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sandyd

Error Handling

4 posts in this topic

Hi all,

I'm looking for a way to trap an erro in the following code:

$WshNetwork = ObjCreate("WScript.Network")
 $PrinterPath = $Server & GUICtrlRead($cmbPrinters)

 ; Add network printer
 $WshNetwork.AddWindowsPrinterConnection($PrinterPath)

If the $cmbPrinters does not contain a valid printer, I need an error message to say so.

Any ideas?


----[ SandyD ]---

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#2 ·  Posted (edited)

Perhaps this untested use of WMI may validate the printers name?

Func _PrinterNameCheck($sPrinterName, $strComputer = ".")
    ; Function: Resolve Printer name
    Local $objPrinter
    Local $objWMIService = ObjGet("winmgmts:{impersonationLevel=impersonate}!\\" & $strComputer & "\root\cimv2")
    Local $colInstalledPrinters =  $objWMIService.ExecQuery ("Select * from Win32_Printer")
    ; Loop through collection
    For $objPrinter in $colInstalledPrinters
        If $sPrinterName = $objPrinter.Name Then
            Return True
        EndIf
    Next
EndFunc

:P

Edit:

Localized variables

Edited by MHz

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Also, see the example in ObjEvent for implementing a COM error handler. There is also a discussion of it in the general Obj/Com section of the helpfile.

Dale


Free Internet Tools: DebugBar, AutoIt IE Builder, HTTP UDF, MODIV2, IE Developer Toolbar, IEDocMon, Fiddler, HTML Validator, WGet, curl

MSDN docs: InternetExplorer Object, Document Object, Overviews and Tutorials, DHTML Objects, DHTML Events, WinHttpRequest, XmlHttpRequest, Cross-Frame Scripting, Office object model

Automate input type=file (Related)

Alternative to _IECreateEmbedded? better: _IECreatePseudoEmbedded  Better Better?

IE.au3 issues with Vista - Workarounds

SciTe Debug mode - it's magic: #AutoIt3Wrapper_run_debug_mode=Y Doesn't work needs to be ripped out of the troubleshooting lexicon. It means that what you tried did not produce the results you expected. It begs the questions 1) what did you try?, 2) what did you expect? and 3) what happened instead?

Reproducer: a small (the smallest?) piece of stand-alone code that demonstrates your trouble

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Cheers guys,

Found it


----[ SandyD ]---

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