Windows API Code Pack 1.1
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Latest commit ae73c12 Feb 1, 2016



NuGet packages (recommended)


See LICENCE for the original licence (retrieved from WebArchive). The library is not developed anymore by Microsoft and seems to have been left as 'free to use'. A clarification or update about the licence terms from Microsoft is welcome, however.

Release notes

See CHANGELOG for latest changes.


When you submit a bug:

  • provide a short example code showing the bug
  • describe the expected behavior/result

Usage notes


If you get the following exception when you instantiate a TaskDialog:

An unhandled exception of type 'System.NotSupportedException' occurred in Microsoft.WindowsAPICodePack.dll

Additional information: TaskDialog feature needs to load version 6 of comctl32.dll but a different version is current loaded in memory.

To fix it, create an application manifest and un-comment the following block section:

  <!-- Enable themes for Windows common controls and dialogs (Windows XP and later) -->
  <!-- <dependency>

Note: you might have to restart Visual Studio as the DLLs seems to be cached in memory and rebuilding your project doesn't seem to be enough in some cases.


The DirectX package will work under x86 and x64 configuration platforms but not for AnyCPU platform (because there is no such platform for C++/CLI projects). Consequently, the package will purposefully fail the build and tell you why it did.

Note: package is here for historical reasons, it is highly recommended to use SharpDX instead.