Hello Again.
I found 2 probems wit handlestyles, probably like always Sotyo or any other user have the answers:

Answer 1:
The handles are always outside of the object, is possible setup the handles for be showed in the exat border of the node, or if possile isnde the node?  HatchHandles3 is what i use alwyas.

Answer 2:
HatchHandles3is perfect for what im doing, is possible for some object draw that handled but without resize disable, just move available?


One more final answer, where can find some example of how cutomize HatchHandles3?
Is possible make the ine between square points be invisible (invisible but ned work in same way HatchHandles3 do)

Bets regards

Sorry, im not lazy, but not understand that examples:

 form.DrawAdjustmentHandles += new DrawItemEventHandler(form_DrawAdjustmentHandles);


form.HitTestAdjustmentHandles += new HitTestEventHandler(form_HitTestAdjustmentHandles);



   void form_HitTestAdjustmentHandles(object sender, HitTestEventArgs e)
{
// this is in diagram coordinates
Rect r = e.Item.GetBounds();
r.X -= 0;
r.Width = 0;
if (r.Contains(e.MousePosition))
e.HitResult = 0; // move
}

void form_DrawAdjustmentHandles(object sender, DrawItemEventArgs e)
{
// this is in local coordinates
Rect r = e.Item.GetBounds();
r.Y = 0;
r.Width = 15;
r.X = -20;
e.Graphics.DrawRectangle(Brushes.White, new Pen(), r);

DiagramNode node = e.Item as DiagramNode;
 if (node != null)
{
node.HandlesStyle = HandlesStyle.HatchHandles3;
//node.DrawHandles(e.Graphics, Brushes.Black);
node.HandlesStyle = HandlesStyle.Custom;
}
}



 

In first place i have error:

Error2The best overloaded method match for 'MindFusion.Diagramming.Wpf.DiagramItem.DrawHandles(System.Windows.Media.Drawing
Context, MindFusion.Diagramming.Wpf.HandlesVisualStyle)' has some invalid arguments

and


Error5Argument 2: cannot convert from 'System.Windows.Media.SolidColorBrush' to 'MindFusion.Diagramming.Wpf.HandlesVisualStyle'

For now just for test how this work i comented : node.DrawHandles(e.Graphics, Brushes.Black);

Now i run and really nt understand how this work, but i stuck on this, not understand, this drag a big rectangle at the left of my node.

Please is to much request and example for show HatchHandles3 inside of my nodes exactly in the border?
Probably cna be great have some style work like HatchHandle3 , in the border of object but inside : )

If possible, can show complete example for do this now?

, if not..... is ok, some times i feel a little of shame to lot of request i send in the last weeks

Also i have a second trouble, i checkk al examples and cant find any way to make handlestyiles can resize node in same proportion for width height.
basically i need for some specific node resize node without change the aspect of node.
Example, if node is square, when i move the mouse for resize, no matter what i do or how moe te node can be resized but without change the proportion .
How is posible do this?

Best regrds.

I have this error when run your example:


System.InvalidOperationException was unhandled
Message=Collection was modified; enumeration operation may not execute.
Source=mscorlib
StackTrace:

at System.Collections.ArrayList.ArrayListEnumeratorSimple.MoveNext()

at MindFusion.Diagramming.Wpf.x2965d493a804ca6b.x7aa38d23def3ba94(Rect x559038a612e67522)

at MindFusion.Diagramming.Wpf.x2965d493a804ca6b.ArrangeOverride(Size arrangeSize)

at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)

at System.Windows.UIElement.Arrange(Rect finalRect)

at MindFusion.Diagramming.Wpf.Diagram.ArrangeOverride(Size finalSize)

at System.Windows.FrameworkElement.ArrangeCore(Rect finalRect)

at System.Windows.UIElement.Arrange(Rect finalRect)

at System.Windows.ContextLayoutManager.UpdateLayout()

at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)

at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()

at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()

at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)

at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.DispatcherOperation.InvokeImpl()

at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)

at System.Threading.ExecutionContext.runTryCode(Object userData)

at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(
TryCode code, CleanupCode backoutCode, Object userData)

at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Windows.Threading.DispatcherOperation.Invoke()

at System.Windows.Threading.Dispatcher.ProcessQueue()

at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)

at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

at System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)

at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)

at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)

at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)

at System.Windows.Threading.Dispatcher.Run()

at System.Windows.Application.RunDispatcher(Object ignore)

at System.Windows.Application.RunInternal(Window window)

at System.Windows.Application.Run(Window window)

at System.Windows.Application.Run()

at Project.App.Main() in C:\Users\MainWindow\obj\x86\Debug\App.g.cs:line 0

at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)

at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()

at System.Threading.ThreadHelper.ThreadStart_Context(Object state)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)

at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.ThreadHelper.ThreadStart()
InnerException:


What im doing wrong?

