void img_PointerReleased(object sender, PointerRoutedEventArgs e) { si = Target.getImage(); if (si.Source == null) { return; } //double dx = Canvas.GetLeft(si) + Canvas.GetLeft(Target.SelectLayer); //double dy = Canvas.GetTop(si) + Canvas.GetTop(Target.SelectLayer); Point ep = e.GetCurrentPoint(si).Position; if (Math.Abs(sp.X - ep.X) < 1.1 && Math.Abs(sp.Y - ep.Y) < 1.1) { Point tp = DrawGraphic.getImagePosition(sp, si); Color c = pt.GetPixel(si.Source as WriteableBitmap, Convert.ToInt32(tp.X), Convert.ToInt32(tp.Y)); ShowColor(c); sb = null; sb = new WriteableBitmap(1, 1); pt.SetPixel(sb, 0, 0, c); ColorImg.Source = sb; //ColorImg. } else { int sx, sy, w, h; Point isp = DrawGraphic.getImagePosition(sp, si); Point iep = DrawGraphic.getImagePosition(ep, si); if (isp.X < iep.X) { sx = Convert.ToInt32(isp.X); w = Convert.ToInt32(iep.X - isp.X); } else { sx = Convert.ToInt32(iep.X); w = Convert.ToInt32(isp.X - iep.X); } if (isp.Y < iep.Y) { sy = Convert.ToInt32(isp.Y); h = Convert.ToInt32(iep.Y - isp.Y); } else { sy = Convert.ToInt32(iep.Y); h = Convert.ToInt32(isp.Y - iep.Y); } if (w == 0) { w = 1; } if (h == 0) { h = 1; } sb = null; sb = pt.getImageArea(si.Source as WriteableBitmap, sx, sy, w, h); ColorImg.Source = sb; Color c = pt.getAverageColor(sb); ShowColor(c); } sp = DrawGraphic.getImagePosition(sp, si); }