GDI not supported

Question

According to 

http://msdn.microsoft.com/en-us/library/windows/apps/hh464945(v=VS.85).aspx

GDI is not supported. But I have tonnes of code that render to a HDC. I looked

at ID2D1GdiInteropRenderTarget but it is also not listed as supported. How do I keep all the code that renders to a HDC?

Answer 1

Native rendering code will need to be done with Direct2D.

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Jeff Lambert, Microsoft This posting is provided "AS IS" with no warranties, and confers no rights.

Answer 2

How do we get a Direct2D surface from a XAML control?

Answer 3

I believe that this talk by Kam VedBrat will help explain how to mix DirectX and metro apps: http://channel9.msdn.com/Events/BUILD/BUILD2011/PLAT-766T.  I did not attend the talk so I do not know if it covered D2D and Xaml though.

 

Answer 4

Thanks for the reply Larry, the talk did actually have the answer to the question, not the answer I was hoping for, but I'm hoping that changes at some point. For anyone else interested, the following quote is from the Q&A session at the end of Kam's talk (@ 37mins):

 

Attendee: Can XAML based UI live in the same application with DirectX based UI and then, if so, live in the same actual screen real-estate?

Kam VedBrat: In the developer preview bits that you have today, that's not something that's supported.

Answer 5

According to 

http://msdn.microsoft.com/en-us/library/windows/apps/hh464945(v=VS.85).aspx

GDI is not supported. But I have tonnes of code that render to a HDC. I looked

at ID2D1GdiInteropRenderTarget but it is also not listed as supported. How do I keep all the code that renders to a HDC?

I suppose the only way of achieving this right now is to use the XAML primitives (if you require traditional user interface elements, i.e. buttons, edit boxes etc) such as those in the Windows.UI.Xaml.Shapes namespace. If you don't require those traditional user interface elements, you can use Direct2D to draw to the entire screen.

Answer 6

Thought I would never see this day.

 

So if you want buttons and a rectangle that you can draw into in the same UI, use HTML5 and JavaScript, not C++!

 

 

Answer 7

Thought I would never see this day.

 

So if you want buttons and a rectangle that you can draw into in the same UI, use HTML5 and JavaScript, not C++!

 

 

I'm hoping it's just the developer preview which doesn't support it, as opposed to the WinRT itself. Fingers crossed for updated tools in the future.

Answer 8

I seconded that hope.

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samlsso