Check to see if Excel has closed
 

I am building a VB6 application that uses Automation to populate an Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I attempt to
close it in code?

Bob

Check to see if Excel has closed
 

Bob,
Something similar to the following (used to check for Word"),
should work for you...
'------------------------
Public appWord As Word.Application

Sub CreateWord()
Set appWord = New Word.Application
appWord.Visible = True
End Sub

'User could close application here

Sub CheckForWord()
If TypeName(appWord) = "Application" Then
appWord.Quit
Set appWord = Nothing
Else
'do something else
End If
End Sub
'------------------------
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message ...
I am building a VB6 application that uses Automation to populate an Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I attempt to
close it in code?
Bob

Check to see if Excel has closed
 

Jim:

When I try that, it doesn't seem to work. The "TypeName" function still
returns the object type of "Application", even if the user has closed the
Excel Session.

Bob

"Jim Cone" wrote in message
...
Bob,
Something similar to the following (used to check for Word"),
should work for you...
'------------------------
Public appWord As Word.Application

Sub CreateWord()
Set appWord = New Word.Application
appWord.Visible = True
End Sub

'User could close application here

Sub CheckForWord()
If TypeName(appWord) = "Application" Then
appWord.Quit
Set appWord = Nothing
Else
'do something else
End If
End Sub
'------------------------
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
I am building a VB6 application that uses Automation to populate an
Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I attempt
to
close it in code?
Bob

Check to see if Excel has closed
 

Don't know if this is any help, but try to look on help in excel or vb6.0 on
"GetObject".

Grtz,
James

"Robert A. Boudra" schreef in bericht
...
Jim:

When I try that, it doesn't seem to work. The "TypeName" function still
returns the object type of "Application", even if the user has closed the
Excel Session.

Bob

"Jim Cone" wrote in message
...
Bob,
Something similar to the following (used to check for Word"),
should work for you...
'------------------------
Public appWord As Word.Application

Sub CreateWord()
Set appWord = New Word.Application
appWord.Visible = True
End Sub

'User could close application here

Sub CheckForWord()
If TypeName(appWord) = "Application" Then
appWord.Quit
Set appWord = Nothing
Else
'do something else
End If
End Sub
'------------------------
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
I am building a VB6 application that uses Automation to populate an
Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I attempt
to
close it in code?
Bob

Check to see if Excel has closed
 

Bob,
Is there a hidden instance of Excel still running?
Check in Windows Task Manager.
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message ...
Jim:
When I try that, it doesn't seem to work. The "TypeName" function still
returns the object type of "Application", even if the user has closed the
Excel Session.
Bob

"Jim Cone" wrote in message
...
Bob,
Something similar to the following (used to check for Word"),
should work for you...
'------------------------
Public appWord As Word.Application

Sub CreateWord()
Set appWord = New Word.Application
appWord.Visible = True
End Sub

'User could close application here

Sub CheckForWord()
If TypeName(appWord) = "Application" Then
appWord.Quit
Set appWord = Nothing
Else
'do something else
End If
End Sub
'------------------------
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
I am building a VB6 application that uses Automation to populate an
Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I attempt
to close it in code?
Bob

Check to see if Excel has closed
 

Hi Bob,
You should use createobject & getobject to start with. That way you have a
"pointer" to work with.
(with the proper error checking)
This code example is in your VB6 help file also.
http://msdn.microsoft.com/library/de...getobjectx.asp

The on real "problem" with getobject is it will find any running Excel
session.
The work-around is to specify the full path.
Note this line in the code: "Set MyXL = Getobject("c:\vb4\MYTEST.XLS")



--

John
johnf202 at hotmail dot com


"Robert A. Boudra" wrote in message
...
Jim:

When I try that, it doesn't seem to work. The "TypeName" function still
returns the object type of "Application", even if the user has closed the
Excel Session.

Bob

"Jim Cone" wrote in message
...
Bob,
Something similar to the following (used to check for Word"),
should work for you...
'------------------------
Public appWord As Word.Application

Sub CreateWord()
Set appWord = New Word.Application
appWord.Visible = True
End Sub

'User could close application here

Sub CheckForWord()
If TypeName(appWord) = "Application" Then
appWord.Quit
Set appWord = Nothing
Else
'do something else
End If
End Sub
'------------------------
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
I am building a VB6 application that uses Automation to populate an
Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I attempt
to
close it in code?
Bob

Check to see if Excel has closed
 

Hi Jim:

Yes, there continues to be an existing instance of Excel running even though
the user has closed the window. It only goes away when the object variable
loses scope or is explicitly set to Nothing. This doesn't really do me any
good, because the reason I'm trying to find out if it's still open is so I
can allow the user to save the active worksheet, if it's stll present. If I
set the object variable to Nothing, then I can't offer that option anyway.

