关于窗体的释放？(100分)

用Form.Free和在onClose中设置action:=caFree的效果是否一样？<br>我查看了源码，前者调用了destroy，前者调用了release<br>窗体关闭时的事件调用顺序是：close,release,destory，对吗？<br>procedure TCustomForm.Release;<br>begin<br>&nbsp; PostMessage(Handle, CM_RELEASE, 0, 0);<br>end;<br><br>destructor TCustomForm.Destroy;<br>begin<br>&nbsp; if not (csDestroying in ComponentState) then GlobalNameSpace.BeginWrite;<br>&nbsp; try<br>&nbsp; &nbsp; if OldCreateOrder then DoDestroy;<br>&nbsp; &nbsp; MergeMenu(False);<br>&nbsp; &nbsp; if HandleAllocated then DestroyWindowHandle;<br>&nbsp; &nbsp; Screen.RemoveForm(Self);<br>&nbsp; &nbsp; FCanvas.Free;<br>&nbsp; &nbsp; FIcon.Free;<br>&nbsp; &nbsp; FreeAndNil(FActionLists);<br>&nbsp; &nbsp; inherited Destroy;<br>&nbsp; finally<br>&nbsp; &nbsp; GlobalNameSpace.EndWrite;<br>&nbsp; end;<br>end;<br>release和destroy有什么不同？<br><br>

if not assigned(frmLock) then begin<br>&nbsp; &nbsp;frmLock := TfrmLock.Create(self);

标准方式： <br>&nbsp; if not assigned(frmstat) then<br>&nbsp; &nbsp; &nbsp; frmstat:=Tfrmstat.create(application);<br><br>&nbsp; &nbsp;frmstat.showmodal;<br>&nbsp; &nbsp;frmstat.free;<br>&nbsp; &nbsp;frmstat:=nil;

用Form.Free和在onClose中设置action:=caFree的效果是否一样？<br>窗体关闭时的事件调用顺序是：close,release,destory，对吗？<br>release和destroy有什么不同？<br><br><br><br>

Close：关闭而已，仅仅把此窗口隐含下来。<br>realse：它会等到FORM和FORM上的控件都完成了它们的事件后才Destory掉FORM<br>Destroy：将有FORM有关的内容从内存中移掉。

多人接受答案了。