VC ++ MFC中的文档视图体系结构 [英] Document View Architecture in VC++ MFC

问题描述

大家好，我是文档视图架构这个概念的新手，所以请任何人帮我解决这个问题，请给出一些编程实例。谢谢你帮忙...

[更新]

任何人请帮帮我...

解决方案

我想 Google 不会帮助你： mfc文档视图架构教程 [ ^ ]。

http://msdn.microsoft.com/en-us /library/4x1xy43a%28v=vs.110%29.aspx [ ^ ]



肌酸g你的第一个MFC Doc / View应用程序 [ ^ ]



http://www.ucancode.net/Visual_C_MFC_Samples/Multiple-document-views-VC-MFC-Example.htm [ ^ ]

< blockquote>当我开始一个新项目时，我总是在SDI或Dialog之间进行选择，具体取决于我需要的界面布局。不要被文档/视图所左右，我创建了数百个项目，但从未使用过文档功能。生成SDI项目后，我要做的第一件事就是删除生成的CDocument代码。可以将其想象为框架窗口/视图与对话框。



如果你的界面需要是一个复杂的框架窗口，你已经内置了控制栏，你仍然有CFormView类（我使用分配）。如果您的项目是一个简单的实用程序，您可能会选择基于对话框的项目。



应用程序向导为您生成一个骨架项目，但作为极简主义者，我尝试删除所有不必要的代码。我将发布一个关于我用SDI项目做事的方式的例子，我希望它有所帮助。



以下是创建主窗口的另一种方法示例：

 // ============================================== === 
 //全局变量
 // ================================= ================ 
 CMainFrame * g_pMainFrame = NULL; 
 CString g_cstrWinClass（YourWindowClassName）; 
 
 
 BOOL CApp :: InitInstance（）
 {
 //如果应用程序
 // manifest指定使用，则Windows XP上需要InitCommonControls（） ComCtl32.dll版本6或更高版本启用
 //视觉样式。否则，任何窗口创建都将失败。 
 INITCOMMONCONTROLSEX iccx = {0}; 
 iccx.dwSize = sizeof（iccx）; 
 iccx.dwICC = ICC_STANDARD_CLASSES; 
 InitCommonControlsEx（& iccx）; 
 
 CWinApp :: InitInstance（）; 
 
 //创建一个窗口类
 WNDCLASS wc = {0}; 
 wc.style = CS_DBLCLKS | CS_GLOBALCLASS; 
 wc.lpfnWndProc = :: DefWindowProc; 
 wc.hInstance = AfxGetInstanceHandle（）; 
 wc.hIcon = AfxGetApp（） - > LoadIcon（IDR_MAINFRAME）; 
 wc.hCursor = AfxGetApp（） - > LoadStandardCursor（IDC_ARROW）; 
 wc.hbrBackground =（HBRUSH）GetStockObject（WHITE_BRUSH）; 
 wc.lpszClassName = g_cstrWinClass; 
 
 //注册窗口类
 if（！:: GetClassInfo（wc.hInstance，wc.lpszClassName，& wc））
 {
 if（！ :: RegisterClass（& wc））
 {
 TRACE（_T（窗口类无法注册\ n））; 
返回FALSE; 
} 
} 
 
 
 //创建主窗口
 g_pMainFrame = new CMainFrame; 
 m_pMainWnd = g_pMainFrame; 
 //调用CreateWindow（）
 DWORD dwStyle = WS_OVERLAPPEDWINDOW; 
 if（！g_pMainFrame-> Create（
 g_cstrWinClass，g_cstrWinName，
 dwStyle，CRect（0,0,1024,768），NULL，
 MAKEINTRESOURCE（IDR_MAINFRAME），NULL ））
返回FALSE; 
 g_pMainFrame-> CenterWindow（）; 
 g_pMainFrame-> ShowWindow（SW_SHOW）; 
 g_pMainFrame-> UpdateWindow（）; 
 
返回TRUE; 
} 

这是在框架窗口初始化函数内创建视图的另一种方法：

 int CMainFrame :: OnCreate（LPCREATESTRUCT lpCreateStruct）
 {
 if（CFrameWnd :: OnCreate（lpCreateStruct）== -1）
 return -1 ; 
 
 ... 
 
 //创建主视图
 CCreateContext context; 
 memset（& context，0，sizeof（CCreateContext））; 
 context.m_pNewViewClass = RUNTIME_CLASS（CMainView）; 
 VERIFY（g_pMainView = STATIC_DOWNCAST（CMainView，
 CreateView（& context，AFX_IDW_PANE_FIRST）））; 
 g_pMainView-> OnInitialUpdate（）; 
 SetActiveView（g_pMainView）; 
 
返回0; 
} 

以下是关闭活动视图的方法：

 void CCSMainFrame :: SwitchView（CView * pNewView）
 {
 ASSERT（pNewView）; 
 CView * pOldView = GetActiveView（）; 
 if（pOldView == pNewView）
 return; 
 
 if（pOldView）
 {
 //隐藏旧视图
 pOldView-> ShowWindow（SW_HIDE）; 
 :: SetWindowLong（pOldView-> m_hWnd，GWL_ID，AFX_IDW_PANE_FIRST + 1）; 
} 
 if（pNewView）
 {
 //显示新视图
 pNewView-> BringWindowToTop（）; 
 pNewView-> ShowWindow（SW_SHOWNORMAL）; 
 pNewView-> UpdateWindow（）; 
 :: SetWindowLong（pNewView-> m_hWnd，GWL_ID，AFX_IDW_PANE_FIRST）; 
 SetActiveView（pNewView）; 
 RecalcLayout（）; 
} 
} 

Hi All, I am new to this concept of Document View Architecture so please can any one help me to solve this problem and please give some programming example.Thanks for help...
[Update]
Any one please help me ...

