Chilkat v11.6.0 / v11.6.1 Release Notes
See Release Notes for Versions 11.6.0 and 11.6.1
Chilkat v11.5.0 Release Notes
✨ New Features HttpCurl A new Chilkat class has been added: HttpCurl The Chilkat.HttpCurl class executes curl commands and can automatically resolve dependent values needed by a request. Variables such as {{access_token}}, {{site_id}}, or {{drive_id}} may appear in URLs, headers, query parameters, or request bodies. If a variable is not yet known, HttpCurl builds […]
Chilkat v11.4.0 Release Notes
✨ New Features Js A new Chilkat class has been added: Js is a minimal, standards-compliant JavaScript engine designed to embed JavaScript inside applications with very small footprint and fast startup. It executes JavaScript code inside an application without requiring a browser or large runtime. See About the Chilkat.Js JavaScript Engine Ai Provider — […]
C++ Zip Example to Append In-Memory Binary and String Data
v9.4.1.7 (pre-release) Fixed Zip DeleteEntry problem.
Fixed Zip DeleteEntry problem.
Unzipping zips with Unicode Filenames
Question: I see your example code includes the ability to create a zip with Unicode filenames. Does your product support unzipping files with unicode filenames, such as Chinese? Answer: Yes, it can unzip files w/ Unicode names — assuming the .zip was correctly created. Your first test should be to unzip without trying anything differently. […]
(IOS/IPhone) Setting Zip.TempDir to the Documents Directory
The Chilkat Zip methods for writing a .zip will first write the zip to a temp file in the directory specified by the Zip.TempDir property, and then if successful, moved/renamed to the actual output file. The default value for zip.TempDir is “.” (the current working directory) and this is often a directory where it is […]
Verify / Test a Zip Archive
Question: I need an easy way to verify that a zip downloaded, i.e test it, preferably without actually unzipping it to a directory. I couldn’t find any method like that – the files are small enough in the zip I could probably unzip them into memory. Is that pretty much the only way to do […]
Delete Files from a Zip Archive
Question: “I’ve been trying out the ZIP package that you guys have and for the most part it’s great. I do however have a question about folder manipulation. What I would like to be able to do is individually remove files from the zip and if the directory is empty I would like to remove […]
How to Add Comment to a Zip Entry?
Question: How do I go about adding text to the entry.comment field while zipping individual files? Answer: After appending files via the AppendFiles (or other append methods), you’ll have a zip object with N entries, each of which is a reference to a file that will be zipped when WriteZip is called (or WriteZipAndClose, or […]
Zip DecryptPassword and EncryptPassword
Question: I’m confused about DecryptPassword and EncryptPassword. I want to encrypt the files I am emailing. I want the recipient to be required to enter a password when they try to open the zipped file. Do I EncryptPassword or DecryptPassword? Answer: Use DecryptPassword when using the Chilkat Zip component / library to open an encrypted […]
VB.NET to Extract a File from one Zip Archive and Append it to Another Zip Archive
The following VB.NET code copies the contents of the nutrition.xml file (found in xml1.zip) to another pre-existing .zip named xml2.zip: Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim zip1 As New Chilkat.Zip Dim success As Boolean success = zip1.UnlockComponent(“Anything for 30-day trial”) success = zip1.OpenZip(“xml1.zip”) Dim entry As Chilkat.ZipEntry entry […]
Zip Compress JPG?
Question: May I know that which Zip method in your component could give the best compression? We are trying to Zip some JPEG, and perhaps could reduce the size by half or more. Answer: The JPG file format is already a compressed format, so usually very little is gained in trying to compress it — […]