ReplaceExportImage.cs

private void ReplaceImage(PDFXEdit.IPXV_Document Doc, PDFXEdit.IPXV_Inst Inst)
{
	int nID = Inst.Str2ID("op.document.replaceImage", false);
	PDFXEdit.IOperation Op = Inst.CreateOp(nID);
	var input = Op.Params.Root["Input"];
	input.Add().v = Doc.CoreDoc;
	PDFXEdit.ICabNode options = Op.Params.Root["Options"];
	int nSelID = Inst.Str2ID("selection.contentItems", false);
	uint nPage = 0; //Page number that will have it's image content item edited
	//First we need to create content items selection
	PDFXEdit.IPXV_ContentItemsSelection itSel = (PDFXEdit.IPXV_ContentItemsSelection)Doc.CreateStdSel((uint)nSelID);
	//Then we need to get root item entry for the desired page (we'll create it if needed)
	PDFXEdit.IPXV_ContentItemEntry itEntry = itSel.GetSel(nPage, true);
	//Inserting needed content items from the page
	var content = Doc.CoreDoc.Pages[nPage].GetContent(PDFXEdit.PXC_ContentAccessMode.CAccessMode_Readonly);
	if (GetFirstImageOnPage(content, ref itEntry) == false)
		return;
	//Adding selected page's root entry with added image content item to the operation
	options["Entry"].v = itEntry; //If it's used in pair with the op.document.extractImage the original IPXV_ContentItemEntry should be used
	//Input image file
	PDFXEdit.IAFS_Inst fsInst = (PDFXEdit.IAFS_Inst)pdfCtl.Inst.GetExtension("AFS");
	PDFXEdit.IAFS_Name name = fsInst.DefaultFileSys.StringToName(@"D:\TestImage_res.png");
	//Src can be of the next types: IAFS_File, IAFS_Name, IString, IStream, IIXC_Image, IIXC_Page
	options["Src"].v = name;
	//First page of the image (in case of multipage images)
	options["SrcFrameIndex"].v = 0;
	//Setting whether the reversed matrix should be used for correct image resulting appearance
	//If the image was extracted visually then the UseReverseMatrix = true must be supplied for the reverse op.document.replaceImage operation
	options["UseReverseMatrix"].v = false;
	//Replacing image content item
	Op.Do();
	//Clearing the selection
	itSel.Clear();
}

private void ExportImage(PDFXEdit.IPXV_Document Doc, PDFXEdit.IPXV_Inst Inst)
{
	int nID = Inst.Str2ID("op.document.extractImage", false);
	PDFXEdit.IOperation Op = Inst.CreateOp(nID);
	var input = Op.Params.Root["Input"];
	input.Add().v = Doc.CoreDoc;
	PDFXEdit.ICabNode options = Op.Params.Root["Options"];
	int nSelID = Inst.Str2ID("selection.contentItems", false);
	uint nPage = 0; //Page number that will have it's image content item exported
	//First we need to create content items selection
	PDFXEdit.IPXV_ContentItemsSelection itSel = (PDFXEdit.IPXV_ContentItemsSelection)Doc.CreateStdSel((uint)nSelID);
	//Then we need to get root item entry for the desired page (we'll create it if needed)
	PDFXEdit.IPXV_ContentItemEntry itEntry = itSel.GetSel(nPage, true);
	//Inserting needed content items from the page
	var content = Doc.CoreDoc.Pages[nPage].GetContent(PDFXEdit.PXC_ContentAccessMode.CAccessMode_Readonly);
	if (GetFirstImageOnPage(content, ref itEntry) == false)
		return;
	//Adding selected page's root entry with added image content item to the operation
	options["Entry"].v = itEntry;
	//Setting resulting png file name
	options["FileName"].v = @"D:\TestImage_res.png";
	//Setting whether the image should be extracted visually or as it is in the PDF content
	//If the image was extracted visually then the UseReverseMatrix = true must be supplied for the reverse op.document.replaceImage operation
	options["ExtractVisually"].v = false;
	//Extracting image content item
	Op.Do();
	//Clearing the selection
	itSel.Clear();
}