Centering chart on the Y axis

March 22nd, 2012, 05:59 PM

sniffy

this works for me

#region Event Handlers
private void centrePrice_Click(object sender, EventArgs e)
{
this.ChartControl.YAxisRangeTypeRight = YAxisRangeType.Fixed;
double yAxisSize = this.ChartControl.FixedPanelMaxRight -
this.ChartControl.FixedPanelMinRight;
this.ChartControl.FixedPanelMaxRight = Close[0] + (yAxisSize / 2);
this.ChartControl.FixedPanelMinRight = Close[0] - (yAxisSize / 2);

// force repaint so we dont have to wait for another event
ChartControl.ChartPanel.Invalidate(); // <<<<<<--------------------

}
#endregion Event Handlers

@sniffy

Please bear with me... I am self taught in writing code for Ninja Trader.... and my teacher isn't very good...

I'm trying to understand the code. Is this the entire thing or just a snippet?

Thanks....

March 23rd, 2012, 02:58 AM

Adamus posted pretty much the entire thing above.

He is adding toggleTrade and centrePrice buttons to the ChartTrader panel.

His centreprice event handler will be fired when he clicks his centreprice button.

After the image coordinates are reset he needs to ensure that the image is repainted.

Moving the mouse off the region and back again has the effect of forcing a repaint, so that is
why he sees the behaviour that he sees,

To avoid dependence on other random repaint events he simply needs to force a repaint to happen by
using the Control. Invalidate() method.

This forces the repaint so that he can see the effect of his coordinates change.

So simply add ChartControl.ChartPanel.Invalidate(); to the event handler after changing the coordinates.

There is plenty of discussion about using .Invalidate method on the various forums, MSDN etc.

hope this helps

April 11th, 2012, 10:41 AM

Here's the zip:

Download: PermaCode Chart Trader - extras for the NT7 Chart Trader

I wrote some simple stuff to add extra functionality to use the spare space in the Chart Trader column in NT7. displays average bid/ask spread displays current time displays remaining time before current bar closes on chart displays number …

Adamus

Centering chart on the Y axis

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Centering chart on the Y axis