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Vangelis Komninos
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overview issue
May 30th, 2012 at 8:07am
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Hi !
We have the professional edition so I try to use overview window. I am creating a form and 2 activex controls:
AxFlowChart1 and AxOverview1
Then I am trying to connect those 2 like: AxOverview1.Document=AxFlowChart1

The system returns with error since they belong to different types. Could you give me some clue ? an example in VB ?

Thank you in advance
Vangelis Komninos
Selonda S.A.
  
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Stoyo
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Re: overview issue
Reply #1 - May 30th, 2012 at 10:22am
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Hi,

In VB it's enough to set overview.Document = flowchart. If the environment you are using creates some wrapper classes for the controls, try assigning the wrapped COM pointer to the Document property, e.g. in MFC you would get it through the wrapper's GetControlUnknown() method.

I hope that helps,
Stoyan
  
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Vangelis Komninos
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Re: overview issue
Reply #2 - May 30th, 2012 at 10:47am
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Hi again,

Unfortunately when I assign :
AxOverview1.Document = AxFlowChart1
I'm getting the following error:
Unable to cast object of type 'AxFLOWCHARTLib.AxFlowChart' to type 'FLOWCHARTLIB.FlowChart'.

Am I doing something wrong ?

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Vangelis Komninos
  
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Stoyo
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Re: overview issue
Reply #3 - May 30th, 2012 at 10:53am
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Hi,

I suppose 'AxFLOWCHARTLib.AxFlowChart' is the wrapper class created by your environment while 'FLOWCHARTLIB.FlowChart' is the actual COM interface of the flowchartx control. VB6 can convert between these automatically; if the Gupta system you are using cannot, see if there isn't some 'FLOWCHARTLIB.FlowChart' member exposed by the 'AxFLOWCHARTLib.AxFlowChart' wrapper and assign it to Document.

I hope that helps,
Stoyan
  
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Vangelis Komninos
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Re: overview issue
Reply #4 - May 30th, 2012 at 11:05am
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Hi again,

In fact I experimenting with VB before trying with Gupta. So far I cannot make it work in VS 2008. What I have done so far:
1. Create a VB project
2. Add the Control to Form1 (fieldname is AxFlowChart1)
3.Add the overview Control to Form1 (fieldname is AxOverview1)
4.The system automatically add in References 2 libs (AxFLOWCHARTLib and FLOWCHARTLib)
5. In a button I assing: AxOverview1.Document=AxFlowChart1

When I run, I get the error I previously said.


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Vangelis Komninos
  
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Vangelis Komninos
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Re: overview issue
Reply #5 - May 30th, 2012 at 11:30am
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Stoyan I think I found it.
it is AxOverview1.Document = AxFlowChart.GetOcx

Thanks again for your prompt help. see you in Gupta problem soon  Smiley
  
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Stoyo
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Re: overview issue
Reply #6 - May 30th, 2012 at 11:39am
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Ah, so that was VB.NET Smiley
  
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