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- MFC APPLICATION WIZARD MULTIPLE TOP LEVEL DOCUMENTS CODE
- MFC APPLICATION WIZARD MULTIPLE TOP LEVEL DOCUMENTS WINDOWS
This capability is handy to have when the framework creates your application's main window for you, as is frequently the case in document/view applications, but it's not necessary when your code calls Create directly and therefore controls the parameters passed to it. WS_SYSMENU ¦ WS_MINIMIZEBOX ¦ WS_THICKFRAME) Īn alternative way to specify a window style is to override the virtual PreCreateWindow function that a window inherits from CWnd and modify the style field of the CREATESTRUCT structure passed to PreCreateWindow. WS_OVERLAPPEDWINDOW combines the WS_OVERLAPPED, WS_CAPTION, WS_SYSMENU, WS_MINIMIZEBOX, WS_MAXIMIZEBOX, and WS_THICKFRAME styles, so if you'd like to create a window that looks just like a WS_OVERLAPPEDWINDOW window but lacks the maximize button in the title bar, you could call Create this way:Ĭreate (NULL, _T ("Hello"), WS_OVERLAPPED ¦ WS_CAPTION ¦ As this example illustrates, multiple styles may be combined using the C++ ¦ operator.
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The statementĬreate (NULL, _T ("Hello"), WS_OVERLAPPEDWINDOW ¦ WS_VSCROLL) Ĭreates an overlapped window that contains a vertical scroll bar.
MFC APPLICATION WIZARD MULTIPLE TOP LEVEL DOCUMENTS WINDOWS
Two of the styles frequently used with frame windows are WS_HSCROLL and WS_VSCROLL, which add horizontal and vertical scroll bars to the bottom and right edges of the window's client area. You'll find a complete list of window styles in the documentation for CFrameWnd::Create. You can change the window style by specifying an alternative style or combination of styles in the call to Create. The dwStyle parameter specifies the window style. The lpszWindowName parameter specifies the text that will appear in the window's title bar. Specifying NULL for this parameter creates a default frame window based on a WNDCLASS registered by the framework.
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The first parameter- lpszClassName-specifies the name of the WNDCLASS that the window is based on. Hello does the minimum amount of work required, specifying values for the function's first two parameters and accepting the defaults for the remaining six. CFrameWnd::Create is prototyped as follows:ĭefault values are defined for six of the eight parameters Create accepts. It's one of approximately 20 member functions that CFrameWnd defines in addition to the functions it inherits from CWnd. Create is a CMainWindow member function that's inherited from CFrameWnd. _T is a macro that's used to make string literals character set neutral. CMainWindow's constructor creates the window you see on the screen:Ĭreate (NULL, _T ("The Hello Application")) Hello creates a CMainWindow object in CMyApp::InitInstance. In the greater context of the document/view architecture, frame windows play a larger role as intelligent containers for views, toolbars, status bars, and other user-interface (UI) objects.Īn MFC application creates a window by creating a window object and calling its Create or CreateEx function. For now, you can think of a frame window as a top-level window that serves as an application's primary interface to the outside world. CFrameWnd models the behavior of frame windows. Hello's window class, CMainWindow, is derived from MFC's CFrameWnd class, which is derived from CWnd. Of course, those documents are the same kind.MFC's CWnd class and its derivatives provide object-oriented interfaces to the window or windows an application creates. M_pHistTemplate = new CMultiDocTemplate(IDR_OpenCVTestTYPE,īut when I start the application, it keeps asking which document among two documents user wants to choose. RUNTIME_CLASS(CChildFrame), // custom MDI child frame In order to do that, InitInstance of my App class has following code m_pMainTemplate = new CMultiDocTemplate(IDR_OpenCVTestTYPE,
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I would like to have multiple views for a document in my MDI MFC application.