![](https://mql-programing.com/main29/wp-content/uploads/2022/05/chart_variable-320x180.jpg)
MQL
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/chart_variable-320x180.jpg)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/system_variable-320x180.jpg)
【MQL4変数】システム変数(_○○)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/error_code_constant-320x180.jpg)
【MQL4定数】エラーコード定数(ERR_○○)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/ENUM_POINTER_TYPE-320x180.jpg)
【MQL4定数】オブジェクトのポインタ定数(ENUM_POINTER_TYPE)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/ENUM_FILE_POSITION-320x180.jpg)
【MQL4定数】ファイルのシーク位置定数(ENUM_FILE_POSITION)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/ENUM_FILE_PROPERTY_INTEGER-320x180.jpg)
【MQL4定数】ファイル情報取得定数:Integer型(ENUM_FILE_PROPERTY_INTEGER)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/file_constant-320x180.jpg)
【MQL4定数】ファイル定数(FILE_○○)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/ENUM_CRYPT_METHOD-320x180.jpg)
【MQL4定数】暗号化定数(ENUM_CRYPT_METHOD)
![](https://mql-programing.com/main29/wp-content/uploads/2022/05/other_constant-320x180.jpg)