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slint/api/cpp/docs/live_preview.md
Simon Hausmann 58391c903d cmake: Add the live-preview feature to the C++ docs 
So that it can be linked to from the blog post :)
2025-08-29 14:42:00 +02:00

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Live-Preview

.slint files are compiled to C++ code when using the slint_target_sources() function. This is the default and recommended for release builds.

During debugging and development, changes to .slint files requires re-compiling and re-starting the application. To speed up modifications to the UI while connected to the applications' business logic, you can opt into enabling Live-Preview for C++:

  1. Compile Slint from sources. At the configure step, enable the SLINT_FEATURE_LIVE_PREVIEW cmake option.
  2. When compiling your application, set the SLINT_LIVE_PREVIEW=1 environment variable.
  3. Start you application. The Slint run-time library will load and reload .slint files after you've modified them on disk.