mIRC

Commands & Identifiers

• mSL Commands
• mSL Identifiers

Basics

• Introduction
• Variables
• String Manipulation
• Token Manipulation
• Aliases

Events

• On events
• Access levels
• Raw Events
• Ctcp Events

Matching Tools

• Wildcard
• Regex

Data Storage

• Variables
• File Handling
• Hash Tables
• Binary variables
• INI Files
• Text Files

Control Structures

• If Then Else
• Operators
• While Loops
• Goto Loops
• Groups

GUI Scripting

• Custom Windows
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• Dialogs
• Dialog Components

Sockets

• Sockets
• TCP Sockets
• UDP Sockets

Advanced Scripting

• Eval Brackets
• COM
• DLL
• SendMessage

Additional Resources

• mSL Commands
• mSL Identifiers
• mSL Local Identifiers
• mSL Events
• mSL Event Prefixes

Security

• mSL Injection
• DCC GET security

Other

• mIRC Installation
• Virtual profile
• Playing music
• Unicode
• IPv6
• Optimization
• Threads
• DCC Protocols
• Line Length Limit
• Font rendering

$null This identifier does not return a value, just like $true or $timeout, it's a value you can use in comparison in /if or /while for example, empty variable also returns $null

Synopsis

$null

Paramters

None

Properties

None

Example

//if ($? != $null) echo -a you entered $v1

Compatibility

Added: mIRC v2.1a
Added on: 28 Feb 1995
Note: Unless otherwise stated, this was the date of original functionality.
Further enhancements may have been made in later versions.

See Also

$false $true