Bob

"Jim Cone" wrote in message
...
Bob,
Is there a hidden instance of Excel still running?
Check in Windows Task Manager.
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
Jim:
When I try that, it doesn't seem to work. The "TypeName" function still
returns the object type of "Application", even if the user has closed
the
Excel Session.
Bob

"Jim Cone" wrote in message
...
Bob,
Something similar to the following (used to check for Word"),
should work for you...
'------------------------
Public appWord As Word.Application

Sub CreateWord()
Set appWord = New Word.Application
appWord.Visible = True
End Sub

'User could close application here

Sub CheckForWord()
If TypeName(appWord) = "Application" Then
appWord.Quit
Set appWord = Nothing
Else
'do something else
End If
End Sub
'------------------------
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
I am building a VB6 application that uses Automation to populate an
Excel
worksheet with data from a database table. When cleaning up as the
application closes, is there any way to check to see if the user has
manually closed the Automation server (Excel session) before I
attempt
to close it in code?
Bob

Check to see if Excel has closed
 

Bob,

Code to automate Excel can very easily create "orphan" references
that prevent the application from quitting even though the application has
been "closed". I have taken the liberty of listing some causes
of the problem. Hope it helps...
'-------------------------------------------------------------
Here are some general guidelines to use when automating Excel...
'Jim Cone - San Francisco, CA

1. Set a reference to the primary Excel objects used in your program.
Dim xlApp As Excel.Application
Dim WB As Excel.Workbook
Dim WS As Excel.Worksheet

Set xlApp = New Excel.Application
Set WB = xlApp.Workbooks.Add
Set WS = WB.Sheets(1)

Use the appropriate reference Every Time you make reference to a spreadsheet.
Do not use Range(xx) - use WS.Range(xx)
Cells should be WS.Cells(10, 20) or _
WS.Range(WS.Cells(10, 20), WS.Cells(20, 40))

2. Avoid the use of ActiveSheet, ActiveWorkbook, Selection etc.
Use your object references.

3. Avoid the use of the "With" construct.

4. Set all objects to Nothing in the proper order - child then parent.
Set WS = Nothing
WB.Close SaveChanges:=True 'your choice
Set WB = Nothing
xlApp.Quit
Set xlApp = Nothing

Violating any of these guidelines can leave "orphans" that still refer
to Excel and prevent the application from closing.

'------------------------------------------------------------

Articles dealing with unqualified references and automation
application not quitting.

1. 178510 - PRB: Excel Automation Fails Second Time Code Runs
http://support.microsoft.com/default...en-us%3b178510
Summary: While running code that uses Automation to control Microsoft Excel,
one of the following errors may occur: With Microsoft Excel 97 and later, you receive the error:
Run-time error '1004': Method '<name of method' of object '_Global' failed -or-...

2. 189618 - PRB: Automation Error Calling Unqualified Method or Property
http://support.microsoft.com/default...en-us%3b189618
Summary: While running code that uses Automation to control Microsoft Word 97,
Word 2000, or Word 2002, you may receive one of the following error messages:
Run-time error '-2147023174' (800706ba) Automation error -or- Run-time error '462': The remote server...

3. 199219 - XL2000: Automation Doesn't Release Excel Object from Memory
http://support.microsoft.com/default...;en-us;q199219
When you run a macro that uses automation to create a Microsoft Excel object (instance),
the Excel object does not exit from memory when you specify.
If you create another Excel object after quitting the first, a second instance is in memory.
This problem occurs when your macro uses a "WITH" statement that refers to the automation object.

4. 319832 - INFO: Error or Unexpected Behavior with Office Automation
When You Use Early Binding in Visual Basic
http://support.microsoft.com/default...en-us%3b319832
Summary: When you automate a Microsoft Office application,
you may receive an error message or you may experience unexpected behavior, as follows.
You may receive one of the following error messages: Error 91: Object variable or With block variable not set....

5. 317109 - Visual Basic .Net & Visual C#
'-------------------------------------------------------------
Regards,
Jim Cone
San Francisco, CA


"Robert A. Boudra" wrote in message ...
Hi Jim:
Yes, there continues to be an existing instance of Excel running even though
the user has closed the window. It only goes away when the object variable
loses scope or is explicitly set to Nothing. This doesn't really do me any
good, because the reason I'm trying to find out if it's still open is so I
can allow the user to save the active worksheet, if it's stll present. If I
set the object variable to Nothing, then I can't offer that option anyway.
Bob

"Jim Cone" wrote in message
...
Bob,
Is there a hidden instance of Excel still running?
Check in Windows Task Manager.
Regards,
Jim Cone
San Francisco, CA

"Robert A. Boudra" wrote in message
...
Jim:
When I try that, it doesn't seem to work. The "TypeName" function still
returns the object type of "Application", even if the user has closed
the Excel Session.
Bob
-snip-