This is a patch against jRegistryKey 1.0 so that, if the DLL is not found
in the PATH by the System.loadLibrary call, it looks through the CLASSPATH
for it.

--- RegistryKey.java.orig       Thu Nov  1 16:21:58 2001
+++ RegistryKey.java    Tue Nov 12 22:46:54 2002
@@ -27,6 +27,7 @@
  */
 package ca.beq.util.win32.registry;
                                                                                
+import java.io.File;
 import java.util.Iterator;
                                                                                
 /**
@@ -83,9 +84,48 @@
  * @version 1.0
  */
 public class RegistryKey {
-   // loads the jRegistryKey(.dll) library (must be in the system PATH)
+   // loads the jRegistryKey(.dll) library from PATH or CLASSPATH
    static {
-      System.loadLibrary("jRegistryKey");
+      try {
+        System.loadLibrary("jRegistryKey");
+      } catch (UnsatisfiedLinkError ex) {
+         // didn't find it in our PATH, look for it in CLASSPATH
+        // Jim McBeath <jimmc@globes.com>
+        String cp = System.getProperty("java.class.path");
+        boolean foundIt = false;
+        while (cp.length() > 0) {
+           int x = cp.indexOf(File.pathSeparator);
+           String dir;
+           if (x >= 0) {
+              dir = cp.substring(0,x);
+              cp = cp.substring(x+1);
+           } else {
+              dir = cp;
+              cp = "";
+           }
+           if (dir.length()>4 &&
+               dir.substring(dir.length()-4).toLowerCase().equals(".jar")) {
+              // If the classpath contains a jar file, then we look in the
+              // directory containing the jar file.
+              x = dir.lastIndexOf(File.separator);
+              if (x>0)
+                 dir = dir.substring(0,x);
+              else
+                 dir = ".";
+           }
+           File f = new File(dir,"jRegistryKey.dll");
+           if (f.exists()) {
+              String path = f.getAbsolutePath();
+              System.load(path);       // load JNI code
+              foundIt = true;
+              break;
+           }
+        }
+        if (!foundIt) {
+           // we did not find it in CLASSPATH
+           throw ex;   // throw the can't-find-library exception
+        }
+      }
    } // static
                                                                                
    private RootKey root = RootKey.HKEY_CURRENT_USER;
@@ -321,4 +361,4 @@
    public String toString() {
       return (root.toString() + "\\" + this.path);
    } // toString()
-} // RegistryKey
\ No newline at end of file
+} // RegistryKey