我希望我的 Dialog 在 OK 响应之外与我现有的视图进行通信(因此使用 apply 或类似的)。我认为消息是最好的方法。
我敢肯定这些天没有很多MFC问题,所以我希望有人能够提供帮助。
通过向导创建一个新项目,我添加了一个由视图生成的对话框(比如说一个 CPropertySheet)。
MyPropertiesSheet ps(_T("MyPropertiesSheet"));
if (ps.DoModal() == IDOK) {
// I don't care about this section
}
起初,我假设当我单击“应用”时,我可以向视图发送消息并让它做一些事情(因为它是在视图中生成的);但是,我不能将消息直接传递给视图。
从我使用的对话框中:
GetParent()->SendMessage(WM_BUTTON1, 0, 0);
我可以在 MainFrm(一个 CmainFrame)中捕获消息,它将启动指定的 Button1() 函数,但我无法使用相同的代码(如下)在视图中捕获消息。
BEGIN_MESSAGE_MAP(CMainFrame, CMDIFrameWndEx)
...
ON_MESSAGE(WM_BUTTON1, Button1)
END_MESSAGE_MAP()
这是有道理的,因为我猜 View 是 MainFrm 的子级,而 Dialog 属于 MainFrm,而不是 View。
Jeff Prosise 的My Programming Windows with MFC(第 2 版)使用自定义 OnCreate 通过手动创建来获取对 View 的引用,但我真的不想这样做,因为它看起来相当复杂。我相信我最终会以这种方式制造很多问题。默认的 OnCreate 似乎对我的视图没有明显的参考(例如,包括在内,但可以随意跳过)。
int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CMDIFrameWndEx::OnCreate(lpCreateStruct) == -1)
return -1;
BOOL bNameValid;
CMDITabInfo mdiTabParams;
mdiTabParams.m_style = CMFCTabCtrl::STYLE_3D_ONENOTE; // other styles available...
mdiTabParams.m_bActiveTabCloseButton = TRUE; // set to FALSE to place close button at right of tab area
mdiTabParams.m_bTabIcons = FALSE; // set to TRUE to enable document icons on MDI taba
mdiTabParams.m_bAutoColor = TRUE; // set to FALSE to disable auto-coloring of MDI tabs
mdiTabParams.m_bDocumentMenu = TRUE; // enable the document menu at the right edge of the tab area
EnableMDITabbedGroups(TRUE, mdiTabParams);
if (!m_wndMenuBar.Create(this))
{
TRACE0("Failed to create menubar\n");
return -1; // fail to create
}
m_wndMenuBar.SetPaneStyle(m_wndMenuBar.GetPaneStyle() | CBRS_SIZE_DYNAMIC | CBRS_TOOLTIPS | CBRS_FLYBY);
// prevent the menu bar from taking the focus on activation
CMFCPopupMenu::SetForceMenuFocus(FALSE);
if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP | CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
!m_wndToolBar.LoadToolBar(theApp.m_bHiColorIcons ? IDR_MAINFRAME_256 : IDR_MAINFRAME))
{
TRACE0("Failed to create toolbar\n");
return -1; // fail to create
}
CString strToolBarName;
bNameValid = strToolBarName.LoadString(IDS_TOOLBAR_STANDARD);
ASSERT(bNameValid);
m_wndToolBar.SetWindowText(strToolBarName);
CString strCustomize;
bNameValid = strCustomize.LoadString(IDS_TOOLBAR_CUSTOMIZE);
ASSERT(bNameValid);
m_wndToolBar.EnableCustomizeButton(TRUE, ID_VIEW_CUSTOMIZE, strCustomize);
// Allow user-defined toolbars operations:
InitUserToolbars(nullptr, uiFirstUserToolBarId, uiLastUserToolBarId);
if (!m_wndStatusBar.Create(this))
{
TRACE0("Failed to create status bar\n");
return -1; // fail to create
}
m_wndStatusBar.SetIndicators(indicators, sizeof(indicators)/sizeof(UINT));
// TODO: Delete these five lines if you don't want the toolbar and menubar to be dockable
m_wndMenuBar.EnableDocking(CBRS_ALIGN_ANY);
m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);
EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndMenuBar);
DockPane(&m_wndToolBar);
// enable Visual Studio 2005 style docking window behavior
CDockingManager::SetDockingMode(DT_SMART);
// enable Visual Studio 2005 style docking window auto-hide behavior
EnableAutoHidePanes(CBRS_ALIGN_ANY);
