遷移先画面が閉じるときに発生するイベントです。
Declaration Syntax| C# | Visual Basic | Visual C++ |
public event ForwardableFormCloseEventHandler FormClosing
Public Event FormClosing As ForwardableFormCloseEventHandler
public: event ForwardableFormCloseEventHandler^ FormClosing { void add (ForwardableFormCloseEventHandler^ value); void remove (ForwardableFormCloseEventHandler^ value); }