What is HXC? HXC is used as the file extension for Windows Help 2 Collection Definition files. .HXC files are XML files that are used to store help documentation's collection definitions. See the sample .HXC file included below.

File Extension: .HXC

MIME Type: text/xml

File Content: Help 2 Collection Definition

.HXC files are Windows Help 2 Collection Definition files. Here is a sample .HXC Help 2 Collection Definition file, NETSDK.HxC:

<?xml version="1.0"?>
<!DOCTYPE HelpCollection>
<HelpCollection
  DTDVersion = "1.0" 
  Id = "FxSDK.2.0" 
  FileVersion = "8.0.41025.0" 
  LangId = "1033" 
  Title = "Microsoft .NET Framework 2.0 SDK Documentation"> 

  <AttributeDef File="NETSDK.HxA"/> 

  <TOCDef File = "NETSDK.HxT" />
  <TOCDef File = "_VS80_Express.hxt" Id = "InsertTOC:VSExpress" /> 

  <KeywordIndexDef File = "NETSDKALinks.HxK" />
  <KeywordIndexDef File = "NETSDKBLinks.HxK" />
  <KeywordIndexDef File = "NETSDKKLinks.HxK" />
  <KeywordIndexDef File = "NETSDKFLinks.HxK" />
  <KeywordIndexDef File = "NETSDKNLinks.HxK" />
  <KeywordIndexDef File = "NETSDKSLinks.HxK" />
  <KeywordIndexDef File = "NETSDKSamples.HxK" />

  <ItemMoniker Name = "!DefaultNamedUrlIndex"      ProgId="HxDs.HxIndex"     
    InitData="NETSDKNamedUrls" />
  <ItemMoniker Name = "!DefaultToc"        ProgId="HxDs.HxHierarchy" 
    InitData="NETSDK.HXT" />
  ...
</HelpCollection>

.HXC Help 2 Collection Definition file sample: Click sample.hxc to download.

Since .HXC files are in XML format, you can use Notepad or any text editor to create or modify them. No special software is needed.

For for information on how to use .HXC Help 2 Collection Definition files, see links below:

• Microsoft Help 2 Reference