When the mouse cursor goes outside the canvas element, press, release and position data is not coming.
贡献者指南
技术栈
ccppwasm
领域
frontend
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
C++ basicsWebAssembly conceptsGLFW library basics
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
50
研究方向
First, examine the GLFW implementation in Emscripten's source code, likely in system/include/emscripten/glfw.h or similar, to understand how mouse events are currently handled. Then, investigate the browser's Pointer Events API and the use of setPointerCapture to capture mouse events outside the canvas. Check existing discussions or linked issues for any known solutions. Finally, propose adding pointer capture logic to the GLFW mouse event handling when the cursor leaves the canvas.
GLFW3 cannot get mouse event out of canvas · emscripten-core/emscripten#22449 | Good First Issue
