Allow app to disable transparent background in windowless mode

[jamespearce2006]

Currently, ManagedCefBrowserAdapter always sets transparent to TRUE when setting windowless mode.

Transparency isn't always desired, and attempting to place the browser control in a painted outer control can have ugly side-effects when resizing the app, if its colour is different from the containing window.

This PR lets the ChromiumWebBrowser specify whether transparency should be set.

[rassilon]

Does it make sense to make the same change to the Offscreen control as well?

[amaitland]

No need for an overload as this is an internal method.

[amaitland]

Does it make sense to make the same change to the Offscreen control as well?

Yes

This topic was discussed a while ago. I think the general idea was to add the property to the BrowserSettings. Thoughts?

[jamespearce2006]

I've made the suggested change - to use BrowserSettings instead. It seems a lot cleaner.

[amaitland]

I've made the suggested change - to use BrowserSettings instead. It seems a lot cleaner

Cool 😄

I made a few changes, changed to using GetValueOrDefault to simplify the code. Uppercased the S in OffScreen to match other project references. Changed to using an auto property in BrowserSettings

3b27034 6805c18

Thanks for the contribution 👍