Hi,

I am testing an application that uses Mindfusion.Diagramming.DiagramView Class. In the application there is form of diagramView class which has a diagram and then nodes on the diagram. I have make my automation tool select the diagram nodes by text. e.g. if the node has text displayed 'If', it should select it.

I have added references of Mindfusion dlls that my application is using in my automation tool in order to use the exposed functions in my script.

Below function will fullfill my purpose:-
Public Shared Sub SelectRuleNode(ByVal diagram As Diagram, ByVal ruleLabel As String)


For Each node As DiagramNode In diagram.Nodes



'If node Is ShapeNode Then



If CType(node, ShapeNode).Text.ToLower.Equals(ruleLabel) Then


diagram.Selection.Clear()


diagram.Selection.AddItem(node)


Exit For


End If



'End If

Next
End Sub


To get the Diagram object I have to get the DiagramView object first.

My problem is that I am unable to get the diagramView object from the displayed form in the application. I can fetch the window handle of diagramView, when I pass this handle to

Dim dv As DiagramView = DiagramView.FromChildHandle(handle) , it returns Nothing (I am working in VB.Net)..........Can anyone help me in getting this right please.....Thanks, Divya

Thanks for your reply Stoyan...

But I tried with DiagramView.FromHandle initially...but it returns nothing as well...then I switched to FromChildHandle....

Any help is appreciated....

Thanks for your reply Stoyan..

I reffered to SPY++ for the window handle of diagramView...It returns me value in hex which I converted to Dec and passed hardcoded to the FromHandle function just to check the return value.
Below is the code which I used...

Dim handle As IntPtr = 328896     '''Decimal of 504C0, as displayed in Spy++

Dim dv As DiagramView = DiagramView.FromHandle(handle)

I am getting the same window handle programmatically as well(through Process id, I have used UIAUtomationClient.dll's AutomationElement class as well...).

May be I am using the wrong one...but I have no way of finding the right window handle.... could you please give me a sample code to do that...

I am unable to attach the screenshot of SPY++ here to illustrate my problem better...

Stoyan,

Even if I call FromHandle with the value given by Spy++ while the process is running, I am getting 'Nothing'....

Does this mean that the window handle I am using does not have any diagramView control associated with it? 

I have tried another way of getting the handle....

I used AutomationElement class of UIAutomationClient.dll to get the handle of diargamView...It goes as below...

Dim ae As AutomationElement = InfragisticsObjectHelper.GetElementByName(RootElement, "diagramView")

Dim handle As IntPtr = CType(ae.Current.NativeWindowHandle, IntPtr)

This also returns the same window handle which I am getting through SPY....

Could you please help me in identifying "what" is actually missing...why is the appropriate handle not exposed by the application...so that I can ask the developers to expose the required properties.

Thanks a lot for all your help...

If you know the name assigned to the control, such as "diagramView", you can use the method below to find it, e.g. starting from the form:

Function FindChildControl(ByVal control As Control, ByVal name As String) As Control
	If control.Name = name Then Return control
	For Each child As Control In control.Controls
		Dim found As Control = FindChildControl(child, name)
		If found IsNot Nothing Then Return found
	Next
	Return Nothing
End Function

Dim v As DiagramView = CType(FindChildControl(mainForm, "diagView"), DiagramView)  

I hope that helps,
Stoyan

You can get the main form through Application.OpenForms. Does your test code run in the same process at all? That won't work if it's in a different process, neither Control.FromHandle.

I don't have any idea. What is this automation tool you are using, and are you able to call methods on other controls from it - apart from sending UI events such as clicks and keystrokes?

Hi Stoyan,

Is there any input from your side please?