Assuming you have obtained a legitimate copy of Version 4.0.5 (full version, activated), here is a typical workflow:
.mq4 file in MetaEditor.Example of decompiled code fragment (before cleanup):
int var_1 = 0;
double var_2 = 1.234;
if(var_1 == 0)
var_2 = var_2 * 1.5;
After cleanup:
int signalCount = 0;
double lotSize = 1.234;
if(signalCount == 0)
lotSize = lotSize * 1.5;
Before hunting for Version 4.0.5, consider these legal and safer alternatives:
None of these are as convenient as Version 4.0.5, but they are legally defensible. Ex4 To Mq4 V4 Decompiler Version 4.0 5 Full Version
Real legal cases: MetaQuotes has banned forum users for promoting decompilation. A few commercial EA developers have successfully filed DMCA takedowns against websites hosting decompiled versions of their code. However, no major public lawsuit specifically over an MT4 decompiler has been concluded—largely because most violations occur anonymously online.
A genuine "Full Version 4.0.5" (keygen-activated or pre-cracked) supposedly includes: Assuming you have obtained a legitimate copy of Version 4
| Feature | Description |
|---------|-------------|
| 100% EX4 → MQ4 conversion | Rebuilds source code without losing logical blocks |
| Multi-file support | Decompiles entire folders of .ex4 files at once |
| Build recognition | Auto-detects MT4 build version (up to build 1353) |
| External DLL reference recovery | Restores #import directives and function mappings |
| Resource extraction | Recovers images, sounds, and embedded files |
| No trial expiration | "Full version" removes the 30-day or 100-line limit |
| Batch mode | Command-line interface for automated decompilation |
Note: The above are based on distributor claims. Independent tests show mixed results depending on compiler optimizations used. Click Decompile – Progress bar advances