ppc或pc实现9段拉伸。

采用com实现，效率很低，需要很好优化。

      IImage* pImage = pImageinfo->pImage;

        RECT dstRect = *pdstRect;

        //for icon
        ImageInfo tempimageinfo;
        pImage->GetImageInfo(&tempimageinfo);
        SIZE size;
        pImage->GetPhysicalDimension(&size);
      
            //left,top
            RECT rcSrc1 = {0,0,pImageinfo->marginleft*size.cx/tempimageinfo.Width, pImageinfo->margintop*size.cy/tempimageinfo.Height};
            RECT rcDst1 = {dstRect.left, dstRect.top, dstRect.left+pImageinfo->marginleft, dstRect.top+pImageinfo->margintop};
            pImage->Draw( hdc, &rcDst1, &rcSrc1);

            //left,bottom
            RECT rcSrc2 = {0,size.cy-pImageinfo->marginbottom*size.cy/tempimageinfo.Height,pImageinfo->marginleft*size.cx/tempimageinfo.Width, size.cy};
            RECT rcDst2 = {dstRect.left, dstRect.bottom-pImageinfo->marginbottom, dstRect.left+pImageinfo->marginleft, dstRect.bottom};
            pImage->Draw( hdc, &rcDst2, &rcSrc2);

            //right,top
            RECT rcSrc3 = {size.cx-pImageinfo->marginright*size.cx/tempimageinfo.Width, 0,
                size.cx, pImageinfo->margintop*size.cy/tempimageinfo.Height};
            RECT rcDst3 = {dstRect.right-pImageinfo->marginright, dstRect.top, dstRect.right, dstRect.top+pImageinfo->margintop};
            pImage->Draw( hdc, &rcDst3, &rcSrc3);

            //right,bottom
            RECT rcSrc4 = {size.cx-pImageinfo->marginright*size.cx/tempimageinfo.Width, size.cy-pImageinfo->marginbottom*size.cy/tempimageinfo.Height
                ,size.cx, size.cy };
            RECT rcDst4 = {dstRect.right-pImageinfo->marginright, dstRect.bottom-pImageinfo->marginbottom, dstRect.right, dstRect.bottom};
            pImage->Draw( hdc, &rcDst4, &rcSrc4);

            //top
            RECT rcSrc13 = {rcSrc1.right, rcSrc1.top, rcSrc3.left, rcSrc3.bottom};
            RECT rcDst13 = {rcDst1.right, rcDst1.top, rcDst3.left, rcDst3.bottom};
            pImage->Draw( hdc, &rcDst13, &rcSrc13);

            bottom
            RECT rcSrc24 = {rcSrc2.right, rcSrc2.top, rcSrc4.left, rcSrc4.bottom};
            RECT rcDst24 = {rcDst2.right, rcDst2.top, rcDst4.left, rcDst4.bottom};
            pImage->Draw( hdc, &rcDst24, &rcSrc24);

            //left
            RECT rcSrc12 = {rcSrc1.left, rcSrc1.bottom, rcSrc2.right, rcSrc2.top};
            RECT rcDst12 = {rcDst1.left, rcDst1.bottom, rcDst2.right, rcDst2.top};
            pImage->Draw( hdc, &rcDst12, &rcSrc12);

            right
            RECT rcSrc34 = {rcSrc3.left, rcSrc3.bottom, rcSrc4.right, rcSrc4.top};
            RECT rcDst34 = {rcDst3.left, rcDst3.bottom, rcDst4.right, rcDst4.top};
            pImage->Draw( hdc, &rcDst34, &rcSrc34);

            center
            RECT rcSrc14 = {rcSrc1.right, rcSrc1.bottom, rcSrc4.left, rcSrc4.top};
            RECT rcDst14 = {rcDst1.right, rcDst1.bottom, rcDst4.left, rcDst4.top};
            pImage->Draw( hdc, &rcDst14, &rcSrc14);

            return 1;