c# - Keep Mouse Events bubbling from WindowsFormsHost on -

i have winforms control within wpf windowsformshost. winforms control passive , must not handle mouse event. mouse events should raised usual inner wpf control in wpf visual tree, windowsformshost (or next one). no event triggered @ all.

how should configure windowsformshost, winforms control, in order achieve this?

remark: keydown , keyup behave expected. mouse events don't, illustrated following snoop screenshot:

indeed winforms control keeps mouse event himself , doesn't forward event host. solution subscribe winforms mousedown event , generate programmatically routed event.

i overrided windowsformshost following , rocks:

(remark: behavior may more flexible)

public class extendedwindowsformshost : windowsformshost {     public extendedwindowsformshost()     {         childchanged += onchildchanged;     }      private void onchildchanged(object sender, childchangedeventargs childchangedeventargs)     {         var previouschild = childchangedeventargs.previouschild control;                     if (previouschild != null)         {             previouschild.mousedown -= onmousedown;         }         if (child != null)         {             child.mousedown += onmousedown;         }     }      private void onmousedown(object sender, mouseeventargs mouseeventargs)     {         mousebutton? wpfbutton = converttowpf(mouseeventargs.button);         if (!wpfbutton.hasvalue)             return;          raiseevent(new mousebuttoneventargs(mouse.primarydevice, 0, wpfbutton.value)         {             routedevent = mouse.mousedownevent,             source = this,         });     }      private mousebutton? converttowpf(mousebuttons winformbutton)     {         switch (winformbutton)         {             case mousebuttons.left:                 return mousebutton.left;             case mousebuttons.none:                 return null;             case mousebuttons.right:                 return mousebutton.right;             case mousebuttons.middle:                 return mousebutton.middle;             case mousebuttons.xbutton1:                 return mousebutton.xbutton1;             case mousebuttons.xbutton2:                 return mousebutton.xbutton2;             default:                 throw new argumentoutofrangeexception("winformbutton");         }     } }