when writing new value to chart, don't change scroll position

[John_Speckhard]

I have a program that writes a new value to a chart every minute.  (The x axis is time).  I show the last weeks worth of data on the chart,  but I also have the x-axis scroll bar visible so users can scroll back to view previous weeks.  The problem is that if they've scrolled back a few weeks and the one-minute chart update happens, the chart jumps to the current time (shows the latest week.)  Is there a way to have the chart simply stay put when even when a new value is written to it?

[DBerry · Accepted solution]

John,

I believe you can use the "Defer Panel Updates" property to accomplish this.  Set the property TRUE on a user mouse enter event for the chart to prevent the updating of the chart while the user moves the scroll.  Set it back to FALSE on a mouse leave.I tried the same with a mouse down/mouse up event but it didn't seem to behave as expected.  You canplay around with different events to see what works best but this basic technique should work.  Have a look at the attached screenshot for details.

Dan

[John_Speckhard]

Thats just what I needed!  Thanks so much