wix - Copy an entire directory and all of its contents

My wix installer needs the co开发者_开发百科ntents of a directory to be copied to a destination folder. I understand that the Directory element has a FileSource attrib. I tried something like this:

<DirectoryRef Id="DIRECTORY" FileSource="{var.Dir}">
  <Component Id="Dir" Guid="*" >
    <CreateFolder/>
  </Component>
</DirectoryRef>

This is not picking up the files or sub-directories from the preprocessor variable.

Are there any alternate ways to achieve this?

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No, not unless you use a custom action. WiX likes for every file to be tracked individually. You can use heat to generate the directory listing for you.

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Use heat.exe or HeatTask in MSBuild. That's the only way to do things today.