https://github.com/loic-sharma/flutter_windows_c
Demo app that uses Flutter Window's C APIs
https://github.com/loic-sharma/flutter_windows_c
Last synced: 2 months ago
JSON representation
Demo app that uses Flutter Window's C APIs
- Host: GitHub
- URL: https://github.com/loic-sharma/flutter_windows_c
- Owner: loic-sharma
- Created: 2023-12-04T18:21:32.000Z (over 1 year ago)
- Default Branch: main
- Last Pushed: 2024-03-21T18:42:48.000Z (about 1 year ago)
- Last Synced: 2025-02-02T12:48:17.835Z (4 months ago)
- Language: C++
- Size: 41 KB
- Stars: 1
- Watchers: 3
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# Flutter Windows C API
Flutter Windows apps interact with Flutter using a C++ API. However, this C++
API is actually a wrapper built on top of Flutter Window's C API. This sample
shows how to use Flutter Window's C API directly.
Noteworthy files:
1. `windows/runner/main.cpp`
2. `windows/runner/flutter_window.h`
3. `windows/runner/flutter_window.cpp`
### Background
C++ does not have a stable ABI and two libraries built separately might
not interoperate. Flutter Windows avoids this problem by exposing
a low-level C API.
When you build your app, the Flutter tool injects C++ source code into the app's
`flutter/ephemeral/cpp_client_wrapper` directory. This injected code "wraps"
Flutter Window's C API and provides nicer C++ abstractions.
Here's pseudocode showing the C API:
```cpp
FlutterDesktopEngineProperties engine_properties = {};
// Create the engine.
auto engine = FlutterDesktopEngineCreate(&engine_properties);
// Create a view controller. The view controller takes ownership of the engine.
auto controller = FlutterDesktopViewControllerCreate(width, height, engine);
// Run app...
// Destroy the view controller. This also destroys the engine.
FlutterDesktopViewControllerDestroy(controller);
```
Here's pseudocode showing the C++ API:
```cpp
// Create a view controller. This also creates an engine.
flutter::DartProject project{L"data"};
flutter::FlutterViewController controller{width, height, &project};
// Run app...
```