Chilkat v11.3.0 Release Notes

✨ New Features

Ai

• Real-Time Streaming AI Responses to Embedded Browsers in Desktop Apps — Stream AI responses to JavaScript function calls that update the browser in real-time as responses arrive. See AI Real Time UI Streaming
• Custom and Local Providers — Setting the Provider property to custom enables the BaseUrl and ApiSpec properties. The ApiSpec defines the API, with possible values such as "ChatCompletions" and "Responses".
• ApiKeyHeader — The ApiKeyHeader property lets you define the HTTP header field for the API key required by custom providers, such as "x-api-key".
• SetAskParams — The SetAskParams method allows you to set additional Ask parameters like temperature, effort, and max_output_tokens.
• SetProviderParams — The SetProviderParams method sets additional provider params needed for some pre-defined providers, such as azure.

Csv

• Load .xlsx to CSV — Excel .xlsx spreadsheets can be loaded into the Csv object using the new XlsxLoadSheet method. There is also a new XlsxGetSheets method to get the names of the sheets contained in the spreadsheet.

StringBuilder

• MarkdownToHtml — Added the "emitJavascript": true option to emit Javascript function calls instead of HTML. See Real-Time Streaming AI Responses to Embedded Browsers in Desktop Apps
• MarkdownToHtml — Added the "streamingShell": true option to construct an HTML shell for streaming Javascript function calls. See Preparing the HTML Shell for Streaming AI Responses
• MarkdownToHtml — Added additional options for pre-defined themes and customizing styles, including theme, usesPrism, prism.theme, prism.version, docType, rootElement, head, bodyStart, bodyEnd, and others. See the online reference documentation.

(IMAP) MessageSet

• Subtract — Added the MessageSet.Subtract method to subtract one message set from another. This helps track which server messages haven’t been downloaded yet.

StringTable

• ToSb — Added the ToSb method.

PHP

• PHP 8.5 Support — Added downloads for PHP 8.5.

🛠 Fixes & Improvements

Email

• AddFileAttachment — A problem that started in v11.2.0 was fixed. Chilkat’s internal and automatic file extension to MIME Content-Type logic was outdated (because Chilkat has been in existence for over 20 years. This was updated and a bug was introduced that caused the mapping to be invalid.

StringBuilder

• MarkdownToHtml — Improved markdown to HTML conversion.

Pdf

• UpdateMetadataBd — Fixed. The output bd argument was always 0 bytes.

Secrets

• If the service name = "Chilkat" and the username = "unlock_code" then it can be saved and retrieve from the secrets store while Chilkat is still unlocked. This allows for the Chilkat unlock code itself to be stored as a secret.

SFtpFile

• In the ActiveX build, the following properties were accidentally omitted in recent versions: CreateTime, LastAccessTime, and LastModifiedTime. These properties were added back into the ActiveX

📄 Additional Notes

• Chilkat will be releasing 11.3.0 libs for Visual Studio 2026 and some additional MinGW-w64 versions.