Custom BarType - PropertyDescriptor

August 14th, 2010, 08:44 AM

hi folks,
I am trying to develop a custom bartype. now i want to place a datetimepicker in the property descriptor. can anybody throw some light on how to do the same as i am stuck on that part.

thanks in advance.

August 14th, 2010, 09:58 AM

Sorry, I don't know how to add a DateTime, but I think you will have to play with this routine:

Code

public override PropertyDescriptorCollection GetProperties(PropertyDescriptor propertyDescriptor, Period period, Attribute[] attributes)
{
	PropertyDescriptorCollection properties = base.GetProperties(propertyDescriptor, period, attributes);

	// here is how you remove properties not needed for that particular bars type
	properties.Remove(properties.Find("BasePeriodType", true));
	properties.Remove(properties.Find("BasePeriodValue", true));
	properties.Remove(properties.Find("PointAndFigurePriceType", true));
	properties.Remove(properties.Find("ReversalType", true));
	properties.Remove(properties.Find("Value2", true));

	// here is how you change the display name of the property on the properties grid
	Gui.Design.DisplayNameAttribute.SetDisplayName(properties, "Value", "\rBrick size");

	return properties;
}

This example shows how to remove and rename properties. To Add one, there is an Add method, but I am not sure on the syntax to create a PropertyDescriptor. Hope that helps.

August 14th, 2010, 11:37 AM

aslan

Sorry, I don't know how to add a DateTime, but I think you will have to play with this routine:

Code

public override PropertyDescriptorCollection GetProperties(PropertyDescriptor propertyDescriptor, Period period, Attribute[] attributes)
{
    PropertyDescriptorCollection properties = base.GetProperties(propertyDescriptor, period, attributes);

    // here is how you remove properties not needed for that particular bars type
    properties.Remove(properties.Find("BasePeriodType", true));
    properties.Remove(properties.Find("BasePeriodValue", true));
    properties.Remove(properties.Find("PointAndFigurePriceType", true));
    properties.Remove(properties.Find("ReversalType", true));
    properties.Remove(properties.Find("Value2", true));

    // here is how you change the display name of the property on the properties grid
    Gui.Design.DisplayNameAttribute.SetDisplayName(properties, "Value", "\rBrick size");

    return properties;
}

This example shows how to remove and rename properties. To Add one, there is an Add method, but I am not sure on the syntax to create a PropertyDescriptor. Hope that helps.

ya i fiddled with that part, but sadly i too couldnt figure out the exact syntax for the propertydescriptor.

August 14th, 2010, 11:45 AM

I think you are venturing into the grey area of unsupported in Ninja. They exposed the bar formation code, but don't really tell you how to go about it. Being able to add your own properties would really be helpful in BarTypes and ChartStyles. This is one of those cases, where posting the Ninja forum might help. Tell them what you are doing, and ask if they can give you a "hint" on how to add a property of type DateTime, int, string, etc. They may decline or might give you something to get you started. You could also try asking Roonius, who works for them now. If anyone knows how to do it, he probably would be it.

August 14th, 2010, 01:52 PM

well as you said its the gray area, and dont we know the answer of nt support such gray area

but as Ray promised during the bmt webinar that these stuffs will be supported on a later date. so i might just wait a little.

thanks.

Custom BarType - PropertyDescriptor

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Custom BarType - PropertyDescriptor