// Load menu item image (not placed on any standard toolbars):
CMFCToolBar::AddToolBarForImageCollection(IDR_MENU_IMAGES, theApp.m_bHiColorIcons ? IDB_MENU_IMAGES_24 : 0);
// create docking windows
if (!CreateDockingWindows())
{
TRACE0("Failed to create docking windows\n");
return -1;
}
m_wndFileView.EnableDocking(CBRS_ALIGN_ANY);
m_wndClassView.EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndFileView);
CDockablePane* pTabbedBar = nullptr;
m_wndClassView.AttachToTabWnd(&m_wndFileView, DM_SHOW, TRUE, &pTabbedBar);
m_wndOutput.EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndOutput);
m_wndProperties.EnableDocking(CBRS_ALIGN_ANY);
DockPane(&m_wndProperties);
// set the visual manager and style based on persisted value
OnApplicationLook(theApp.m_nAppLook);
// Enable enhanced windows management dialog
EnableWindowsDialog(ID_WINDOW_MANAGER, ID_WINDOW_MANAGER, TRUE);
// Enable toolbar and docking window menu replacement
EnablePaneMenu(TRUE, ID_VIEW_CUSTOMIZE, strCustomize, ID_VIEW_TOOLBAR);
// enable quick (Alt+drag) toolbar customization
CMFCToolBar::EnableQuickCustomization();
if (CMFCToolBar::GetUserImages() == nullptr)
{
// load user-defined toolbar images
if (m_UserImages.Load(_T(".\\UserImages.bmp")))
{
CMFCToolBar::SetUserImages(&m_UserImages);
}
}
// enable menu personalization (most-recently used commands)
// TODO: define your own basic commands, ensuring that each pulldown menu has at least one basic command.
CList<UINT, UINT> lstBasicCommands;
lstBasicCommands.AddTail(ID_FILE_NEW);
lstBasicCommands.AddTail(ID_FILE_OPEN);
lstBasicCommands.AddTail(ID_FILE_SAVE);
lstBasicCommands.AddTail(ID_FILE_PRINT);
lstBasicCommands.AddTail(ID_APP_EXIT);
lstBasicCommands.AddTail(ID_EDIT_CUT);
lstBasicCommands.AddTail(ID_EDIT_PASTE);
lstBasicCommands.AddTail(ID_EDIT_UNDO);
lstBasicCommands.AddTail(ID_APP_ABOUT);
lstBasicCommands.AddTail(ID_VIEW_STATUS_BAR);
lstBasicCommands.AddTail(ID_VIEW_TOOLBAR);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_OFF_2003);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_VS_2005);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_OFF_2007_BLUE);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_OFF_2007_SILVER);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_OFF_2007_BLACK);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_OFF_2007_AQUA);
lstBasicCommands.AddTail(ID_VIEW_APPLOOK_WINDOWS_7);
lstBasicCommands.AddTail(ID_SORTING_SORTALPHABETIC);
lstBasicCommands.AddTail(ID_SORTING_SORTBYTYPE);
lstBasicCommands.AddTail(ID_SORTING_SORTBYACCESS);
lstBasicCommands.AddTail(ID_SORTING_GROUPBYTYPE);
CMFCToolBar::SetBasicCommands(lstBasicCommands);
// Switch the order of document name and application name on the window title bar. This
// improves the usability of the taskbar because the document name is visible with the thumbnail.
ModifyStyle(0, FWS_PREFIXTITLE);
return 0;
}
我认为必须有一种方法可以从 MainFrm 获取我的视图。
我试过了:
auto pView = GetActiveView();
if (pView == NULL) {
std::string error = "Unable to get Active View\n";
TRACE(error.c_str());
}
else {
pView->SendMessage(WM_BUTTON1, 0, 0);
}
但这是返回 NULL (所以我不能用它来发送消息)。
我什至不确定我是否需要这个,但我对为什么这不起作用以及为什么我无法从 MainFrm 处理我的视图感兴趣。