Version 17.5  (7 May 2025 Released)

• added Advanced Barcode Recognition for PDF features, it can Open the PDF, Get the total count of images for specific PDF page and scan the Barcode for specific image. It can improved the barcode recognition. In old version cannot detected Barcode on PDF file. now it can solved it.
• added BarCodeReadPDFClose,  BarCodeReadPDFImageCount, BarCodeReadPDFOpen,  BarCodeReadPDFScan methods.
• fixed VB.NET 2010, 2019 BarCodeReader samples cannot open issue.
• updated C# 2010, C#2019, BarCodeReader samples.
• added VB6 BarCodeReader sample.

Version 17.0  (18 April 2025 Released)

• fixed crash issue when save to TIF or PDF file.
• added PDFExportText method. It can export specific PDF page text content to Unicode Text File , XML File or HTML File.
• In old version, It support load and enter data into PDF form fields for first page only. Now it support load multipage and enter data into PDF form fields for specific page.
• updated PDFFormFieldsUpdate method. It added iOutputPageNo parameter. It can export specific page or all pages of PDF.
• added Brightness, AntiNoise, Contrast, DeSaturation, Diffuse, Emboss, FocalBW, Gamma, Hue, Median, Monochrome, Mosaic, Noise, Saturation, Sharpen, SharpenEdge, Twirl methods.
• rename viscompdfreader,dll to viscompdfreader-imageviewer.dll. Now ImageViewer ActiveX x64 and PDF Viewer ActiveX or PDF Viewer ActiveX x64 can used in the same form.
• added VC 2010 Getting Started Tutorial.
• updated VB6, C#2010, C#2019, VB.NET 2010, VB.NET 2019 General and PDFFormFields samples. 

Version 16.0  (21 October 2024 Released)

• fixed memory leak when load PDF file.
• improved display PDF speed. it can display PDF faster, include Zoom In, Zoom Out speed now.
• added support load, edit (or Autofill PDF form fields ) and save PDF form fields data (need Advanced PDF Form and  Edit Module).
• added support AutoFill PDF form field objects such as text boxes, check boxes, list boxes, combo boxes and radio buttons.
• added PDFFormFieldsCount,  PDFFormFieldsName, PDFFormFieldsLabel,  PDFFormFieldsWidgetType,PDFFormFieldsText, PDFFormFieldsIsCheck, PDFFormFieldsWidgetType, PDFFormFieldsCboListBoxIndex methods to Extract the data from filled-in PDF form fields.
• added PDFFormFieldsSetText, PDFFormFieldsSetChecked, PDFFormFieldsSetCboListBoxIndex methods to AutoFill PDF form fields.
• added PDFFormFieldsUpdate method to update the screen or Saves filled forms to new PDF file.
• added VB6, VFP, C#2010, C#2019, VB.NET 2010, VB.NET 2019 PDFFormFields samples.

Version 15.5  (16 December 2023 Released)

• added Convert single page or multipage TIFF/PDF to Single or Multipage Docx file.
• added Mouse wheel event.you can change pages by scrolling mouse wheel or  zoom in or zoom out of page by scrolling mouse wheel. Let user navigate to page or zooming easily.
• added Middle Mouse button events. MMouseButtonDown, MMouseButtonUp, MMouseButtonDblClk events. e.g. When you double click Middle Mouse button, then you can Print the PDF.
• added GetCurrentPage, it will return current page number if you loaded multi-page PDF file.
• added DocxPDF2Docx, DocxTIFF2Docx methods. 
• added OnMouseWheel event.
• added SetControlFocus method, let the control received the OnMouseWheel event if the control lost the focus.
• updated C#2010, C#2019, VB.NET 2010, VB.NET 2019 Samples( change pages by scrolling mouse wheel).

Version 15.0  (26 May 2023 Released)

• added PDFWriter features, you can create a PDF from scratch, create a new page to the document, add text, add image, add line, add rectangle, add Ellipse to document.Use this new features you can generate PDF Invoice, PDF Receipt, PDF Quotation, PDF Report etc. PDFWriter features included in Advanced PDF Edit plugin. Please see this screenshot http://www.viscomsoft.com/doc/create-pdf-invoice.jpg
• improved draw transparent PNG quality in DrawImage method. Please see this screenshot http://www.viscomsoft.com/doc/compare-issue.jpg
• improved the convert speed of ConvertTo1bpp,  ConvertTo4bpp ,ConvertTo8bpp, ConvertTo8bppGrayScale , ConvertTo16bppRGB555, ConvertTo16bppRGB565, ConvertTo24bpp, ConvertTo32bpp , ConvertTo32bppARGB methods.
• added PDFWriterAddPage, PDFWriterCreatePDF, PDFWriterDrawText, PDFWriterDrawImage, PDFWriterDrawEllipse, PDFWriterDrawLine, PDFWriterDrawRectangle, PDFWriterClearAll methods.
• added MS Access 2016, C# 2010, C# 2019, VB6, VB.NET 2010, VB.NET 2019 PDFWriter Sample. This sample show you How to use PDFWriter features to generate PDF Invoice.

