WPF TreeView?
  • What features/API would help resolve those pain points?
  • Any other features/functionality you think we should consider?

Please either write our support address with your feedback or join our Slack discussion on the topic and chat right with us.  The benefit of the chat option is that you can see what others are saying and throw in your two cents as well.

TaskWideContactUs TaskWideChatWithUs

WPF Controls 2016.1 Build 631 Released

by Avatar Bill Henning (Actipro)
Friday, March 11, 2016 at 3:27pm


WPF Controls 2016.1 build 631 has been released and is now available for download.  This build contains numerous minor features, updates, and bug fixes across the various WPF control product range. 

It is highly recommended that v2016.1 customers upgrade to this build since it fixes all issues that have been discovered in the major Docking/MDI control updates that were part of the first 2016.1 release.

The first 2016.1 release added new Metro themes that have accent colors, like in the screenshot below.


The QAT buttons on the upper left of the window were originally wider in Office 2016, matching the width of the system minimize, maximize, and close title bar buttons.  However in the most recent Office 2016 update, the QAT button width was reduced and we've updated their size in this build to match.

See the announcement post for the detailed list of enhancements and updates in this build.

Do you want to chat with us about what we're working on next?  Register to join our Slack team and help guide our future development efforts!

TaskLearnMore TaskDownload TaskBuyNow

Chat With Our Development Team Via Slack

by Avatar Bill Henning (Actipro)
Wednesday, March 2, 2016 at 9:21pm


We now offer a way to provide real-time communication between you and our development team, via the free Slack messaging app. The app can be accessed directly in a web browser ( or via Slack's excellent desktop and mobile apps.


The purpose of chat offering is to facilitate interaction with our development team, so that we can collaborate together on new product feature ideas, show screenshots of work-in-progress, and even provide access to preview builds of new features.  This is all designed to allow you to play a larger part in steering our future work.

We currently have Slack channels related to our UI controls, the Code Writer app, and a general tech discussion.

Please note that the Slack channels aren't for technical support or sales-related questions.  Use existing support/sales mechanisms for those.

Requesting Access

Since Slack is geared around private team chats, you must be added to our Actipro team before you can join in the discussion.  All you have to do is click the Request to Join button on our development team chat page and email us the requested info.  We'll add you to our Slack team and you'll receive an invitation in your e-mail.

Whether you are already a licensed customer of our UI controls, just evaluating them, or are a Code Writer user, we'd love to have you get involved in the discussion.


Code Writer App Gets Its Own Twitter Feed

by Avatar Bill Henning (Actipro)
Wednesday, March 2, 2016 at 8:50pm


Many of you are aware that we created a free text and code app named Code Writer that is found in the Windows Store.  It is an excellent tech demo of our commercial SyntaxEditor code editor control (available for all Microsoft UI platforms) and makes a great replacement for Notepad.

We're pleased to announce that we've just created a dedicated @CodeWriterApp Twitter account for the Code Writer app, making it easier to stay on top of the latest app news.


Click the View button above to access the app's Twitter feed and be sure to Follow it!

About Code Writer

A bit of history about the app... Code Writer was one of the first high-quality Windows 8 apps in the Windows Store.  Its user interface was originally optimized and designed for full screen usage, making use of app bars, etc.  While the user interface is still clean and minimalistic, its current UI design needs rethinking for windowed usage in Windows 10. Even with a somewhat dated UI paradigm, the app is consistently rated well over 4 stars, which is a testament to the quality of the app.

We have started working on a revamped UI design for a future Windows 10 version and would love to discuss it with you, our users. Please register to join our Slack team and join the #codewriter channel once added so we can throw around ideas for Code Writer v3.0.

New Hotkeys in Docking/MDI

by Avatar Bill Henning (Actipro)
Friday, February 26, 2016 at 9:59pm


Quickly Selecting a Tab in the Same Container

Did you know that in the new 2016.1 version of our WPF Control's Docking/MDI product, you can quickly access another docking window tab in the same container by pressing Ctrl+[tabnumber]?  This also works in the Docking/MDI beta for Universal Windows.


For instance, in the tabbed MDI screenshot above, if I press Ctrl+2, the Document2.txt document would be selected.  And Ctrl+3 would select Document3.txt.

Ctrl+[tabnumber] will select the "normal" tab that has that tab index.  What if there are pinned tabs though?  Pinned tabs have an unpin button displayed on them and appear first in the tab list.  The same concept applies there but you'd press Ctrl+Alt+[tabnumber], where the tab number there is the tab index within the "pinned" tabs.

The same Ctrl+[tabnumber] keyboard shortcut will even work in docked tool windows when two or more tool windows are attached (tabbed) to each other.

Showing the Tool Window Container Options Menu


The Alt+- keyboard shortcut will show the options menu for the current tool window, when the focused tool window is docked in a tool window container.

Showing the Tabbed Document Context Menu


The Alt+- keyboard shortcut will also show a focused document's context menu when in tabbed MDI.

Showing the Tabbed MDI Document List Menu


The Ctrl+Alt+DownArrow keyboard shortcut will display the document list menu in tabbed MDI.


These keyboard shortcuts are great for end users to be aware of and provide access to common docking functionality, all via the keyboard.

TaskLearnMore TaskDownload TaskBuyNow