PipeClientPure for MT4

DLL-free named-pipe inter-process communication (pure MQL4) · Free · MT4

About PipeClient for MT4

The PipeClient (and its counterpart PipeClientPure) library, documented and distributed at mtdownloads.com and on Forex Factory's long-running "Named Pipes for MT4" thread, provides DLL-free inter-process communication for MetaTrader 4 using Windows named pipes and pure MQL4 code.

In this client-server system, a PipeServer script creates a pipe instance and waits in a loop for a PipeClient to connect; the PipeClient then connects, writes a message to the pipe, reads back the server's reply, and terminates. This enables practical integrations — for example, sending live data from Excel into MetaTrader via the pipe, with incoming messages displayed directly on the MT4 chart. Because it's implemented entirely in MQL4 rather than a compiled Windows DLL, it avoids the security/permission concerns that come with enabling DLL imports.

Platform: MetaTrader 4
Type: DLL-free named-pipe inter-process communication library
Requires: Separate MT4 instances running PipeClient and PipeServer
Use case: External data feeds (e.g. Excel) into MT4 without DLL imports
Price: Free
Source: mtdownloads.com · PipeClientPure.mq4

Key Features

✓ DLL-free — avoids the extra security permissions a compiled DLL solution would require

✓ Enables genuinely useful external integrations (e.g. Excel-to-MT4 data feeds)

⚠ Requires running two separate MT4 instances (client + server) — a more involved setup than a single-EA solution

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