Changeset 13 for Common/ExtTools.cs

Timestamp:

Feb 8, 2021, 4:23:17 PM (3 years ago)

Author:

chronos

Message:

• Modified: Fixes to existing classes.
• Added: File type association method.
• Added: RecentFiles and Table classes.

File:

• Common/ExtTools.cs (modified) (5 diffs)

Common/ExtTools.cs

@@ -1 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
+using System;
 using System.IO;
 using System.Diagnostics;
 using System.Windows.Forms;
+using Microsoft.Win32;
+using System.Runtime.InteropServices;
 
 namespace Common
@@ -12 +10 @@
     static class ExtTools
     {
-        public static string compareProgram;
-        public static string compareAttributes;
+        public static string CompareProgram;
+        public static string CompareAttributes;
 
         static ExtTools()
         {
             // Autodetect location of Beyond Compare executable
-            compareProgram = "C:\\Program Files\\Beyond Compare 4\\BCompare.exe";
-            if (!File.Exists(compareProgram)) compareProgram = "C:\\Program Files (x86)\\Beyond Compare 4\\BCompare.exe";
-            if (!File.Exists(compareProgram)) compareProgram = "C:\\Program Files\\Beyond Compare 3\\BCompare.exe";
-            if (!File.Exists(compareProgram)) compareProgram = "C:\\Program Files (x86)\\Beyond Compare 3\\BCompare.exe";
+            CompareProgram = "C:\\Program Files\\Beyond Compare 4\\BCompare.exe";
+            if (!File.Exists(CompareProgram)) CompareProgram = "C:\\Program Files (x86)\\Beyond Compare 4\\BCompare.exe";
+            if (!File.Exists(CompareProgram)) CompareProgram = "C:\\Program Files\\Beyond Compare 3\\BCompare.exe";
+            if (!File.Exists(CompareProgram)) CompareProgram = "C:\\Program Files (x86)\\Beyond Compare 3\\BCompare.exe";
 
-            compareAttributes = "\"<<left_file>>\" \"<<right_file>>\"";
+            CompareAttributes = "\"<<left_file>>\" \"<<right_file>>\"";
         }
 
@@ -29 +27 @@
         {
             return Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + "\\" + 
-                System.Windows.Forms.Application.ProductName + "\\Temp";
+                Application.ProductName + "\\Temp";
         }
 
@@ -51 +49 @@
             {
                 // Execute comparison process
-                string atts = compareAttributes;
-                atts = atts.Replace("<<left_file>>", filenameLeft);
-                atts = atts.Replace("<<right_file>>", filenameRight);
-                ExecuteProgram(compareProgram, atts);
+                string attributes = CompareAttributes;
+                attributes = attributes.Replace("<<left_file>>", filenameLeft);
+                attributes = attributes.Replace("<<right_file>>", filenameRight);
+                ExecuteProgram(CompareProgram, attributes);
             } catch (Exception e)
             {
-                MessageBox.Show(e.Message.ToString());
+                MessageBox.Show(e.Message);
             }
         }
 
-        public static void ExecuteProgram(string executableFileName, string arguments, string workingDirectory = "")
+        public static void ExecuteProgram(string executableFileName, string arguments = "", string workingDirectory = "")
         {
             // Execute external process
@@ -106 +104 @@
             }
             return output;
-        }        
+        }
+
+        public static void SetFileAssociation(string extension, string progId, string openWith, string fileDescription)
+        {
+            RegistryKey BaseKey;
+            RegistryKey OpenMethod;
+            RegistryKey Shell;
+            RegistryKey CurrentUser;
+
+            BaseKey = Registry.ClassesRoot.CreateSubKey(extension);
+            BaseKey?.SetValue("", progId);
+
+            OpenMethod = Registry.ClassesRoot.CreateSubKey(progId);
+            OpenMethod?.SetValue("", fileDescription);
+            OpenMethod?.CreateSubKey("DefaultIcon")?.SetValue("", "\"" + openWith + "\",0");
+            Shell = OpenMethod?.CreateSubKey("Shell");
+            Shell?.CreateSubKey("edit")?.CreateSubKey("command")?.SetValue("", "\"" + openWith + "\"" + " \"%1\"");
+            Shell?.CreateSubKey("open")?.CreateSubKey("command")?.SetValue("", "\"" + openWith + "\"" + " \"%1\"");
+            Shell?.Close();
+            OpenMethod?.Close();
+            BaseKey?.Close();
+
+            // Delete explorer override
+            CurrentUser = Registry.CurrentUser.OpenSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\FileExts\\" + extension, true);
+            CurrentUser?.DeleteSubKey("UserChoice", false);
+            CurrentUser?.Close();
+
+            // Tell explorer the file association has been changed
+            SHChangeNotify(0x08000000, 0x0000, IntPtr.Zero, IntPtr.Zero);
+        }
+
+        [DllImport("shell32.dll", CharSet = CharSet.Auto, SetLastError = true)]
+        public static extern void SHChangeNotify(uint wEventId, uint uFlags, IntPtr dwItem1, IntPtr dwItem2);
     }
 }