Fix of BUG-2951, issues with finding Office installations (#431)

src/Greenshot.Base/Core/PluginUtils.cs

@@ -40,13 +40,85 @@ namespace Greenshot.Base.Core
         private static readonly ILog Log = LogManager.GetLogger(typeof(PluginUtils));
         private static readonly CoreConfiguration CoreConfig = IniConfig.GetIniSection<CoreConfiguration>();
         private const string PathKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\";
+        private static string[] strRootKeys = { @"SOFTWARE\Microsoft\Office", @"SOFTWARE\WOW6432Node\Microsoft\Office" };
         private static readonly IDictionary<string, Image> ExeIconCache = new Dictionary<string, Image>();
 
         static PluginUtils()
         {
             CoreConfig.PropertyChanged += OnIconSizeChanged;
         }
+        /// <summary>
+        /// Clear icon cache
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        public static string GetOfficeExePath(string keyname)
+        {
+            string strKeyName = keyname switch
+            {
+                "WINWORD.EXE" => "Word",
+                "EXCEL.EXE" => "Excel",
+                "POWERPNT.EXE" => "PowerPoint",
+                "OUTLOOK.EXE" => "Outlook",
+                "ONENOTE.EXE" => "OneNote",
+                _ => ""
+            };
 
+            RegistryKey rootKey = null;
+            RegistryKey officeKey = null;
+            RegistryKey programKey = null;
+            RegistryKey installRootKey = null;
+            string retValue = string.Empty;
+
+            foreach (string strRootKey in strRootKeys)
+            {
+                rootKey = Registry.LocalMachine.OpenSubKey(strRootKey);
+
+                if (rootKey != null)
+                {
+                    string[] officeVersions = rootKey.GetSubKeyNames();
+                    if (officeVersions is null)
+                        continue;
+                    officeVersions = Array.FindAll(officeVersions, r => r.Contains("."));
+                    Array.Reverse(officeVersions);
+                    // string latestOfficeVersion = officeVersions.Where(r => r.Contains(".")).Max();
+
+                    foreach (string officeVersion in officeVersions)
+                    {
+                        officeKey = Registry.LocalMachine.OpenSubKey(strRootKey + "\\" + officeVersion);
+
+                        if (officeKey is null)
+                            continue;
+
+                        programKey = officeKey.OpenSubKey(strKeyName);
+
+                        if (programKey is null)
+                            continue;
+
+                        installRootKey = programKey.OpenSubKey("InstallRoot");
+
+                        if (installRootKey != null)
+                        {
+                            retValue = installRootKey.GetValue("Path").ToString() + "\\" + keyname;
+                            break;
+
+                        }
+
+                    }
+
+
+                }
+            }
+            if (rootKey != null)
+                rootKey.Dispose();
+            if (officeKey != null)
+                officeKey.Dispose();
+            if (programKey != null)
+                programKey.Dispose();
+            if (installRootKey != null)
+                installRootKey.Dispose();
+            return retValue;
+        }
         /// <summary>
         /// Clear icon cache
         /// </summary>
@@ -84,7 +156,7 @@ namespace Greenshot.Base.Core
                 if (key != null)
                 {
                     // "" is the default key, which should point to the requested location
-                    return (string) key.GetValue(string.Empty);
+                    return (string)key.GetValue(string.Empty);
                 }
             }
 

src/Greenshot.Plugin.Office/Destinations/ExcelDestination.cs

@@ -42,7 +42,10 @@ namespace Greenshot.Plugin.Office.Destinations
 
         static ExcelDestination()
         {
+            ExePath = PluginUtils.GetOfficeExePath("EXCEL.EXE");
+            if (ExePath == null)
                 ExePath = PluginUtils.GetExePath("EXCEL.EXE");
+
             if (ExePath != null && File.Exists(ExePath))
             {
                 WindowDetails.AddProcessToExcludeFromFreeze("excel");

src/Greenshot.Plugin.Office/Destinations/OneNoteDestination.cs

@@ -41,6 +41,8 @@ namespace Greenshot.Plugin.Office.Destinations
 
         static OneNoteDestination()
         {
+            exePath = PluginUtils.GetOfficeExePath("ONENOTE.EXE");
+            if (exePath == null)
                 exePath = PluginUtils.GetExePath("ONENOTE.EXE");
             if (exePath != null && File.Exists(exePath))
             {

src/Greenshot.Plugin.Office/Destinations/OutlookDestination.cs

@@ -58,7 +58,8 @@ namespace Greenshot.Plugin.Office.Destinations
             {
                 IsActiveFlag = true;
             }
-
+            ExePath = PluginUtils.GetOfficeExePath("OUTLOOK.EXE");
+            if (ExePath == null)
                 ExePath = PluginUtils.GetExePath("OUTLOOK.EXE");
             if (ExePath != null && File.Exists(ExePath))
             {

src/Greenshot.Plugin.Office/Destinations/PowerpointDestination.cs

@@ -45,6 +45,8 @@ namespace Greenshot.Plugin.Office.Destinations
 
         static PowerpointDestination()
         {
+            ExePath = PluginUtils.GetOfficeExePath("POWERPNT.EXE");
+            if (ExePath == null)
                 ExePath = PluginUtils.GetExePath("POWERPNT.EXE");
             if (ExePath != null && File.Exists(ExePath))
             {

src/Greenshot.Plugin.Office/Destinations/WordDestination.cs

@@ -46,6 +46,8 @@ namespace Greenshot.Plugin.Office.Destinations
 
         static WordDestination()
         {
+            ExePath = PluginUtils.GetOfficeExePath("WINWORD.EXE");
+            if (ExePath == null)
                 ExePath = PluginUtils.GetExePath("WINWORD.EXE");
             if (ExePath != null && !File.Exists(ExePath))
             {