此示例通过ActiveX.exe部件执行耗时长的大任务，主窗体可以拖动和任意改变大小以及最大化、最小化、终止任务（关闭窗体）等。 -This example by ActiveX. Components perform time-consuming task, the main form can drag and arbitrarily change the size as well as maximize, minimize, and terminate the task (closed form).