GetOptionalContentGroupPrintable

  SetOptionalContentGroupPrintable

  GetOptionalContentGroupVisible

  SetOptionalContentGroupVisible

You can also make form field printing optional with

private void button7_Click(object sender, EventArgs e)

        {

            // Create three new optional content groups

            int CapturedPageID;

            double PageHeight;

            double PageWidth;

            int fileA, fileB;

            int OCG_Back = 0;

            int layer;

            // True = create a background OCG layer.  False = Create a fixed background.

            bool useBackgroundOCG = true;

            QP.NewDocument();

            QP.SetOrigin(1);

            // Save file to disk with new layers

            PageHeight = QP.PageHeight();

            PageWidth = QP.PageWidth();

            // QP.SaveToFile("layers.pdf");

            fileA = QP.SelectedDocument();

            // You can only use the DrawCapturedPage function if the captured page is in the same

            // document, so first we'll need to merge the two pages that we wish to overlay together

            // into one document.

            //QP.LoadFromFile("debenu final tm.pdf");

            QP.LoadFromFile("JavaScript.pdf");

            fileB = QP.SelectedDocument();

            // After merging FileB is automatically deleted, leaving only FileB which is now a combination of FileA and FileB

            QP.SelectDocument(fileA);

            QP.MergeDocument(fileB);

            QP.SaveToFile("combined.pdf");

            // Capture the second page in the merged document

            CapturedPageID = QP.CapturePage(2);

            QP.SelectDocument(fileA);

            QP.SelectPage(1);

            

            // Create a background OCG if useBackgroundOCG = true

            if (useBackgroundOCG)

                OCG_Back = QP.NewOptionalContentGroup("Background");

            QP.DrawText(100, 100, "Background");

            // Draw the captured page onto the currently selected OCG

            int ret = QP.DrawCapturedPage(CapturedPageID, 0, 0, PageWidth, PageHeight);

            if (useBackgroundOCG)

            {

                QP.SetLayerOptional(OCG_Back);

                QP.SetOptionalContentGroupVisible(OCG_Back, 1);

            }

            // Now add the two OCG's with some text.

            int OCG1 = QP.NewOptionalContentGroup("Layer 1");

            int OCG2 = QP.NewOptionalContentGroup("Layer 2");

            // Select the page that you want the layers to be associated with.

            QP.SelectPage(1);

            // Add OCG 1

            layer = QP.NewLayer();

            QP.SelectLayer(layer);

            QP.DrawText(180, 100, "Layer 1");

            QP.SetLayerOptional(OCG1);

            QP.SetOptionalContentGroupVisible(OCG1, 1);

            // Add OCG 2

            layer = QP.NewLayer();

            QP.SelectLayer(layer);

            QP.DrawText(260, 100, "Layer 2");

            QP.SetLayerOptional(OCG2);

            QP.SetOptionalContentGroupVisible(OCG2, 1);

            // Save the stitched file to disk

            QP.SaveToFile("ocg.pdf");

            System.Diagnostics.Process.Start(@"ocg.pdf");

        }