![c#](https://habrastorage.org/r/w120/webt/5a/de/18/5ade18911a778864474783.png)
C#
3
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if (che.GetType().ToString().IndexOf("CheckBox") > -1)
// IUnknown* pDesigner
IntPtr handle = IntPtr(pDesigner);
Object^ managedObject = System::Runtime::InteropServices::Marshal::GetObjectForIUnknown(handle);