System Integration

⚠*WARNING: system integration requires Administrator privileges. after run Notepad2.exe or metapath.exe as Administrator: For Notepad2, click menu "Settngs" -> "Advanced Settings" or "System Integration...". For metapath, open "Options", then click "Locations" (the last tab).

System integration is based on the article Notepad2 ― Replacing Windows Notepad by Florian, following are what each option performances.

Add Notepad2 or metapath to Windows Explorer's Context Menu

For Notepad2, when checked, following registries are added:

HKEY_CLASSES_ROOT\*\shell\Notepad2
	(Default)				REG_SZ		Edit with Notepad2
	icon					REG_SZ		Notepad2.exe
	command
		(Default)			REG_SZ		"Notepad2.exe" "%1"

for metapath, when checked, following registries are added:

HKEY_CLASSES_ROOT\Folder\shell\metapath
	(Default)				REG_SZ		Open in metapath
	icon					REG_SZ		metapath.exe
	command
		(Default)			REG_SZ		"metapath.exe" "%1"

where Edit with Notepad2 or Open in metapath is the "Context menu text" field on System Integration dialog; Notepad2.exe or metapath.exe is the full path to Notepad2.exe or metapath.exe.

💡Note 1: official Notepad2 and Notepad2-mod adds registries to HKEY_CLASSES_ROOT\*\shell\Notepad2.exe, which has .exe suffix.

💡Note 2: On Windows XP, app may fails to remove this integration when this option is unchecked, in this case, please run regedit.exe, manually delete HKEY_CLASSES_ROOT\*\shell\Notepad2 or HKEY_CLASSES_ROOT\Folder\shell\metapath.

Enable Taskbar Jump List

For Notepad2, when checked, following registries are added:

HKEY_CLASSES_ROOT\Applications\Notepad2.exe
	AppUserModelID			REG_SZ		Notepad2 Text Editor
	FriendlyAppName			REG_SZ		Notepad2 Text Editor
	shell\open\command
		(Default)			REG_SZ		"Notepad2.exe" "%1"

for metapath, when checked, following registries are added:

HKEY_CLASSES_ROOT\Applications\metapath.exe
	AppUserModelID			REG_SZ		metapath File Browser
	FriendlyAppName			REG_SZ		metapath File Browser
	shell\open\command
		(Default)			REG_SZ		"metapath.exe" "%1"

where AppUserModelID is the ShellAppUserModelID preference (in Settings2), see https://docs.microsoft.com/en-us/windows/win32/shell/appids for the usage. FriendlyAppName is the localized "Application Name" field on System Integration dialog.

💡Note 1: Taskbar Jump List for metapath currently not work, but this option can be used to change app name for metapath's taskbar icon.

💡Note 2: On Windows XP, app may fails to remove this integration when this option is unchecked, in this case, please run regedit.exe, manually delete HKEY_CLASSES_ROOT\Applications\Notepad2.exe or HKEY_CLASSES_ROOT\Applications\metapath.exe.

Replace Windows Notepad via registry

For Notepad2 only, when checked, following registries are added:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe
	Debugger				REG_SZ		"Notepad2.exe" /z