is there a way to respond to changes in conditional formatting in excel?
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I have an excel sheet that has dde links to real time market data. I use a timer to watch the dde prices every second. Then submit orders when certain conditions are met. I tried an infinite loop with DoEvent in the middle which works for 5 seconds then freezes the workbook.

Is there a way to respond to changes in dde updates? Change event doesn't detect them. It just detects when user makes manual change. 

I was told that if I have conditional formatting there's a way to pick up that event. So I can create a cell formula to turn true when my condition is met and then conditional format that cell to some formatting when it's true and then pick up the format change event. Is that possible? If so how. Any suggestions would be appreciated. 