[Windows Desktop] Mouse events at coordinates (0, 0) are captured when cursor leaves the window. #100213
Description
Weird issue on a Windows Desktop flutter app where a widget that covers the topleft pixel (0, 0) of the Window will receive hover events when the cursor leaves the window.
Steps to reproduce
Create a widget that supports mouse hover events on the top left of the Window, and leave the window anywhere (away from the widget). Said widget should receive a mouse hover event.
Example code:
runApp(
Column(
children: [
Expanded(
child: Container(
color: Colors.red,
child: MouseRegion(
onHover: (event) {
print('I capture events when the cursor leaves the window anywhere');
},
),
),
),
Expanded(
child: Container(
color: Colors.green,
child: MouseRegion(
onHover: (event) {
print('I am fine');
},
),
),
),
],
),
);
Flutter doctor output:
[✓] Flutter (Channel stable, 2.10.3, on Microsoft Windows [version 10.0.19044.1586], locale fr-FR)
• Flutter version 2.10.3 at C:\flutter
• Upstream repository https://github.com/flutter/flutter
• Framework revision 7e9793dee1 (2 weeks ago), 2022-03-02 11:23:12 -0600
• Engine revision bd539267b4
• Dart version 2.16.1
• DevTools version 2.9.2
[!] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
• Android SDK at C:\Users\jvannier\AppData\Local\Android\sdk
✗ cmdline-tools component is missing
Run `path/to/sdkmanager --install "cmdline-tools;latest"`
See https://developer.android.com/studio/command-line for more details.
✗ Android license status unknown.
Run `flutter doctor --android-licenses` to accept the SDK licenses.
See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[✓] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[✓] Visual Studio - develop for Windows (Visual Studio Community 2019 16.11.7)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
• Visual Studio Community 2019 version 16.11.31911.196
• Windows 10 SDK version 10.0.19041.0
[✓] Android Studio (version 2020.3)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
[✓] IntelliJ IDEA Community Edition (version 2021.3)
• IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2021.2.3
• Flutter plugin version 65.2.4
• Dart plugin version 213.7227
[✓] VS Code (version 1.65.1)
• VS Code at C:\Users\jvannier\AppData\Local\Programs\Microsoft VS Code
• Flutter extension can be installed from:
🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[✓] Connected device (3 available)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [version 10.0.19044.1586]
• Chrome (web) • chrome • web-javascript • Google Chrome 97.0.4692.71
• Edge (web) • edge • web-javascript • Microsoft Edge 99.0.1150.39
[✓] HTTP Host Availability
• All required HTTP hosts are available
! Doctor found issues in 1 category.