微调加载图像质量

modules/base/HGImage.cpp

@@ -530,6 +530,7 @@ static HGResult LoadGdiImage(Gdiplus::Image* pImage, const HGImageRoi* roi, HGUI
 		HDC hMem = CreateCompatibleDC(NULL);
 		HBITMAP hOldBmp = (HBITMAP)SelectObject(hMem, hBmp);
 		Gdiplus::Graphics graphics(hMem);
+		graphics.SetInterpolationMode(Gdiplus::InterpolationModeHighQuality);
 		graphics.DrawImage(pImage, (INT)roi2.left, (INT)roi2.top, 
 			(INT)(roi2.right - roi2.left), (INT)(roi2.bottom - roi2.top));
 		SelectObject(hMem, hOldBmp);