上下文大小写帮助范例

使用 QHelpEngineCore class to implement context-sensitive help for applications.

文件：

• contextsensitivehelp/contextsensitivehelp.pro
• contextsensitivehelp/docs/wateringmachine.qhcp
• contextsensitivehelp/docs/wateringmachine.qhp
• contextsensitivehelp/helpbrowser.cpp
• contextsensitivehelp/helpbrowser.h
• contextsensitivehelp/main.cpp
• contextsensitivehelp/wateringconfigdialog.cpp
• contextsensitivehelp/wateringconfigdialog.h
• contextsensitivehelp/wateringconfigdialog.ui