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Visual Basic > API and Miscellaneous Code Examples

See if Crystal Reports is being viewed on screen or is done printing.

See if Crystal Reports is being viewed on screen or is done printing.

'This code will allow you to check if a  Crystal report
'is still being viewed on the screen or if the report is 
'done printing.

1. Put this code a module.
 
Declare Function GetActiveWindow Lib "User32" () As Long
Declare Function IsWindow Lib "User32" (ByVal hWnd As Long) As Long
Dim Destination as Integer

2.  Set the Destination var on a form
3.  Start to print the report.
      
      frmNAME.report1.Destination = Destination
    
      frmNAME.report1.Action = 1    ' Start your eng
      

     ' This is the code that we all have been waiting for.

      '**** destination **** 0 = Screen **** 1 = Printer *****************************
      Select Case Destination
      
      Case 0
        'Dim hWndCrystalWindow As Integer
        hWndCrystalWindow = GetActiveWindow()
        While (IsWindow(hWndCrystalWindow))
        DoEvents
        Wend    ' The wait is over
      Case 1
        'Dim status1
        While status1 = 0
        status1 = frmPrintInv!crwreport1.Status
        DoEvents
        Wend    'The wait is over
      
      End Select

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