WPF Zorder of a button

[fpa75]

Hello,
In a chart I add a large control and a button on top of the large control.
When using

ChartControl.Children.Add( btn1 );
System.Windows.Controls.Panel.SetZIndex( btn1, 10 );

the button is visible.
As UserControlCollection.Add is the recommended way to add controls to a chart, one should do

UserControlCollection.Add( btn1 );
System.Windows.Controls.Panel.SetZIndex( btn1, 10 );

But then the ZIndex seems not to be applied because the button remains hidden. So how can we set ZIndex when using UserControlCollection.Add ?
Thanks.

[NinjaTrader_Jesse]

Hello,

Thank you for the post.

I wanted to check, Could you provide a complete example of what you are trying to achieve?

I tried to use the full example we have in the help guide for UserControlCollection and removed the columns of the grid so the buttons are on top of each other. I can see that setting the ZOrder does effect the button and controls which are on top.

Have you tried the full example from the UserControlCollection page at this point or are you doing something that is logically different than the example?

I look forward to being of further assistance.

[fpa75]

Sorry, you could not understand the problem without knowing that 2 indicators are used. One add the button and another one add a large header at the top of the chart. I have solved the issue by using UserControlCollection in both indicators, which is obvious to do but I haven't though to do it. There is also some luck because the button appears on top of the header and I do not know why, but it's ok if it works.

You may be interested to know why I had this issue : it is in link with strategies. If ChartControl.Children.Add() is used to add a control in the chart (a button for example), the button will disappear when you add or remove a strategy in the chart. Is this normal behaviour or is it a bug ? Whereas if UserControlCollection is used then the button remains in the chart.

So UserControlCollection solve this problem. The remaining problem is when one add controls in the price scale (with System.Windows.Controls.Grid.SetColumn( myControl, 2 )). To add a WPF control in the price scale, UserControlCollections cannot be used. It seems unable to add a control in the 3rd column of the grid/chart. So one must use ChartControl.Children.Add.

This leads to something that is missing in NT 8 from what I have learnt at the moment: the ability to work in the price scale. I do not like the standard price marker and have developed my own. Doing so I have understood that NT has these limitations :
- because RenderTarget draws only in the chart it is not possible to use SharpDX in the price scale
- because UserControlCollections cannot reach the price scale column, one cannot use WPF controls

If I am wrong please correct me. If I am right I hope NT will address these limitations in a future update.

Thanks.