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Hello,

I am working on the latest SP of your client/server ChartFX Control under

VB6 SP5.

I am adding a vast number of candlesticks to a chart by looping through my

data and adding each point with your API. This works fine. Also, I am

opening the data with the api ( ChartFX.OpenDataEx COD_VALUES, COD_UNCHANGE,

COD_UNCHANGE ) and modify the last candle's data every few seconds to

reflect the most up to date data. However, even if I close the opendataex

with a COD_SMOOTH tag, I am still seeing (on a 500mhz AMD test platform) all

the candles redraw, not just the last one. Is there a better way to

accomplish this?

Also, every minute or so the last candle does not update, but rather a new

candle is added. I am using (ChartFX.OpenDataEx COD_VALUES, COD_UNCHANGE,

COD_UNKNOWN) the api to accomplish this, and see everything redrawn here as

well.

I have set "chartfx.scrollable = false" so the user is forced to see all the

data at once; however, if he is using the zoom tool on part of the chart, he

will be unzoomed when I fire the first mentioned update event (when the last

candle is modified)... Is there a way to prevent him from being zoomed out?

Finally, please bare in mind that I am also using the financial extension,

so any fix must be compatible with it.

Thanking you in advance,

Chase Gale

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Check all properties that you are assigning every time the timer is fired,

COD_SMOOTH will only work if all you do is set the Value properties

(ValueEx, XValueEx,IniValueEx) any other property will cause a full refresh.

There is a flag in the TypeEx property called CTE_SMOOTH, this flag will

cause a biblitz operation EVERY time the chart is redrawn regardless of the

operation that caused the redraw.

As for a value being added, make sure that the indexes of the ValueEx

property contain the right values, even if you use COD_UNCHANGE, if you set

a value outside of the current range the chart's data will automatically

grow.

--

FP

Software FX, Inc.

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I'll work on that... thank you. Also, Did you discover anything about

zooming? If the user is zoomed in on a particular part of the chart and I

update any point, the chart unzooms... Is there a way to prevent this

behavior?

Thanks,

Chase Gale

"SoftwareFX Support" <support@softwarefx.com> wrote in message

news:fej2C97xCHA.2184@webserver1.softwarefx.com...

> Check all properties that you are assigning every time the timer is fired,

> COD_SMOOTH will only work if all you do is set the Value properties

> (ValueEx, XValueEx,IniValueEx) any other property will cause a full

refresh.

>

> There is a flag in the TypeEx property called CTE_SMOOTH, this flag will

> cause a biblitz operation EVERY time the chart is redrawn regardless of

the

> operation that caused the redraw.

>

> As for a value being added, make sure that the indexes of the ValueEx

> property contain the right values, even if you use COD_UNCHANGE, if you

set

> a value outside of the current range the chart's data will automatically

> grow.

>

> --

> FP

> Software FX, Inc.

>

>

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I tried this and didn't not get the behavior you are describing. On a

default chart, I added a button to the same form with the following code

(Click):

ChartFX1.OpenDataEx COD_VALUES, COD_UNCHANGE, COD_UNCHANGE

ChartFX1.ValueEx(0, 0) = Rnd(100)

ChartFX1.CloseData COD_VALUES

I zoom in, then press the button and the Zoom position and size remains

unchanged.

Can you give us a little bit more details on how to reproduce this case.

--

FP

Software FX, Inc.

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I'm using candlestick gallery with the chartfx Financial extension. I

believe ChartFXFE is doing something that you can replicate with ChartFX

client/Server alone.

Chase Gale

"SoftwareFX Support" <support@softwarefx.com> wrote in message

news:1fAIsO9yCHA.2184@webserver1.softwarefx.com...

> I tried this and didn't not get the behavior you are describing. On a

> default chart, I added a button to the same form with the following code

> (Click):

>

> ChartFX1.OpenDataEx COD_VALUES, COD_UNCHANGE, COD_UNCHANGE

> ChartFX1.ValueEx(0, 0) = Rnd(100)

> ChartFX1.CloseData COD_VALUES

>

> I zoom in, then press the button and the Zoom position and size remains

> unchanged.

>

> Can you give us a little bit more details on how to reproduce this case.

>

> --

> FP

> Software FX, Inc.

>

>

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