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component/catch_event: improve the example for CatchEvent() (#351)

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before this change, the example in the doxygen document for CatchEvent()
does not use the documented function. hence the example is not that
useful for developers interested in a typical usage of this function.

after this change, the example is improved to added the call to
CatchEvent(), which allows the application to the Loop() function at
user input.

Signed-off-by: Kefu Chai <tchaikov@gmail.com>
This commit is contained in:
Kefu Chai 2022-03-04 20:23:31 +08:00 committed by GitHub
parent 9dbc23a7d4
commit a254e36632
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1 changed files with 8 additions and 1 deletions
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9
src/ftxui/component/catch_event.cpp
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@ -39,7 +39,14 @@ class CatchEventBase : public ComponentBase {
/// auto renderer = Renderer([] { /// auto renderer = Renderer([] {
/// return text("My interface"); /// return text("My interface");
/// }); /// });
/// screen.Loop(renderer); /// auto component = CatchEvent(renderer, [&](Event event) {
/// if (event == Event::Character('q')) {
/// screen.ExitLoopClosure()();
/// return true;
/// }
/// return false;
/// });
/// screen.Loop(component);
/// ``` /// ```
Component CatchEvent(Component child, Component CatchEvent(Component child,
std::function<bool(Event event)> on_event) { std::function<bool(Event event)> on_event) {