public static extern int PXCV_DrawPageToDIBSection(IntPtr hDoc, Int32 page_num, ref PXV_CommonRenderParameters pParams, IntPtr hBaseDC, Int32 backcolor, ref IntPtr hBitmap, IntPtr hSection, Int32 dwOffset);
public static extern int PXCV_DrawPageToDC(IntPtr hDoc, Int32 page_num, IntPtr hDC, ref PXV_CommonRenderParameters pParams);
