Focus

focus，焦點

應用

.NET

Windows Forms

• Control.GotFocus Event (System.Windows.Forms) | Microsoft Docs
• Control.LostFocus Event (System.Windows.Forms) | Microsoft Docs

WPF

• 焦點概觀 - WPF .NET Framework | Microsoft Docs

Web

CSS

• :focus - CSS: Cascading Style Sheets | MDN
• :focus-visible - CSS: Cascading Style Sheets | MDN
• :focus-within - CSS: Cascading Style Sheets | MDN

HTML

• Element: focus event - Web APIs | MDN
• Element: blur event - Web APIs | MDN
• Element: focusin event - Web APIs | MDN
• Element: focusout event - Web APIs | MDN

jQuery

• .focus() | jQuery API Documentation
• .blur() | jQuery API Documentation
• .focusin() | jQuery API Documentation
• .focusout() | jQuery API Documentation

===Windows===https://doc.qt.io/qt-5/qfocusevent.html

MFC

• CWnd::SetFocus | Microsoft Docs
• CWnd::GetFocus | Microsoft Docs

Windows API

• SetFocus function (winuser.h) - Win32 apps | Microsoft Docs
• GetFocus function (winuser.h) - Win32 apps | Microsoft Docs
• WM_SETFOCUS message (Winuser.h) - Win32 apps | Microsoft Docs
• WM_KILLFOCUS message (Winuser.h) - Win32 apps | Microsoft Docs

其他

Qt

• QFocusEvent Class | Qt GUI 5
• Keyboard Focus in Widgets | Qt Widgets 5

相關

• 鍵盤（keyboard）