From 937b722ad2264ba804f647896472f1bbe15eba75 Mon Sep 17 00:00:00 2001
From: cjee21 <77721854+cjee21@users.noreply.github.com>
Date: Wed, 15 Jan 2025 12:49:16 +0800
Subject: [PATCH] ShellExt: Option for separate instance (VCL)

---
 Source/GUI/VCL/GUI_Preferences.cpp | 31 ++++++++++++++++++++++++++++++
 Source/GUI/VCL/GUI_Preferences.dfm | 12 +++++++++++-
 Source/GUI/VCL/GUI_Preferences.h   |  1 +
 3 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/Source/GUI/VCL/GUI_Preferences.cpp b/Source/GUI/VCL/GUI_Preferences.cpp
index a2c2cdbca..a44898258 100644
--- a/Source/GUI/VCL/GUI_Preferences.cpp
+++ b/Source/GUI/VCL/GUI_Preferences.cpp
@@ -343,6 +343,18 @@ void __fastcall TPreferencesF::Language_EditClick(TObject *Sender)
 void __fastcall TPreferencesF::OKClick(TObject *Sender)
 {
     Prefs->Config.Save();
+    if (CB_InscrireShell_SeparateInstance->Visible) {
+        TRegistry* Reg = new TRegistry(KEY_WRITE);
+        try {
+            if (Reg->OpenKey(__T("Software\\MediaArea\\MediaInfo"), true)) {
+                if (CB_InscrireShell_SeparateInstance->Checked)
+                    Reg->WriteInteger("ShellExtension_SeparateInstance", 1);
+                else
+                    Reg->DeleteValue("ShellExtension_SeparateInstance");
+            }
+        } catch (...) {}
+        delete Reg;
+    }
 }
 
 //---------------------------------------------------------------------------
@@ -691,6 +703,25 @@ void __fastcall TPreferencesF::GUI_Configure()
     Tree->FullExpand();
     Page->ActivePage=Setup;
 
+    //Enable separate instance option if modern shell extension is installed
+    TRegistry* Reg = new TRegistry;
+    try {
+        Reg->RootKey = HKEY_CLASSES_ROOT;
+        if (Reg->OpenKeyReadOnly(__T("PackagedCom\\ClassIndex\\{20669675-B281-4C4F-94FB-CB6FD3995545}"))) {
+            CB_InscrireShell_SeparateInstance->Visible=true;
+            Reg->RootKey = HKEY_CURRENT_USER;
+            if (Reg->OpenKeyReadOnly(__T("Software\\MediaArea\\MediaInfo"))) {
+                if (Reg->ValueExists("ShellExtension_SeparateInstance"))
+                    CB_InscrireShell_SeparateInstance->Checked=Reg->ReadInteger("ShellExtension_SeparateInstance");
+            }
+        }
+    } catch (...) {}
+    delete Reg;
+
+    //Move InfoTip option up to prevent blank space if there is a space
+    if (!CB_InscrireShell_SeparateInstance->Visible)
+        CB_InfoTip->Top=CB_InscrireShell_Folder->Top+CB_InscrireShell_Folder->Height*0.9;
+
     //Translation
     //Title
     Caption=Prefs->Translate(__T("Preferences")).c_str();
diff --git a/Source/GUI/VCL/GUI_Preferences.dfm b/Source/GUI/VCL/GUI_Preferences.dfm
index 7312fc1bf..457ec29f9 100644
--- a/Source/GUI/VCL/GUI_Preferences.dfm
+++ b/Source/GUI/VCL/GUI_Preferences.dfm
@@ -145,7 +145,7 @@ object PreferencesF: TPreferencesF
       end
       object CB_InfoTip: TCheckBox
         Left = 2
-        Top = 104
+        Top = 120
         Width = 655
         Height = 18
         Caption = 
@@ -176,6 +176,16 @@ object PreferencesF: TPreferencesF
         TabOrder = 4
         OnClick = CB_InscrireShell_FolderClick
       end
+      object CB_InscrireShell_SeparateInstance: TCheckBox
+        Left = 18
+        Top = 104
+        Width = 639
+        Height = 17
+        Caption = 'Open each item in a separate instance'
+        TabOrder = 8
+        Visible = False
+        OnClick = CB_InscrireShell_FolderClick
+      end
     end
     object Setup_Advanced: TTabSheet
       Caption = 'Advanced'
diff --git a/Source/GUI/VCL/GUI_Preferences.h b/Source/GUI/VCL/GUI_Preferences.h
index a78cb2451..a8f1eb764 100644
--- a/Source/GUI/VCL/GUI_Preferences.h
+++ b/Source/GUI/VCL/GUI_Preferences.h
@@ -75,6 +75,7 @@ class TPreferencesF : public TForm
     TCheckBox *CB_InscrireShell;
     TCheckBox *CB_InscrireShell_Folder;
     TCheckBox *Advanced_LegacyStreamDisplay;
+    TCheckBox *CB_InscrireShell_SeparateInstance;
     void __fastcall General_Language_SelChange(TObject *Sender);
     void __fastcall General_Output_SelChange(TObject *Sender);
     void __fastcall Custom_EditClick(TObject *Sender);