'commit'

WordAddIn/WpsInstaller/Program.cs

@@ -121,6 +121,102 @@ namespace WpsInstaller
             Pause();
         }
 
+        static void UninstallOldVersions()
+        {
+            Console.WriteLine("Checking for existing versions to uninstall...");
+            
+            // 1. Cleanup VSTO Keys
+            CleanupVstoKeys();
+
+            // 2. Cleanup WPS Keys
+            CleanupWpsKeys();
+
+            // 3. Cleanup COM Registration (WPS)
+            UnregisterCom("{D8E52004-9D68-4509-8A11-66774D4F0523}", "WordAddIn.WpsAddIn");
+        }
+
+        static void UnregisterCom(string guid, string progId)
+        {
+            try
+            {
+                // Try to find CodeBase from HKCR\CLSID\{GUID}\InprocServer32
+                string clsidKeyPath = @"CLSID\" + guid;
+                string inprocKeyPath = clsidKeyPath + @"\InprocServer32";
+                string oldDllPath = null;
+
+                using (RegistryKey key = Registry.ClassesRoot.OpenSubKey(inprocKeyPath))
+                {
+                    if (key != null)
+                    {
+                        oldDllPath = key.GetValue("CodeBase") as string;
+                        if (string.IsNullOrEmpty(oldDllPath))
+                        {
+                            oldDllPath = key.GetValue("") as string; // Default value
+                        }
+                    }
+                }
+
+                if (!string.IsNullOrEmpty(oldDllPath))
+                {
+                    // Fix file:/// prefix if present
+                    if (oldDllPath.StartsWith("file:///", StringComparison.OrdinalIgnoreCase))
+                    {
+                        oldDllPath = oldDllPath.Substring(8).Replace('/', '\\');
+                    }
+
+                    if (File.Exists(oldDllPath))
+                    {
+                        Console.WriteLine("  Found old COM registration pointing to: " + oldDllPath);
+                        Console.WriteLine("  Unregistering assembly...");
+                        
+                        string regAsmPath = GetRegAsmPath();
+                        if (!string.IsNullOrEmpty(regAsmPath))
+                        {
+                            string args = string.Format("\"{0}\" /u /tlb", oldDllPath);
+                            ProcessStartInfo psi = new ProcessStartInfo(regAsmPath, args);
+                            psi.UseShellExecute = false;
+                            psi.RedirectStandardOutput = true;
+                            psi.CreateNoWindow = true;
+
+                            using (Process p = Process.Start(psi))
+                            {
+                                string output = p.StandardOutput.ReadToEnd();
+                                p.WaitForExit();
+                                // Console.WriteLine(output); // Optional: show output
+                            }
+                            Console.WriteLine("  [OK] RegAsm /u completed.");
+                        }
+                    }
+                    else
+                    {
+                        Console.WriteLine("  Old COM DLL not found at: " + oldDllPath + ". Skipping RegAsm /u.");
+                    }
+                }
+
+                // Force delete registry keys to be sure
+                try
+                {
+                    Registry.ClassesRoot.DeleteSubKeyTree(clsidKeyPath, false);
+                    Console.WriteLine("  [OK] Deleted HKCR\\" + clsidKeyPath);
+                }
+                catch {}
+
+                try
+                {
+                    if (!string.IsNullOrEmpty(progId))
+                    {
+                        Registry.ClassesRoot.DeleteSubKeyTree(progId, false);
+                        Console.WriteLine("  [OK] Deleted HKCR\\" + progId);
+                    }
+                }
+                catch {}
+            }
+            catch (Exception ex)
+            {
+                Console.WriteLine("  Warning during COM unregistration: " + ex.Message);
+            }
+        }
+
         static void Pause()
         {
             Console.WriteLine("\nPress any key to exit...");