What is alphablend and what functions are used for it?

What is alphablend and what fun开发者_StackOverflow社区ctions are used for it?

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The AlphaBlend function displays bitmaps that have transparent or semitransparent pixels. And the function used for alphablend is :

 BOOL AlphaBlend(HDC hdcDest,
                 int nXOriginDest,
                 int nYOriginDest,
                 int nWidthDest,
                 int nHeightDest,
                 HDC hdcSrc,  
                 int nXOriginSrc,
                 int nYOriginSrc,
                 int nWidthSrc,
                 int nHeightSrc,
                 BLENDFUNCTION blendFunction
                );

Please refer the following link-> http://msdn.microsoft.com/en-us/library/aa452850.aspx

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The AlphaBlend function displays bitmaps that have transparent or semitransparent pixels.