_ExcelOpen() cause COM error

[maniootek 4]

When I run this code I got COM error.

#include <Excel.au3>

Local $oErrorHandler = ObjEvent("AutoIt.Error", "_ErrFunc")

Local $oExcel = _Excel_Open()

Func _ErrFunc($oError)
    local $message
    $message &= "COM Error!" & @CRLF & @CRLF
    $message &= "scriptname: " & @ScriptName & @CRLF & @CRLF
    $message &= "number: " & $oError.number & @CRLF
    $message &= "windescription: " & $oError.windescription & @CRLF
    $message &= "source: " & $oError.source & @CRLF
    $message &= "description: " & $oError.description & @CRLF
    $message &= "helpfile: " & $oError.helpfile & @CRLF
    $message &= "helpcontext: " & $oError.helpcontext & @CRLF
    $message &= "lastdllerror: " & $oError.lastdllerror & @CRLF
    $message &= "scriptline: " & $oError.scriptline & @CRLF
    MsgBox(16, @ScriptName, $message)
EndFunc

Any idea what is wrong?

[Jos 1,493]

Care to share what that error is or do you want us to guess?

Jos

Edited August 27, 2017 by Jos

[water 1,910]

Works as designed!
_Excel_Open tries to connect to an already running instance of Excel. If there is none you get a COM error. This error is handled by _Excel_Open, which means that the function then starts a new instance of Excel.

Added: if you run the latest version of AutoIt then there is no need for a COM error handler in the main script as each UDF function calls its own COM error handler.

Edited August 27, 2017 by water
Description how the latest version of AutoIt handles COM errors.

[maniootek 4]

10 hours ago, Jos said:

Care to share what that error is or do you want us to guess?

Jos

sorry for that, COM error just show "scriptline 65" error, nothing more

 

10 hours ago, water said:

Works as designed!
_Excel_Open tries to connect to an already running instance of Excel. If there is none you get a COM error. This error is handled by _Excel_Open, which means that the function then starts a new instance of Excel.

Added: if you run the latest version of AutoIt then there is no need for a COM error handler in the main script as each UDF function calls its own COM error handler.

thank you for information. Now I used this code:

_Excel_Open(default, default, default, default, True)

and there is no more com error

Edited August 28, 2017 by maniootek

[maniootek 4]

 

On 27.08.2017 at 10:07 PM, water said:

Added: if you run the latest version of AutoIt then there is no need for a COM error handler in the main script as each UDF function calls its own COM error handler.

Can you give me more information about this?

[Danyfirex 518]

8 minutes ago, maniootek said:

 

Can you give me more information about this?

Check this function  __Excel_COMErrFunc inside Excel UDF also read about ObjEvent. 

Saludos