解决方案

I suppose Google won't help you: "mfc document view architecture tutorial"[^].

http://msdn.microsoft.com/en-us/library/4x1xy43a%28v=vs.110%29.aspx[^]

Creating your first MFC Doc/View application[^]

http://www.ucancode.net/Visual_C_MFC_Samples/Multiple-document-views-VC-MFC-Example.htm[^]

When I am starting a new project I always choose between SDI or Dialog based depending on the interface layout I will need. Do not get sidetracked by "Document/View", I have created hundreds of projects but never once used the "Document" capabilities. One of the first things I do after generating a SDI project is remove the generated CDocument code. Think of it more as "Frame Window / View" vs "Dialog" based.

If your interface needs to be a complex, with frame windows you have built in control bars and you still have the CFormView class (which I use allot). If your project is a simple utility you would probably choose the Dialog based project.

The AppWizard generates a skeleton project for you but as a minimalist I try and remove all unnecessary code. I will post an example of the way I do things with SDI projects, I hope it helps a little.

Here is an example of an alternative way to create your main window:

//=================================================
// Global variables
//=================================================
CMainFrame*		g_pMainFrame = NULL;
CString			g_cstrWinClass("YourWindowClassName");


BOOL CApp::InitInstance()
{
	// InitCommonControls() is required on Windows XP if an application
	// manifest specifies use of ComCtl32.dll version 6 or later to enable
	// visual styles.  Otherwise, any window creation will fail.
	INITCOMMONCONTROLSEX iccx = {0};
	iccx.dwSize = sizeof(iccx);
	iccx.dwICC = ICC_STANDARD_CLASSES;
	InitCommonControlsEx(&iccx);

	CWinApp::InitInstance();

	// Create a window class
	WNDCLASS wc = {0};
	wc.style = CS_DBLCLKS|CS_GLOBALCLASS;
	wc.lpfnWndProc = ::DefWindowProc;
	wc.hInstance = AfxGetInstanceHandle();
	wc.hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	wc.hCursor = AfxGetApp()->LoadStandardCursor(IDC_ARROW);
	wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
	wc.lpszClassName = g_cstrWinClass;

	// Register the window class
	if(!::GetClassInfo(wc.hInstance, wc.lpszClassName, &wc))
	{
		if(!::RegisterClass(&wc))
		{
			TRACE(_T("Window class could not be registered\n"));
			return FALSE;
		}
	}


	// Create main window
	g_pMainFrame = new CMainFrame;
	m_pMainWnd = g_pMainFrame;
	// Call CreateWindow()
	DWORD dwStyle = WS_OVERLAPPEDWINDOW;
	if(!g_pMainFrame->Create(
		g_cstrWinClass, g_cstrWinName,
		dwStyle, CRect(0,0,1024,768), NULL,
		MAKEINTRESOURCE(IDR_MAINFRAME), NULL))
		return FALSE;
	g_pMainFrame->CenterWindow();
	g_pMainFrame->ShowWindow(SW_SHOW);
	g_pMainFrame->UpdateWindow();

	return TRUE;
}

Here is an alternative way to create your view(s) inside your frame window init function:

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if(CFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;

	... 

	// Create the main view
	CCreateContext context;
	memset(&context, 0, sizeof(CCreateContext));
	context.m_pNewViewClass = RUNTIME_CLASS(CMainView);
	VERIFY(g_pMainView = STATIC_DOWNCAST(CMainView,
		CreateView(&context, AFX_IDW_PANE_FIRST)));
	g_pMainView->OnInitialUpdate();
	SetActiveView(g_pMainView);

	return 0;
}

Here is how to switch out your active view:

void CCSMainFrame::SwitchView(CView* pNewView)
{
	ASSERT(pNewView);
	CView* pOldView = GetActiveView();
	if(pOldView == pNewView)
		return;

	if(pOldView)
	{
		// Hide the old view
		pOldView->ShowWindow(SW_HIDE);
		::SetWindowLong(pOldView->m_hWnd, GWL_ID, AFX_IDW_PANE_FIRST+1); 
	}
	if(pNewView)
	{
		// Show the new view
		pNewView->BringWindowToTop();
		pNewView->ShowWindow(SW_SHOWNORMAL);  
		pNewView->UpdateWindow();
		::SetWindowLong(pNewView->m_hWnd, GWL_ID, AFX_IDW_PANE_FIRST);  
		SetActiveView(pNewView);	
		RecalcLayout();	
	}
}

这篇关于VC ++ MFC中的文档视图体系结构的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！