如何将本机窗口处理程序 (HWND) 嵌入到 C# WPF 应用程序中

Question

I'm working on an application for making video calls using pjsip.

I have:

1. The core library: A static library, which uses pjsua2, in C++.
2. A dynamic library for the C++/CLI bridge that wraps all the public interfaces from 1.
3. A WPF app, that links against 2.

The WPF app can open the capture device. Pjsip creates a sdl window for the video preview, and returns its HWND as a void* in the C++ side.

I am "casting" it into a std::string -- using std::stringstream stream operators -- and marshalling it to the WPF side.

I'd like to embed that window into my WPF main window. Is that possible?

Answer 1

You can use Hwnd​Host class and host native windows in WPF.

Hwnd​Host is part of System.Windows.Interop WPF namespace.

Here is Microsoft example, but it is little tedious.

https://docs.microsoft.com/en-us/dotnet/framework/wpf/advanced/walkthrough-hosting-a-win32-control-in-wpf