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MQL5 ReferenceStandard LibraryPanels and DialogsCAppDialogCreateExpert 

CreateExpert

Initialization method for working in Expert Advisors.

bool  CreateExpert(
   const int     x1,         // coordinate
   const int     y1,         // coordinate
   const int     x2,         // coordinate
   const int     y2          // coordinate
   )

Parameters

x1

[in]  X coordinate of the upper left corner.

y1

[in]  Y coordinate of the upper left corner.

x2

[in]  X coordinate of the lower right corner.

y2

[in]  Y coordinate of the lower right corner.

Return Value

true - successful, otherwise - false.