Unity App Embeded in WPF App Not working properly

Unity Engine
1

I’m currently building an WPF aplication and using Unity to preview 3D objects. For that, I decided to embed Unity within my app, so it looks seamless. And It does! I just have 2 problems that I can’'t seem to fix and need your help to do so.

Problem 1: I cannot control the embeded Unity window.
When I run my WPF app, the embeded Unity app ocupies the same space as my application.
I have to maximize my application window in order to view what is behind Unity window.
I would like to control the size of the embeded Unity on load, and also when the WPF app is resized.

Problem 2: I am unable to get Input.GetAxis(“Mouse X”) (This allways returns 0)
If I run my Unity build manually (not through my WPF app), I can see a textbox on the top left corner outputting Input.GetAxis(“Mouse X”), but if I run my WPF app with the embeded Unity, the top left corner textbox will allways be 0.

Download both Unity and WPF sample projects.
https://www.dropbox.com/s/guyvmligl4e6pqx/Projects.rar?dl=0

PS: I said I’m currently building in WPF but that is wrong. I’ve already did this in WinForm but must convert it to WPF. I don’t have these problems in WinForm

2

I have nothing constructive to say to this as it’s been a while since I’ve worked in WPF.

However, I’ve added a DirectX viewport to both WinForms and WPF, and I remember it being a lot harder to do so in WPF in such a way it looked seamless, and did what I wanted (i.e. still able to draw WPF UI elements over on top of the DirectX viewport). Plus, it was slow as hell (much slower than WinForms).

So I ended up just rendering the DirectX stuff into a buffer in C++, then push that into a texture at the C# level. This at least gave me full flexibility over how to display it.

Like I said, it’s been a while since I’ve done this so I don’t have code to show. Hopefully that should help trigger some brainstorming.

3

By pushing that into a texture, were you still able to input interaction into DirectX (able to input mouse click events)?

4

Well, an input layer was added so that input events could be send to whatever needs these events. It’s better to keep a clear separation between the input implementation and listeners anyway, IMO.

In my case, a bunch of functions like OnTextureClick(x,y), OnTextureButtonDown(key), etc. were created and handled (after p/invoking down into C++).