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Hot Topic (More than 10 Replies) scroll the screen using mouse (Read 8351 times)
madhan1
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scroll the screen using mouse
Jun 18th, 2012 at 9:21am
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Dear team,

              i want to scroll the screen using mouse other than horizontal & vertical bar.
kindly help me.
  
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Stoyo
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Re: scroll the screen using mouse
Reply #1 - Jun 18th, 2012 at 10:13am
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Setting DiagramView.Behavior = Pan will let you scroll by dragging any part of the view with the mouse. If you prefer to scroll from the MouseWheel handler, it should look like this:

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void diagramView_MouseWheel(object sender,
                             MouseEventArgs args)
{
            float newScrollY = diagramView.ScrollY - args.Delta / 50;
            if (newScrollY > diagram.Bounds.Top)
                        diagramView.ScrollY = newScrollY;
}


I hope that helps,
Stoyan
  
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madhan1
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Re: scroll the screen using mouse
Reply #2 - Jun 18th, 2012 at 12:58pm
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thanks stoyan,

         but i want drag and move with horizontal & vertical
  
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Re: scroll the screen using mouse
Reply #3 - Jun 18th, 2012 at 6:56pm
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Quote:
but i want drag and move with horizontal & vertical


Sorry, I cannot understand that.
  
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madhan1
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Re: scroll the screen using mouse
Reply #4 - Jun 19th, 2012 at 4:17am
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dear stoyan,

           when i use DiagramView.Behavior=pan; i can not  create / select the links.but my need is
1. if i click on the node i allow to create the links.
2. if i am just dragging on diagram view then i have to scroll horizontal & vertical
  
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Re: scroll the screen using mouse
Reply #5 - Jun 19th, 2012 at 7:05am
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Call diagram.GetNodeAt from DiagramView.MouseMove handler and toggle Behavior between DrawLinks / Pan depending on whether there's any node at the mouse position.

I hope that helps,
Stoyan
  
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Re: scroll the screen using mouse
Reply #6 - Jun 20th, 2012 at 5:45am
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Dear stoyan,
thanks a lot. but having trouble with tables & links. now i am trying with getitemat


the code is here

Point f = new Point(e.X, e.Y);

if(diagram.GetItemAt(f,false)!=null)
{
diagramView.Behavior = Behavior.DrawLinks;
}
else
{
diagramView.Behavior = Behavior.Pan;
}

some time i cannot get the link to be selected in tables Embarrassed
  
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Re: scroll the screen using mouse
Reply #7 - Jun 20th, 2012 at 7:22am
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If (e.X,e.Y) is the mouse position you get in MouseMove handler, you will have to convert it from pixels to diagram coordinates using the DiagramView.ClientToDoc method. Otherwise GetItemAt will not return the correct object.

I hope that helps,
Stoyan
  
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Re: scroll the screen using mouse
Reply #8 - Jun 20th, 2012 at 7:34am
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Thanks stoyan,
        it works  now Smiley
  
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madhan1
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Re: scroll the screen using mouse
Reply #9 - Jul 4th, 2012 at 6:35am
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Dear stoyan,

               now i cann't drag the node after the visible of diagram view. i have manually drag the diagram view and then move the nodes.
  
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Re: scroll the screen using mouse
Reply #10 - Jul 4th, 2012 at 7:24am
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Enable the AutoScroll property and the DiagramView should scroll automatically when you drag a node toward the view's edge.

I hope that helps,
Stoyan
  
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Re: scroll the screen using mouse
Reply #11 - Jul 4th, 2012 at 7:54am
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Dear stoyan,

        i have already enabled the autoscroll = true in diagram view. if i drag the  mouse with out the node then the diagramview is moving on the edge but if i drag with the node then it is not working
  
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Re: scroll the screen using mouse
Reply #12 - Jul 5th, 2012 at 7:08am
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dear stoyan,

          kindly help i am waiting for you advice.
  
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Re: scroll the screen using mouse
Reply #13 - Jul 5th, 2012 at 5:49pm
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I can see nothing like this in my test app. Try adding your initialization and event handling code to the attached test project to find out what causes it.

I hope that helps,
Stoyan
  
AutoScrollTest.zip (Attachment deleted)
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Re: scroll the screen using mouse
Reply #14 - Jul 6th, 2012 at 7:20am
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Thanks Stoyan,

your code is working fine when it is in normal mode. when i maximize the form it is not working.
FYI :
i am using "FlowChart.NET component, version 5.3.3" and my insulation does n't have have the MindFusion.Scripting.dll .
  
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