void ID2D1RenderTarget::FillOpacityMask([In] ID2D1Bitmap* opacityMask,[In] ID2D1Brush* brush,[In] D2D1_OPACITY_MASK_CONTENT content,[In, Optional] const D2D_RECT_F* destinationRectangle,[In, Optional] const D2D_RECT_F* sourceRectangle)

'宣言
 
Public Overloads Sub FillOpacityMask( _
   ByVal opacityMask As Bitmap, _
   ByVal brush As Brush, _
   ByVal content As OpacityMaskContent, _
   ByVal destinationRectangle As System.Nullable(Of RectF), _
   ByVal sourceRectangle As System.Nullable(Of RectF) _
) 

public void FillOpacityMask( 
   Bitmap opacityMask,
   Brush brush,
   OpacityMaskContent content,
   System.Nullable<RectF> destinationRectangle,
   System.Nullable<RectF> sourceRectangle
)