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mql5-skills/skills/mql5/references/docs/34-standardlibrary/3696-standardlibrary-expertclasses-samplemmclasses-cmoneysizeoptimized-cmoneysizeoptimizedcheckopenlong.md
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2026-06-23 21:47:51 +08:00
# CheckOpenLong
Gets trade volume for a long position.
```
virtual double  CheckOpenLong(
   double  price,     // price
   double  sl         // Stop Loss price
   )
```
Parameters
price
[in]  Estimated open price.
sl
[in]  Estimated Stop Loss price.
Return Value
Trade volume for long position.
Note
The function returns trade volume for a long position considering results of previous deals.