GetBufferPointer method
Provides direct access to the ICanvasPixelArray RGBA buffer from native code (such as an ActiveX control, Browser Helper Object (BHO), or WebBrowser control (WebOC) host).
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Syntax
HRESULT retVal = object.GetBufferPointer(ppBuffer, pBufferLength);
Parameters
- ppBuffer [out]
-
Type: BYTE
Address of a pointer to the ICanvasPixelArray RGBA buffer.
- pBufferLength [out]
-
Type: unsigned long
Length of buffer in bytes.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
This interface provides access to the ICanvasPixelArray data for COM-based code. JavaScript code can access the ICanvasPixelArray object using array syntax.
See also
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