Version 14.5  (28 March 2023 Released)

• Fixed cannot load the Big Page (e.g. 84.25 x 60.04 or 10784x7684 page size) of PDF file, it will display blank page . http://www.viscomsoft.com/doc/BigPageSample.zip
• updated FileName, LoadMultiPage, PrintImage, PrintImage2Printer Rotate90, Rotate180, Rotate270, Rotate methods for load the BIG page of PDF file.
• added PrintCopies, PrintOrientation PrintScale properties ,it can set the number of copies, page orientation or  page scale to print programmatically.

Version 14.0  (10 October 2022 Released)

• updated PDF Viewer engine , fixed cannot display texts on some PDF version 1.6 or 1.7 files and some text fields cannot display in Fillable PDF file. It is Big Update.

Version 13.0  (24 February 2022 Released)

• updated PDF engine. fixed open some PDF files cannot display the text content and fixed show the incorrect margin.
• added Anti-Aliasing improvement for zoom in or zoom out PDF file or call View , Viewsize properties, e.g. opened PDF file, then zoom in repeatedly. now the image quality will clear and Anti-Aliasing.
• fixed inserted texts vertically flipped or mirror issue when use PDFEditAddWatermarkText1 and PDFEditAddWatermarkText2 methods.
• fixed inserted image vertically flipped or mirror issue when use PDFEditAddWatermarkImage methods.
• updated PDFEditDeletePage method , after deleted the page, it will reduce PDF file size.
• updated PDFEditSplit method , after split the PDF files.it will reduce the both PDF files size (In old version, if PDF file size is 100MB, after split PDF into two PDF files. The file size remain 100MB for Each PDF file.)
• updated PDFEditMergeEx method, It will reduces the size of a Merged PDF file for selected the start page and end page.
• updated PDFEditAddPage method, it will reduce the output PDF files size. The old verson will double the output PDF file size.
• added x64 profile for C# 2010, C# 2019 VB.NET 2010, VB.NET 2019 General and PDFEdit samples. The samples can compile in x64 mode.

Version 12.0  (14 January 2021 Released)

• added support read 1D and 2D barcodes in images if added Barcode reader plugin
• added support Merge PDF files with bookmarks, Cover any unwanted page content with opaque rectangles, Split a multi-page PDF File, Add the PDF File to specific position of existing PDF File, Delete Page, Rotating Page of PDF file and Crop specific part of PDF file if added Advanced PDF Edit Plug-in.
• added support save to PDF file.
• added BarCodeGetScore, BarCodeGetType, BarCodeGetValue, BarCodeReadByZone,BarCodeReadFullPage methods.
• added BarCodeReadCustomRotation, BarCodeReadScan45CouterRotation, BarCodeReadScan45Rotation, BarCodeReadScan90Rotation, BarCodeReadScanAccuracy, BarCodeReadScanMultiple, BarCodeReadScanWithoutRotation properties.
• PDFEditAddPage, PDFEditAddWatermarkImage, PDFEditAddWatermarkLines, PDFEditAddWatermarkText1, PDFEditAddWatermarkText2, PDFEditCrop, PDFEditEncrypt, PDFEditDeletePage, PDFEditGetFileInfo, PDFEditImageExtract, PDFEditMasking, PDFEditMerge, PDFEditMergeEx, PDFEditMergeWithBookmarks, PDFEditRotate, PDFEditSplit methods.
• added VB6, C# 2010, C#2019, VB.NET 2010, VB.NET 2019 samples.

Version 11.0  (19 July 2019 Released)

• added support view PDF file. Now the LoadMultiPage method support load PDF file.
• added PDFUserPassword property. support open password protected PDF file.
• updated VB6, C# 2015, VB 2015, MS Access 2016, VFP samples.

Version 10.0  (16 May 2017 Released)

• added the SDK ActiveX supported on both x86 and x64 architectures.
• fixed color issue when loading Raw image (cr2, nef , crw, mrw, raf, erf, 3fr, dcr, raw, dng, pef,  x3f, arw, sr2, mef, prf)
• added MS Access 2016 64bit samples.
• added C# 2015, VB.NET 2015 x64 samples.