Window transparency has "halo" artifact

[marquedej]

Is there a "trick" to ensuring that the alpha-channel is enabled so that I can dispense completely with a color-key transparent color for the background?

You need to set CefWindowInfo.transparent_painting_enabled to true and use HTML content that does not specify a background color.

Thanks. That's helped me make progress ...

The initial draw is correctly blending with the windows behind it. However, if I move or resize the window, it's not picking up the new/updated background.

Any thoughts?

Thanks for your patience!

-- Mark

[MartinM]

Did you create your window using the WS_EX_LAYERED flag?