Creates and shows a message box and manages it. A message box contains a message and header, any combination of predefined signs and command buttons.

Parameters

text Text, containing message to output.

caption Optional text to be displayed in the box header. If the parameter is empty, Expert Advisor name is shown in the box header.

flags

Optional flags defining appearance and behavior of a message box. Flags can be a combination of a special group of flags:

MB_OK	Message window contains only one button: OK. Default
MB_OKCANCEL	Message window contains two buttons: OK and Cancel
MB_ABORTRETRYIGNORE	Message window contains three buttons: Abort, Retry and Ignore
MB_YESNOCANCEL	Message window contains three buttons: Yes, No and Cancel
MB_YESNO	Message window contains two buttons: Yes and No
MB_RETRYCANCEL	Message window contains two buttons: Retry and Cancel
MB_CANCELTRYCONTINUE	Message window contains three buttons: Cancel, Try Again, Continue

Returns

If the function is successfully performed, the returned value is one of values of MessageBox() return codes:

IDOK	"OK" button has been pressed
IDCANCEL	"Cancel" button has been pressed
IDABORT	"Abort" button has been pressed
IDRETRY	"Retry" button has been pressed
IDIGNORE	"Ignore" button has been pressed
IDYES	"Yes" button has been pressed
IDNO	"No" button has been pressed
IDTRYAGAIN	"Try Again" button has been pressed
IDCONTINUE	"Continue" button has been pressed

Note: The function can't be called from custom indicators, because indicators are executed in the interface thread and shouldn't slow it down.