The GetParent function retrieves a handle to the specified window's parent or owner.
To retrieve a handle to a specified ancestor, use theGetAncestorfunction.
//该函数返回的是指定子窗口的父窗口的句柄,其中,参数hWnd为子窗口的句柄
Syntax
HWND GetParent( HWND hWnd);
Parameters
hWnd[in] Handle to the window whose parent window handle is to be retrieved.
举个例子来说:你在对话框中添加了一个Edit的控件,通过GetDlgItem( int ID)你能获得该控件的句柄,如果你想获得该对话框的句柄,就能以GetParent( GetDlgItem(ID))来实现,也就是说,获得的是子窗口所在的父窗口的句柄。