ErrorInfo (Function)

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Equivalence
HFSQL error
DDE errors

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ErrorInfo (Function)

In french: ErreurInfo

Retrieves information about the last error that occurred in a function of a WINDEV, WINDEV Mobile or WEBDEV component.

Caution: ErrorInfo must be used immediately after the call to the function that failed. Indeed, calling a WLanguage function may re-initialize and modify the status report of ErrorInfo.

Versions 16 and later

This function is now available for Windows Phone applications.

New in version 16

This function is now available for Windows Phone applications.

Versions 18 and later

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Example

// Open the overview file
nFileID is int = fOpen(FileName, foRead)
// Check the file opening
IF nFileID = -1 THEN
Error("Unable to open the file: " + FileName, ErrorInfo())
RESULT False
END

// Error found?
IF ErrorOccurred = True THEN
// Full message of the main error
Trace(ErrorInfo())
// Browse the sub-errors (if any)
FOR i = 1 _TO_ ErrorInfo(errNumberSubError)
// Full message of each sub-error
Trace("Sub-error " + i + ": " + ErrorInfo(errMessage, i))
END
END

Syntax

Getting information about the last error Hide the details

<Result> = ErrorInfo([<Type of information>])

<Result>: Character string or integer

Requested information.
Empty string ("") if no error occurred or if the requested information is not available.

<Type of information>: Optional constant

Information to return.
errCode Error code
This constant is ignored.
errSystemCode Number of the system error (if it exists)
This constant is ignored.
errFullDetails Full error details (error line, current process, etc.).
Remark: Returns the same information as the one retrieved when clicking the "Copy" button in the error window of WLanguage.
errDateTime Date and time of error
This constant is ignored.
errElement Name of object associated with the current process when the error occurred.
This constant is ignored.
errFIC Full name of data file (FIC) associated with the error.
This constant is ignored.
errFile Logical name of file associated with the error.
This constant is ignored.
errInfo Additional information.
This constant is ignored.
errDebugInfo Specific information for debugging the problem that occurred. This information should only be displayed and communicated on express demand from PC SOFT.
When running a query via OLE DB, this option allows you to retrieve the code of the SQL query currently run on the database.

This constant is ignored.
errLink Name of link associated with the error.
This constant is ignored.
errLine Number of the error line.
This constant is ignored.
errMessage
(default value) Full error message.
errSystemMessage Message of system error (if it exists).
errMMO Full name of memo file (.MMO) associated with the error.
This constant is ignored.
errNDX Full name of index file (.NDX) associated with the error.
This constant is ignored.
errNumberSubError Number of sub-errors for the error
This constant is ignored.
errFullComponentName Full name of component currently run.
Some examples:
"" (empty string): main application context.
"Component1": "Component1" component directly used in the project.
"Component1.Component2": "Component2" component used from "Component1".
This constant is ignored.
errRecNum Number of the record associated with the error.
This constant is ignored.
errDuring Name of the WLanguage function that threw the error.
errStack Stack of WLanguage calls
errSummary Summary of error
errItem Name of item associated with the error.
This constant is ignored.
errProcess Name of process in progress when the error occurred.
This constant is ignored.
errWDD Full name of WDD associated with the error.
This constant is ignored.

Getting information about the sub-errors of the last error Hide the details

<Result> = ErrorInfo(<Type of information> , <Sub-error subscript>)

<Result>: Character string or integer

Requested information.
Empty string ("") if no sub-error occurred or if the requested information is not available.

<Type of information>: Constant

Information to return.
errCode Code of the sub-error.
errSystemCode Number of the system sub-error (if it exists).
errFullDetails Full details of sub-error (sub-error line, current process, etc.).

Remark: Returns the same information as the one retrieved when clicking the "Copy" button in the error window of WLanguage.
errDateTime Date and time of sub-error.
errElement Name of object associated with the process in progress when the sub-error occurred.
errFIC Full name of data file (.FIC) associated with the sub-error.
errFile Logical name of file associated with the sub-error.
errInfo Additional information.
errDebugInfo Specific information for debugging the problem that occurred. This information should only be displayed and communicated on express demand from PC SOFT.

When running a query via OLE DB, this option allows you to retrieve the code of the SQL query currently run on the database.
errLink Name of link associated with the sub-error.
errLine Number of the sub-error line.
errMessage
(default value) Full message of sub-error.
errSystemMessage Message of system error (if it exists).
errMMO Full name of memo file (.MMO) associated with the sub-error.
errNDX Full name of index file (.NDX) associated with the sub-error.
errRecNum Number of record associated with the sub-error.
errDuring Name of WLanguage function that threw the sub-error.

errStack Stack of WLanguage calls.
errSummary Summary of sub-error.
errItem Name of item associated with the sub-error.
errProcess Name of process in progress when the sub-error occurred.
errWDD Full name of WDD associated with the sub-error.

<Sub-error subscript>: Integer

Subscript of sub-error to use.
Reminder: The number of sub-errors for an error is returned by the errNumberSubError constant.

Remarks

Equivalence

Using the Error function without any parameters allows you to directly display the error message corresponding to the last WLanguage function that triggered an error.

In this case, the following code:

Error()

is equivalent to:

Error(ErrorInfo())

HFSQL error

When a HFSQL error occurs, ErrorInfo is equivalent to HErrorInfo. Remark: From version 19, HFSQL is the new name of HyperFileSQL.

DDE errors

See DDE error codes to find out the main DDE error codes.

Component : wd250vm.dll