For e.g. PaintEvent() from pure Go code? Not yet, but I have some idea on how to make it possible.
Until then, a nice feature of CGO is you can write one custom Qt subclass in a .cpp file in the same folder as your .go files. Your C++ will be compiled with `go build`, and you can use your custom class directly from Go/MIQT. So even if some advanced Qt feature is not in the binding, anything is still possible at least. I'll make an example about this.
I contribute to NodeGui, Qt on Nodejs. It doesn't try to emulate the C++ API by allowing subclassing. Instead it exposes most methods on QWidget classes/subclasses which process QEvent objects (and their subclasses) in the form of events which you can subscribe to as an application. You can listen to signals and also QEvent related traffic in much the same way. So, if you want to subclass a QWidget to do your own custom rendering/painting, you would create an instance of QWidget and then listen to/hook into, the incoming requests to repaint. Qt sees a normal QWidget instance, but you can customise it do act like the subclass you desire. This avoids any attempt to do a real C++ subclass at runtime. Internally, NodeGui subclasses almost every QWidget (and more) to hook into them to allow this. This works far better than you might expect and saves a ton of complexity.
mappu|1 year ago
Until then, a nice feature of CGO is you can write one custom Qt subclass in a .cpp file in the same folder as your .go files. Your C++ will be compiled with `go build`, and you can use your custom class directly from Go/MIQT. So even if some advanced Qt feature is not in the binding, anything is still possible at least. I'll make an example about this.
sime2009|1 year ago