VBA Excel Multiple/Simultaneous Event Handling

Experts Exchange

	[x] Posted via EE Mobile
	Search, ask, and monitor your questions on the go with EE Mobile. Visit Experts Exchange from your mobile device and never be out of touch again.

Question

	[x] Attachment Details

[x]

The Solution Rating System

With so many solutions, how can you tell which solutions are most likely to help you and which ones are not? To provide you with a tool to use, we rate our solutions based on various elements that most accurately determine if a solution is a quality solution. To explain what factors affect the solution rating, here are the elements we take into consideration when formulating our solution rating.

The Grade of the Solution
The Zone Rank of the Expert Providing the Solution
The Number of Author and Expert Comments
The Number of Experts Contributing
The Feedback of the Community

Your Input Matters
Because of the way the system is set up, the most important variable in this equation is you. As a member of Experts Exchange, you are able to cast your vote on the quality of the solutions in regard to how complete, accurate, helpful and easy to understand each solution is. When you provide your feedback, each rating is adjusted accordingly. So, if you see a solution that has a poor rating that you think is a good solution, let us know by rating it. As you do, the rating will be adjusted and will become more accurate for other members of our site.

If you have any suggestions that you would like to make for our rating system, please ask a question in the Suggestions Zone of Community Support.

Thank you!

10.0

VBA Excel Multiple/Simultaneous Event Handling

Asked by osknows in VB Objects, Visual Basic Programming, Microsoft Excel Spreadsheet Software

I need some advice on how best to code event handling using VBA within MS Excel.

I have 1 workbook, with say 20 worksheets. Each worksheet is linked to a 3rd party app where the 3rd party app writes data to each worksheet between every 0.1 to 1 seconds which changes periodically, therefore, updates of each worksheet are not in any particular order or set timeframe. I need to run some code to perform calcs on this data and write back into the same worksheet after each update.

This is relatively easy with 1 worksheet as I could use a 'worksheet_change' event, however, with mutliple worksheets and events I'm unsure how to proceed.

I could use a 'Workbook_SheetChange(ByVal Sh As Object, ByVal Target As Range)' event but have a few questions

1. How do I capture a new event but allow current code to complete (eg Application.Enableevents = False will miss any events that trigger until set to true again)
2. What happens if code takes longer to run than the period between event triggers? Eg do the events stack and run in order or will they get missed?
3. Is there a way to run simultaneous events to avoid slowdown or stacking?

Any advice on this is greatly appreciated

Thanks,
Os

View the Solution FREE for 30 Days

20091021-EE-VQP-81 - Hierarchy / EE_QW_3_20080625

Hall of Fame

1. rorya78,894
2. Idle_Mind54,228
3. RobSamp...39,500
4. matthews...35,435
5. abel34,750
6. chris_bot...32,700
7. saurabh72630,370
8. danaseaman27,832
9. webtubbs26,140
10. GrahamSkan25,700
11. brettdj24,950
12. BlueDevilF...23,075
13. jpaulino22,100
14. CodeCruiser20,496
15. robberbaron19,710
16. sirbounty17,800
17. emoreau16,300
18. angelIII15,592
19. EDDYKT14,600
20. Krys_K14,500
21. Dhaest13,850
22. TheLearn...13,000
22. Shift-313,000
24. jaime_oliv...12,864
25. capricorn112,800

1. Idle_Mind129,678
2. rorya118,974
3. RobSamp...116,450
4. danaseaman84,557
5. GrahamSkan83,150
6. angelIII60,279
7. jpaulino51,250
8. matthews...47,635
9. saurabh72644,530
10. PaulHews43,519
11. sirbounty42,661
12. Dhaest41,720
13. chris_bot...40,550
14. emoreau40,108
15. webtubbs39,985
16. BlueDevilF...38,295
17. EDDYKT35,702
18. abel34,950
19. robberbaron34,675
20. zorvek33,570
21. brettdj29,850
22. AzraSound27,908
23. robinu26,832
24. Arthur_...24,560
25. shasunder24,400

VBA Excel Multiple/Simultaneous Event Handling

Asked by osknows in VB Objects, Visual Basic Programming, Microsoft Excel Spreadsheet Software

About this solution