WebEye doesn't render in "not selected" tabitem

[briankandersen]

I have a tabcontrol with two tabitems. I initialize WebEye in the second tabtite. When I switch to that Item, WebEye is just White. If I initialize it in TabItem #1, it works. Also, if I initialize WebEye on Selector.SelectionChanged on tabitem #2 it still doesn' render anything. Only if TabItem #2 is the default selected item wil it work in TabItem #2

[jacobbo]

Could you please attach a sample project that reproduces the issue?

On Wed, 2 May 2018 at 09:27, Spaizkadett notifications@github.com wrote:

I have a tabcontrol with two tabitems. I initialize WebEye in the second tabtite. When I switch to that Item, WebEye is just White. If I initialize it in TabItem #1 https://github.com/jacobbo/WebEye/pull/1, it works. Also, if I initialize WebEye on Selector.SelectionChanged on tabitem #2 https://github.com/jacobbo/WebEye/issues/2 it still doesn' render anything. Only if TabItem #2 https://github.com/jacobbo/WebEye/issues/2 is the default selected item wil it work in TabItem #2 https://github.com/jacobbo/WebEye/issues/2

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[briankandersen]

If you change "\WebEye\WebCameraControl\WPF\WebCameraDemo\MainWindow.xaml" to the attached file, hit start and switch to webcam tabitem, you can see it doesn't render, even though the camera light is on.

MainWindow.xaml.txt

If you go to the WebCam TabItem first and then hit Start it works

[jacobbo]

Sorry, I'm afraid, the visibility of the hosting control is a requirement. I use the HwndSource class under the hood and it creates its window only when gets visible.

As a workaround you can show the second tab for a fraction of a second and then go back to the first one.