Ghostscript.NET.Viewer.GhostscriptViewer.RaiseDisplayPage C# (CSharp) Method

        internal void RaiseDisplayPage(GhostscriptViewerViewEventArgs e)
        {
            this.OnDisplayPage(e);
        }

        public override int Page(IntPtr handle, IntPtr device, int copies, int flush)
        {
            _viewer.FormatHandler.ShowPagePostScriptCommandInvoked = true;

            if (!_viewer.ProgressiveUpdate)
            {
                int bytesPerPixel = 3;

                _destImage.Lock();

                IntPtr tempTile = Marshal.AllocHGlobal(_destImage.Stride * _destImage.Height);

                ImageMemoryHelper.CopyImagePartFrom(_srcImage, tempTile, 0, 0, _destImage.Width, _destImage.Height, _srcStride, bytesPerPixel);
                ImageMemoryHelper.FlipImageVertically(tempTile, _destImage.Scan0, _destImage.Height, _destImage.Stride);

                Marshal.FreeHGlobal(tempTile);

                _destImage.Unlock();
            }

            _viewer.RaiseDisplayPage(new GhostscriptViewerViewEventArgs(_destImage, new Rectangle(0, 0, _destImage.Width, _destImage.Height)));

            return(0);
        }