在我的MFC(功能包)应用程序可以动态地创建对接窗格来显示图表/表等等,点击 但是,我不想让用户打开同样的事情两次。

我创建这样的窗格:

// Create CMyDockablePane pPane
pPane->Create(...);
pPane->EnableDocking(CBRS_ALIGN_ANY);
// Create CRect rcPane
pPane->FloatPane(rcPane);

这似乎很好地工作。

这是我想检查是否窗格中已经存在。甲窗格由它的类型(类)和一个参数标识。

BOOL CanOpenPane(const type_info & paneType, const CMyParameter & parameter) const
{
    CMainFrame* pFrm = GetMainFrame();
    CDockingManager* pDockMan = pFrm->GetDockingManager();


    // Check if there already is a pane of the same type which also has the same parameter.
    bool canOpen = true;
    CObList panes;
    pDockMan->GetPaneList(panes);
    POSITION pos = panes.GetHeadPosition();
    while (pos)
    {
        CMyDockablePane* pPane = dynamic_cast<CMyDockablePane*>(panes.GetNext(pos));
        if (NULL == pPane) { continue; }

        if (paneType == typeid(*pPane) &&
                pPane->GetParameter() == parameter)
        {
            canOpen = false;
            break;
        }
    }


    return canOpen;
}

这样做的问题是,当关闭一个窗格中,这个不被识别。所述CDockingManager对象仍返回窗格中GetPanes()调用。

<击>我怎么能告诉经理来无回被关闭的窗格?点击 结果 我如何从一个窗格列表,在关闭时删除窗格?


更新

我潜深一点,并发现,CWnd的对象实际上并没有关闭,点击标题栏的“X”按钮时,但只有它们的容器。点击 所以,真正的问题似乎是真的关闭窗格。结果 我也改变的问题以更好地反映该问题。

有帮助吗?

解决方案

正如我在更新中描述,在对接经理给我的问题关闭的窗格,是窗格实际上没有关闭。只有自己的集装箱被关闭;窗格自己只是隐藏。

因此,为了确实关闭窗格我推翻在我CMDIFrameWndEx下列方法衍生的主框架类:

BOOL CMainFrame::OnCloseMiniFrame(CPaneFrameWnd* pWnd)
{
    if(0 == pWnd->GetPaneCount()) { return TRUE; } // No panes.. allow closing

    // Close all child panes of the miniframe that is about to be closed.
    //
    // Panes are placed inside a mini frame when they have the "floating" status.
    // Since I didn't find a way to iterate over the panes of a mini frame
    // (CMultiPaneFrameWnd can have several panes), we iterate over all panes
    // and close those whose parent frame is pWnd.

    CDockingManager* pDockMan = GetDockingManager();
    if(NULL != pDockMan)
    {
        CObList allPanes;
        pDockMan->GetPaneList(allPanes, TRUE, NULL, TRUE);

        for(POSITION pos = allPanes.GetHeadPosition(); pos != NULL;)
        {
            CDockablePane* pPane = dynamic_cast<CDockablePane*>(allPanes.GetNext(pos));
            if (NULL == pPane) { continue; }

            if(pWnd == pPane->GetParentMiniFrame())
            {
                pPane->PostMessage(WM_CLOSE); // Note: Post instead of Send
            }
        }

    }

    return TRUE; // Allow closing
}

和第二:

BOOL CMainFrame::OnCloseDockingPane(CDockablePane* pWnd)
{
    CObList paneList;

    // We can get CDockablePanes and CTabbedPanes here.
    // The tabbed panes contain dockable panes.
    CTabbedPane* pTabbed = dynamic_cast<CTabbedPane*>(pWnd);
    CDockablePane* pDockable = dynamic_cast<CDockablePane*>(pWnd);
    if(NULL != pTabbed)
    {
        pTabbed->GetPaneList(paneList);
    }
    else if(NULL != pDockable)
    {
        paneList.InsertAfter(paneList.GetHeadPosition(), pDockable);
    }

    // Whatever it was, we now have a list of dockable panes, which we will close.
    for(POSITION pos = paneList.GetHeadPosition(); NULL != pos;)
    {
        CDockablePane* pPane = dynamic_cast<CDockablePane*>(paneList.GetNext(pos));
        ASSERT(NULL != pPane);


        // Let the window disappear and then recalculate the layout.
        // Not doing this causes problems with panes grouped together in a tabbed pane.
        pPane->ShowWindow(SW_HIDE);
        RecalcLayout();

        // Really close the window so the docking manager also doesn't know of it anymore.
        pPane->Reset();
        pPane->PostMessage(WM_CLOSE); // Note: Post instead of Send
    }


    return TRUE; // Allow closing
}

其他提示

添加到产油虽CMainFram如下所示的MSG项:

ON_REGISTERED_MESSAGE(AFX_WM_ON_PRESS_CLOSE_BUTTON,OnClosePane)

OnClosePane看起来像这样:

LRESULT CMainFrame::OnClosePane(WPARAM,LPARAM lp)
{
    CBasePane* pane = (CBasePane*)lp;
    int id = pane->GetDlgCtrlID();
    pane->ShowPane(FALSE, FALSE, FALSE);
    RemovePaneFromDockManager(pane,TRUE,TRUE,TRUE,NULL);
    AdjustDockingLayout();
    pane->PostMessage(WM_CLOSE);
    PostMessage(WM_RESETMEMBER,id,0);
    return (LRESULT)TRUE;//prevent close , we already close it
}

COUTION:

OnClosePane被称为在CBasePane的中间:: OnLButtonDown中的处理程序,破坏窗口 将会使你的代码断言,所以你需要张贴消息(WM_CLOSE),而不是将其发送,这给CBasePane :: OnLButtonDown中的处理程序有机会完成执行,而面板的hWnd仍然有效。 出于同样的resone我返回TRUE以防止接近,因为我们已经通过关闭 WM_CLOSE这将破坏窗口也是如此。

WM_RESETMEMBER消息被注册的窗口消息来重置窗格构件为空。

它实施看起来像这样:

LRESULT CMainFrame::OnResetMember(WPARAM wp,LPARAM)
{
    int id = (int)wp;
    switch(id)
    {
        case IDC_BIDBOND_TREE_PANE:
            m_pBBTreePane.reset((BBTreePane*)NULL);
            break;
        case IDC_REFTREE_PANE :
            m_pRefTreePane.reset((RefTreePane*)NULL);
            break;
        default :
            return (LRESULT)FALSE;//id warent found

    }
    return (LRESULT)TRUE;
}

您应该味精映射条目像一个:

ON_REGISTERED_MESSAGE(WM_RESETMEMBER,OnResetMember)

和要注册消息全局这样的:

const UINT WM_RESETMEMBER = ::RegisterWindowMessage(_T("WM_RESETMEMBER"));

我期望调用 CDockingManager :: RemovePaneFromDockManager 当你关闭你的窗格来完成这项工作。

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