Purpose: collect tips, techniques, and suggestions for making careful use of the Windows registry extension

http://www.purl.org/tcl/home/man/tcl8.4/TclCmd/registry.htm
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[Windows Registry Browser] is an example of use of the registry extension.

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There's more at [Microsoft Windows and Tk].  Among the most interesting:
   * [Register file types under Windows] shows how to choose a file extension and assign it to your application.
   * [Windows: getting desktop properties] shows how to get the attributes of the system desktop so that your app's look and feel can be configured to match.

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[Chin Huang] offers an example:  "this Tcl script lists
the programmatic identifier (ProgID) of all [COM] classes that have a
ProgID.


      package require registry

      set classesRootKey "HKEY_CLASSES_ROOT\\CLSID"
      foreach clsid [registry keys $classesRootKey] {
          set clsidKey "$classesRootKey\\$clsid"
          set progIdSubKey [registry keys $clsidKey "VersionIndependentProgID"]
          if {[llength $progIdSubKey] > 0} {
              set progId [registry get "$clsidKey\\$progIdSubKey" ""]
              puts $progId
          }
      }
"























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