Sets the size of the scaled transform output.
HRESULT retVal = object.SetOutputSize(OutSize, bMaintainAspect);
Type: const SIZE
Size of the output to use for scaling.
BOOL that determines whether to preserve the aspect ratio of the source to scale. If TRUE, the output result is scaled to the specified size while preserving its aspect ratio. If FALSE, the input dimensions are stretched to match the output size.