advancednsis

There are multiple ways to do something in NSIS, while one of them is most efficient and one works best.

To copy a file:

CopyFiles /SILENT "Path\to\file.txt" "Path\to\new\folder"

To move a file:

CopyFiles /SILENT "Path\to\file.txt" "Path\to\new\folder"
Delete "Path\to\file.txt"

(Use when moving between drives)

Rename "Path\to\file.txt" "Path\to\new\folder\file.txt"

(For quick moving)

To Remove a folder:

Delete "Folder\file.txt" 
Delete "Folder\file.txt" and so on...
RMDIR "Folder"

  or

RMDIR /r "Folder"

To back up registry settings (requires Registry.nsh and StrRep.nsh headers):

${registry::KeyExists} "HKEY_CURRENT_USER\Software\ExampleBackupByExamplePortable" $R0
		StrCmp $R0 "0" RestoreSettings
		${registry::KeyExists} "HKEY_CURRENT_USER\Software\Example" $R0
		StrCmp $R0 "-1" RestoreSettings
		${registry::MoveKey} "HKEY_CURRENT_USER\Software\Example" "HKEY_CURRENT_USER\Software\ExampleBackupByExamplePortable" $R0
		Sleep 100

To restore portable registry settings (requires Registry.nsh and StrRep.nsh headers):

RestoreSettings:
		IfFileExists "$SETTINGSDIRECTORY\Example.reg" "" LaunchNow

	;RestoreTheKey:
		IfFileExists "$WINDIR\system32\reg.exe" "" RestoreTheKey9x
			nsExec::ExecToStack `"$WINDIR\system32\reg.exe" import "$SETTINGSDIRECTORY\Example.reg"`
			Pop $R0
			StrCmp $R0 '0' LaunchNow ;successfully restored key
	RestoreTheKey9x:
		${registry::RestoreKey} "$SETTINGSDIRECTORY\Example.reg" $R0
		StrCmp $R0 '0' LaunchNow ;successfully restored key
		StrCpy $FAILEDTORESTOREKEY "true"

To save portable registry settings(requires Registry.nsh and StrRep.nsh headers):

;DoneRunning:
		StrCmp $FAILEDTORESTOREKEY "true" SetOriginalKeyBack
		${registry::SaveKey} "HKEY_CURRENT_USER\Software\Example" "$SETTINGSDIRECTORY\Example.reg" "" $0
		Sleep 100

To restore original registry settings (requires Registry.nsh and StrRep.nsh headers):

${registry::DeleteKey} "HKEY_CURRENT_USER\Software\Example" $R0
		Sleep 100
		${registry::KeyExists} "HKEY_CURRENT_USER\Software\ExampleBackupByExamplePortable" $R0
		StrCmp $R0 "-1" TheEnd
		${registry::MoveKey} "HKEY_CURRENT_USER\Software\ExampleBackupByExamplePortable" "HKEY_CURRENT_USER\Example" $R0
		Sleep 100

To display a splash screen (Requires newadvsplash.dll plugin and StrRep.nsh header):

StrCmp $DISABLESPLASHSCREEN "true" GetPassedParameters
			;=== Show the splash screen before processing the files
			InitPluginsDir
			File /oname=$PLUGINSDIR\splash.jpg "${NAME}.jpg"	
			newadvsplash::show /NOUNLOAD 1500 200 0 -1 /L $PLUGINSDIR\splash.jpg

FIXME