If you've ever had to write any interop code to use an unmanaged library in your C# application, you know how tricky it can be to get the data types correct. I often find myself scouring the internet looking for the correct conversions, so I thought I would document everything I have learned so far. This is by no means a comprehensive list of all C++ data types, just the ones I find myself frequently writing interop code for.

If I am missing something, or you would like me to include something else, please let me know in the comments below. Thanks!

I am very happy to announce the release of DisplayFusion 3.1.8! Despite this being a small point release, it is jam-packed with new features and bug fixes. There's something for everyone! The official DisplayFusion Change Log contains a long, boring list of things that have changed, so I'll do my best to summarize the most exciting things here.

There are a pile of new features:

• Added a "Don't snap windows while 'Shift' is pressed" option
• Added a "Pause wallpaper changes while on battery power" option
• Added a new HotKey and TitleBar Button: "Toggle Window Always on Top"
• Added a new HotKey and TitleBar Button: "Move window to monitor #X"
• Added a new HotKey and TitleBar Button: "Move all windows to monitor #X"
• Vladstudio random image changer now chooses from all the images, not just the newest 100 images
• Improved taskbar button dragging
• Wallpaper and Settings windows now open on the monitor the mouse cursor is currently on
• Wallpaper window now automatically re-sizes itself to fit on smaller resolution monitors (like netbooks)
• Wallpaper images can now be scaled by a certain percent to enlarge or shrink the image
• Added new options for middle-clicking taskbar buttons on the DisplayFusion taskbars

What a party! Of course, a new release wouldn't be complete without a generous helping of bug fixes as well. Let's take a look at some of the more important fixes:

• Taskbar compatibility improvements: Stardock DeskScapes, Stardock WindowBlinds, Winamp, Microsoft Office 2007/2010
• TitleBar Button compatibility improvements: Stardock DeskScapes, Stardock WindowBlinds, Trillian Astra, LogMeIn Hamachi, Google Chrome, Opera 10.50
• TitleBar Buttons no longer disappear when partially hidden by another window
• TitleBar Button glow effect is now much improved, no longer flickers (Windows 7, Vista)
• Taskbar buttons no longer show double ampersands
• Taskbar is correctly adjusted when another docked application is closed (no more gaps along the monitor edge)
• Taskbar colour is now almost perfect when Windows Aero translucency is disabled
• When a taskbar is set to auto-hide, the taskbar is now shown when a taskbar button starts flashing

I would encourage everyone to update to the new version today. If you are already a DisplayFusion Pro user, you have probably already downloaded and installed the new update automatically, because DisplayFusion Pro can do awesome things like that.

If you are using the Free version of DisplayFusion, and would like to help support the future development of DisplayFusion, please consider purchasing your very own DisplayFusion Pro license. It helps cover the cost of web hosting, bandwidth, development/testing/support time along with purchasing all of the crazy hardware needed to test DisplayFusion in different configurations.

Thanks everyone, and I hope you continue to enjoy DisplayFusion!

I am very happy to announce the release of DisplayFusion 3.1.7! This new version brings a pile of changes and bug fixes along with it. It has more changes than any version since the main 3.1 release almost 6 months ago. It brings with it a completely overhauled Wallpaper window, a new Compatibility tab in the Settings window and more Context Menu options when right-clicking on a DisplayFusion Taskbar.

Here are some of the large new features:

• Window Snapping to other application windows (not just monitor edges)
• Can show an optional monitor selector when dragging maximized windows
• The new Compatibility tab in the Settings window can help you tweak DisplayFusion features on a per-application basis
• 5 new languages come bundled with the installer, for a total of 10 installed languages
• There are 5 new Advanced Settings for people who want a bit more tweakability

There are some changes to existing features as well:

• The "Move Next/Previous" HotKeys now treat monitors in their logical order, not just the numeric order that Windows assigns
• Right-clicking any of the TitleBar Buttons gives you access to the standard DisplayFusion Context Menu
• All DisplayFusion windows now respond correctly when you press Enter or Esc, and important functions have a key accelerator assigned (Alt + key)
• The random wallpaper changer can be paused automatically when a specific application is detected by using the new Compatibility tab

Of course, there are many important bug fixes as well:

• Better Taskbar and TitleBar Button compatibility with a range of applications
• Taskbar text rendering is much cleaner, and looks more like the Windows taskbar in Vista and Win7
• Taskbar and TitleBar Buttons now supports hacked themes in Windows XP, Vista and Win7 (hacked uxtheme.dll)
• DisplayFusion is much quicker to respond when a monitor is added or removed when re-adjusting wallpaper, taskbars... etc
• Improved fullscreen application detection for pausing system hooks (if enabled)
• Huge quality improvements in the TitleBar Button rendering when Font Scaling is enabled in Windows
• System tray notification balloon text is no longer truncated incorrectly when displaying notification messages
• Taskbar Preview Thumbnails now show the correct spreadsheet window with Excel 2003 and 2007

Believe it or not, there are still dozens of other fixes and enhancements that made it into this release as well. If you would like to see the full list of changes, please visit the DisplayFusion Change Log. I would like to send out a huge Thank You to everyone who helped with this new version. From the hundreds of people who submitted bug reports and feature requests, to the dozens of beta testers in the DisplayFusion Forum, to the dozens of people who contribute to one of DisplayFusion's 25 different language translations. This new version wouldn't have been possible without you!

Some of the new features are for DisplayFusion Pro users only, like the application window edge snapping. If you are currently a DisplayFusion Free user and would like to help support this application, I would encourage you to check out what the Pro version has to offer. With Multi-Monitor Taskbars, random wallpaper changers, and enhanced TitleBar Button and HotKey support, the $25 Pro version is worth every penny. But, of course, I'm biased so why not try it out for free with a 30 day trial license.

I would encourage everyone to update to the new version today to take advantage of the increased performance, stability and new features. Thanks everyone!

Did you know there are more than a dozen hidden settings that you can use to configure DisplayFusion that aren't available in Settings window? There are 4 settings just to control the appearance of the taskbar thumbnail preview windows. You can adjust their size, delay, animation behaviour and toggle the tooltips. If you are using 4 or more monitors, you may want to change the order that DisplayFusion treats your monitors. With the advanced settings you can change this order. You can find out more about these hidden settings on the DisplayFusion Advanced Settings page. These settings are recommended only for people who are comfortable using regedit to edit their registry. If that is you, I encourage you to see how you can fully customize DisplayFusion.

Help us celebrate the New Year with a DisplayFusion sale! You can save 50% off any DisplayFusion purchase from now until Tuesday, January 5th. Visit the DisplayFusion Purchase page to view more information about the sale. This discount applies to any licenses purchased, including multi-license purchases and site licenses. Any site licenses that are quoted during the sale will be quoted at 50% off, and the quote will be honoured for up to 45 days. Here are some sample prices for different license quantities:

• 1 License: $12.50
• 2 Licenses: $10.00 each
• 3 or more Licenses: $8.75 each
• 5 or more Licenses: $7.50 each

If you have been waiting for a good time to pickup some DisplayFusion licenses for your computers, now is your chance. You can buy 5 licenses at just $7.50 each, for a total of $37.50. That's under $40 for 5 licenses. This sale is only on until Tuesday, January 5th so don't delay!

Update: This sale is now done. Thanks for helping us ring in the New Year!