qt_gui/
impl_q_gui_application.rs

1use crate::QGuiApplication;
2use qt_core::QCoreApplicationArgs;
3use std::process;
4
5impl QGuiApplication {
6    /// A convenience function for performing proper initialization and de-initialization of
7    /// a Qt application.
8    ///
9    /// This function creates a `QGuiApplication` object with valid `argc` and `argv`,
10    /// calls the passed closure `f(app)` with the application object
11    /// and exits the process with the exit code returned by the closure.
12    /// The closure should perform the initialization of the application
13    /// and either return immediately or call `QGuiApplication::exec()`
14    /// and return its return value:
15    /// ```no_run
16    /// use qt_gui::QGuiApplication;
17    ///
18    /// fn main() {
19    ///     QGuiApplication::init(|app| {
20    ///         unsafe {
21    ///             // initialization goes here
22    ///             QGuiApplication::exec()
23    ///         }
24    ///     })
25    /// }
26    /// ```
27    pub fn init<F: FnOnce(::cpp_core::Ptr<QGuiApplication>) -> i32>(f: F) -> ! {
28        let exit_code = {
29            unsafe {
30                let mut args = QCoreApplicationArgs::new();
31                let (argc, argv) = args.get();
32                let app = QGuiApplication::new_2a(argc, argv);
33                f(app.as_ptr())
34            }
35        }; // drop `app` and `args`
36        process::exit(exit_code)
37    }
38}
qt_gui/impl_q_gui_application.rs

qt_gui/
impl_q_gui_application.rs
