ISurfaceImageSourceNativeWithD2D::BeginDraw method
Initiates an update to the associated SurfaceImageSource or VirtualSurfaceImageSource.
Syntax
HRESULT BeginDraw( [in] REFRECT updateRect, [in] REFIID iid, [out] void **updateObject, [out] POINT *offset );
Parameters
- updateRect [in]
-
The region of the surface that will be drawn into.
- iid [in]
-
IID used to lookup the object for drawing.
- updateObject [out]
-
Receives a COM pointer to the drawing object. Based on iid, this may be either an IDXGISurface, when not using batched drawing, or a shared ID2D1DeviceContext, when using batched Direct2D drawing to improve performance when updating Direct2D content across multiple surfaces.
- offset [out]
-
Receives the point (x,y) offset of the surface that will be drawn into.
Return value
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Requirements
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Minimum supported client |
Windows 8.1 [desktop apps | Windows Store apps] |
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Minimum supported server |
Windows Server 2012 R2 [desktop apps | Windows Store apps] |
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Header |
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IDL |
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DLL |
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See also
- ISurfaceImageSourceNativeWithD2D
- SurfaceImageSource
- VirtualSurfaceImageSource
- DirectX and XAML interop