ISurfaceImageSourceNative::BeginDraw method (windows.ui.xaml.media.dxinterop.h)

Opens the supplied DXGI surface for drawing.

Syntax

HRESULT BeginDraw(
  [in]  RECT         updateRect,
  [out] IDXGISurface **surface,
  [out] POINT        *offset
);

[in] updateRect

The region of the surface that will be drawn into.

[out] surface

Receives a pointer to the surface for drawing.

[out] offset

Receives the point (x,y) offset of the surface that will be drawn into.

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

If the app window that contains the SurfaceImageSource isn't active, like when it's suspended, calling the BeginDraw method returns an error.

Requirement	Value
Minimum supported client	Windows 8.1 [UWP apps only]
Minimum supported server	Windows Server 2012 R2 [UWP apps only]
Target Platform	Windows
Header	windows.ui.xaml.media.dxinterop.h
DLL	Windows.UI.Xaml.dll