Any news about this?
Best regards.

???....absolutly stuck on this 

void form_DrawAdjustmentHandles(object sender, DrawItemEventArgs e)
{
var node = e.Item as DiagramNode;
var size = new Size(form.AdjustmentHandlesSize,form.AdjustmentHandlesSize);

if (node != null)
{
         
          var TopLeft = new Point(0, 0);
          e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush, form.SelectedItemHandlesStyle.HandlePen, new Rect(TopLeft, size));

          var TopMiddle = new Point(node.Bounds.Width / 2 - size.Width / 2, 0);
          e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush, form.SelectedItemHandlesStyle.HandlePen, new Rect(TopMiddle, size));

          var TopRight = new Point(node.Bounds.Width  - size.Width , 0);
          e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush, form.SelectedItemHandlesStyle.HandlePen, new Rect(TopRight, size));


          var MiddleLeft = new Point(0, node.Bounds.Height /2 - size.Height /2);
          e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush, form.SelectedItemHandlesStyle.HandlePen, new Rect(MiddleLeft, size));

          var MiddleRight = new Point(node.Bounds.Width - size.Width, node.Bounds.Height / 2 - size.Height / 2);
          e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush, form.SelectedItemHandlesStyle.HandlePen, new Rect(MiddleRight, size));

          var bottomLeft = new Point(0, node.Bounds.Height - size.Height);
          e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush, form.SelectedItemHandlesStyle.HandlePen,new Rect(bottomLeft, size));
      
        
    var bottomMiddle = new Point(node.Bounds.Width / 2 - size.Width / 2,node.Bounds.Height - size.Height);
    e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush,form.Selected
ItemHandlesStyle.HandlePen,new Rect(bottomMiddle, size));

           var bottomRight = new Point(node.Bounds.Width  - size.Width ,node.Bounds.Height - size.Height);
           e.Graphics.DrawRectangle(form.SelectedItemHandlesStyle.HandleBrush,form.Selected
ItemHandlesStyle.HandlePen,new Rect(bottomRight, size));
           
}
}

I have handles now in the place i want.
I think is all needed to make handles work, but now i cant move node or resize.

Im tring and make this work and this is what i have.
When i crete the node i enabled:
node.EnabledHandles = AdjustmentHandles.ResizeHandles;

void form_HitTestAdjustmentHandles(object sender, HitTestEventArgs e)
{


var node = e.Item as DiagramNode;

if (node != null)

{

node.HandlesStyle = HandlesStyle.HatchFrame;

int handle = -1;

if (node.HitTestHandle(e.MousePosition, ref handle))


e.HitResult = handle;

node.HandlesStyle = HandlesStyle.Custom;

if (handle < 8 && node.Bounds.Contains(e.MousePosition))


e.HitResult = 8;

}
}


This way is more simple , but only can move, cant move and resize at same time and not figure how do resize and move ats ame time in this way.

void form_HitTestAdjustmentHandles(object sender, HitTestEventArgs e)
{

var node = e.Item as DiagramNode;

Rect r = e.Item.GetBounds();

if (r.Contains(e.MousePosition))

e.HitResult = 8;

}

For move this work perfect, now i cna move, but is impossible resize in easy way, is very hard catch the handles for resize, imagine that happen due incorrect alineation with my new custom handles.
Please some guide to solve this?

Best regards.

Hi Pablo,

We have made the method that draws adjustment handles public. It's the DrawAdjustmentHandles method from the InternalUtils class here:

https://mindfusion.eu/_beta/wpfdiagram252.zip

Now you can call it to draw the standard adjustment handles when custom drawing.

I hope that helps,
Stoyan