Unit: Lazarus lclintf
function OpenDocument(APath: String): Boolean;
Official documentation: OpenDocument
OpenDocument opens a document/file with the default viewer/editor registered with the operating system for that file/file extension.
- On macOS, the code calls the open command line utility for files and directories. This will open the default application for the file or directory as determined by LaunchServices.
- On Windows, the code will use the registry to look up the file association for the extension. As with macOS, it will also open directories.
On both macOS and Windows,
OpenDocument will also open a URL using the default web browser.
uses LCLIntf; begin OpenDocument('readme.pdf');