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Hints and Recipes for VB6

20 bytes removed, 20:24, 12 February 2008
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== Write/Create a new file using FileSystemObject ==*must add 'reference' to "Microsoft Scripting Runtime"  Dim fso As New FileSystemObject, fsoStream As TextStream  Dim rec1, strLine, strFileSpec  Dim cnt0 As Integer, tag1 As Integer  strFileSpec = Environ("HOMEPATH") & "\My Documents\kaching.log"  strLine = "kaching incident " & Date & " " & Format(time, "HH:mm:ss") & vbCrLf  Set fsoStream = fso.CreateTextFile(strFileSpec, True)  fsoStream.Write strLine  fsoStream.Close  Set fsoStream = Nothing: Set fso = Nothing== Write if exists, create if doesn't exist using FileSystemObject ==  If fso.FileExists(strFileSpec) Then    Set fsoStream = fso.OpenTextFile(strFileSpec, 2)  Else    Set fsoStream = fso.CreateTextFile(strFileSpec, True)  End If    fsoStream.Write strLine  fsoStream.Close  Set fsoStream = Nothing: Set fso = Nothing  ' strFileSpec, 1 : ForReading 2 : ForWriting  8 : ForAppending  == Write to control on another form and display ==  Dim lblCaught As Label  Set lblCaught = frmKaching.lblCaught  frmKaching.WindowState = vbNormal  lblCaught = "You've Been Naughty!"  frmKaching.Show== Quickly determine which option button is selected == Often OptionButton controls are arranged in control arrays. To quickly find the index of the only selected OptionButton control apply this little math trick.  The following example assumes there are 3 option buttons in a control array. intSelected = Option(0).Value * 0 - Option(1).Value * 1 - Option(2).Value * 2Note that the first operand is always zero, and you can simplify the above expression as follows: intSelected = -Option(1).Value - Option(2).Value * 2Credit to [http://msdnx.com/visual-basic-archive/23/43-36-236214.shtm Ed Lampman for this VB trick].== Command Line Parameter ==This example was taking from the Sales Logix Assistant Program: Private Function CheckLauncherParamter() ' blnDebug  If InStr(LCase(Command), "/verified") > 0 Then    CheckLauncherParamter = True    blnDebug = False    mnuFileExit.Enabled = False  ElseIf InStr(LCase(Command), "/debug") > 0 Then    CheckLauncherParamter = True    blnDebug = True    mnuFileExit.Enabled = True  Else    CheckLauncherParamter = False  End If End Function 
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