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1、CDockablePane的关闭见解:
MFC提供的Pane关闭可以再事件里面找到:
BOOL CMainFrame::OnCloseDockingPane(CDockablePane* pWnd) ;
注释:关闭停靠窗口事件,事实上是隐藏窗体,还是占用资源的
BOOL CMainFrame::OnCloseMiniFrame(CPaneFrameWnd* pWnd)
注释:关闭悬浮窗口事件,事实上液是隐藏窗体,还是占用资源的
因此,如果仅仅是重写这两个消息,没做什么处理,那么内存还是消不下去,经过调试CDockablePane源码,获知如下方式可以真正销毁关闭该Dock窗体:
//停靠窗体关闭
BOOL CMainFrame::OnCloseDockingPane(CDockablePane* pWnd)
{
//处理关闭事件
if(pWnd->IsKindOf(RUNTIME_CLASS(CTabbedPane))){ //多个窗口
CTabbedPane* tabpane = (CTabbedPane *)pWnd;
CMFCBaseTabCtrl* pTabWnd = tabpane->GetUnderlyingWindow();
int num = pTabWnd->GetActiveTab();
if(num >= 0){ //这里仅仅关闭活动的面板
CDockablePane* pBar = DYNAMIC_DOWNCAST(CDockablePane, pTabWnd->GetTabWnd(num));
if (pBar != NULL)
{
ASSERT_VALID(pBar);
//将关闭消息加入该DockPane队列,等待完成本函数后关闭
::PostMessageA(pBar->m_hWnd ,WM_CLOSE, 0 , 0);
}
}
}
else{ //单个窗口
CDockablePane* pane = (CDockablePane*)pWnd;
if(pane->IsKindOf(RUNTIME_CLASS(CDockablePane)) || pane->IsKindOf(RUNTIME_CLASS(CPane)) && !pane->IsKindOf(RUNTIME_CLASS(CMFCToolBar))){
//将关闭消息加入该DockPane队列,等待完成本函数后关闭
::PostMessageA(pane->m_hWnd ,WM_CLOSE, 0 , 0);
}
}
return TRUE;
}
//关闭悬浮窗体
BOOL CMainFrame::OnCloseMiniFrame(CPaneFrameWnd* pWnd)
{
//处理关闭事件
CWnd* pwnd = pWnd->GetPane();
if(pwnd->IsKindOf(RUNTIME_CLASS(CTabbedPane))){ //多个窗口
CTabbedPane* tabpane = (CTabbedPane *)pwnd;
CMFCBaseTabCtrl* pTabWnd = tabpane->GetUnderlyingWindow();
//关闭所有的面板
for(int i=0;i<pTabWnd->GetTabsNum();i++)
{
CDockablePane* pBar = DYNAMIC_DOWNCAST(CDockablePane, pTabWnd->GetTabWnd(i));
if (pBar != NULL)
{
ASSERT_VALID(pBar);