--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/internal/mozilla/nsIPrefBranch.d	Fri Jan 02 17:45:10 2009 -0800
@@ -0,0 +1,44 @@
+module dwt.internal.mozilla.nsIPrefBranch;
+
+import dwt.internal.mozilla.Common;
+import dwt.internal.mozilla.nsID;
+import dwt.internal.mozilla.nsISupports;
+
+const char[] NS_IPREFBRANCH_IID_STR = "56c35506-f14b-11d3-99d3-ddbfac2ccf65";
+
+const nsIID NS_IPREFBRANCH_IID= 
+  {0x56c35506, 0xf14b, 0x11d3, 
+    [ 0x99, 0xd3, 0xdd, 0xbf, 0xac, 0x2c, 0xcf, 0x65 ]};
+
+interface nsIPrefBranch : nsISupports {
+
+  static const char[] IID_STR = NS_IPREFBRANCH_IID_STR;
+  static const nsIID IID = NS_IPREFBRANCH_IID;
+
+  enum { PREF_INVALID = 0 };
+  enum { PREF_STRING = 32 };
+  enum { PREF_INT = 64 };
+  enum { PREF_BOOL = 128 };
+
+extern(System):
+  nsresult GetRoot(char * *aRoot);
+  nsresult GetPrefType(char *aPrefName, PRInt32 *_retval);
+  nsresult GetBoolPref(char *aPrefName, PRBool *_retval);
+  nsresult SetBoolPref(char *aPrefName, PRInt32 aValue);
+  nsresult GetCharPref(char *aPrefName, char **_retval);
+  nsresult SetCharPref(char *aPrefName, char *aValue);
+  nsresult GetIntPref(char *aPrefName, PRInt32 *_retval);
+  nsresult SetIntPref(char *aPrefName, PRInt32 aValue);
+  nsresult GetComplexValue(char *aPrefName, nsIID * aType, void * *aValue);
+  nsresult SetComplexValue(char *aPrefName, nsIID * aType, nsISupports aValue);
+  nsresult ClearUserPref(char *aPrefName);
+  nsresult LockPref(char *aPrefName);
+  nsresult PrefHasUserValue(char *aPrefName, PRBool *_retval);
+  nsresult PrefIsLocked(char *aPrefName, PRBool *_retval);
+  nsresult UnlockPref(char *aPrefName);
+  nsresult DeleteBranch(char *aStartingAt);
+  nsresult GetChildList(char *aStartingAt, PRUint32 *aCount, char ***aChildArray);
+  nsresult ResetBranch(char *aStartingAt);
+
+}
+