在多文档中,怎么不能用GetActiveView来获得活动视图?

[kikiven]

在MDI的主窗口框架CMainFrame中我想获得当前活动的子窗口CChildFrame所用的视图对象指针,好像直接用GetActiveView不行,请哪位大哥告诉我一下啊

[kikiven]

哎,没分真的就没人回啊,
这....这....这世道.......算了,换个论坛吧

[matiao]

the following content from MSDN:

This function returns NULL when called for an MDI main frame window (CMDIFrameWnd). In an MDI application, the MDI main frame window does not have a view associated with it. Instead, each individual child window (CMDIChildWnd) has one or more associated views. The active view in an MDI application can be obtained by first finding the active MDI child window and then finding the active view for that child window. The active MDI child window can be found by calling the function MDIGetActive or GetActiveFrame as demonstrated in the following:

CMDIFrameWnd *pFrame =
(CMDIFrameWnd*)AfxGetApp()->m_pMainWnd;

// Get the active MDI child window.
CMDIChildWnd *pChild =
(CMDIChildWnd *) pFrame->GetActiveFrame();

// or CMDIChildWnd *pChild = pFrame->MDIGetActive();

// Get the active view attached to the active MDI child
// window.
CMyView *pView = (CMyView *) pChild->GetActiveView();

[nuaawenlin]

this->GetActiveView();