PostProcessFrameBufferEventArgsTryCopyFrameBuffer Method (IntPtr, Int32, Int32, Boolean)

public bool TryCopyFrameBuffer(
	IntPtr destination,
	int destinationStride,
	int destinationCapacityInBytes,
	bool preserveAlpha
)

Public Function TryCopyFrameBuffer ( 
	destination As IntPtr,
	destinationStride As Integer,
	destinationCapacityInBytes As Integer,
	preserveAlpha As Boolean
) As Boolean

Parameters

destination

Type: SystemIntPtr
Start of the destination buffer. This is the start of the buffer whichever row order is asked for, unlike the GDI convention of pointing at the last row.

destinationStride

Type: SystemInt32
Bytes from the start of one destination row to the start of the next. A positive value writes the top row of the image first, a negative value writes the bottom row first.

destinationCapacityInBytes

Type: SystemInt32
Bytes available at destination.

preserveAlpha

Type: SystemBoolean
true to copy the alpha channel as the display engine left it. A frame buffer read back can carry an alpha channel the engine never wrote, which makes the whole frame transparent, so pass false unless the alpha is known to be meaningful. Passing true is also the faster of the two copies, since it leaves the alpha channel alone.

Return Value

Reference