孙鑫VC++深入详解:Lesson9 Part2---修改窗口光标,图表,背景

一. 窗口创建之前修改,用自定义的窗口类WNDCLASS wc

由于窗口的图标,光标,背景是在窗口类设计是指定的,因此要改的话,
就自己定义一个WNDCLASS wc,按照自己的需要填充wc,并注册RegisterClass(&wc)

1. 在MFC程序中,要修改出现窗口图表只能在框架类进行(CMainFrame)

2. 要修改背景和光标,应该在视类中进行,在框架类修改则看不见效果,因为MFC程序有2个窗口,视类和框架类,视类覆盖了框架类

在框架类CMainFrame的虚函数PreCreateWindow中去修改,这样等于是在窗口创建之前就修改.

//在窗口创建之前修改,要修改什么,就对编写一个自己的窗口类wc,并注册
BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{if( !CFrameWnd::PreCreateWindow(cs) )return FALSE;// TODO: Modify the Window class or styles here by modifying//  the CREATESTRUCT cs//------- 定义一个新的窗口类 wcWNDCLASS wc={0};wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);wc.hCursor =LoadCursor(NULL,IDC_HELP); wc.hIcon =LoadIcon(NULL,IDI_ERROR);wc.hInstance = AfxGetInstanceHandle();wc.lpfnWndProc = ::DefWindowProc;//全局的Win32APIwc.lpszClassName ="sunxin.org"; //这个名称取定了,不能随便改了,这就好比一个资源的名称,wc.lpszMenuName =NULL;wc.style =CS_HREDRAW|CS_VREDRAW;RegisterClass(&wc); //注册cs.lpszClass = "sunxin.org"; //把注册的类传给csreturn TRUE;
}

客户区背景色,光标等的修改还必须在CStyleView的虚函数PreCreateWindow中去进行:

BOOL CStyleView::PreCreateWindow(CREATESTRUCT& cs)
{// TODO: Modify the Window class or styles here by modifying//  the CREATESTRUCT cs//客户区背景色,光标等的修改生效都必须在View类中加下面这条语句,使用前面已经注册的窗口类名cs.lpszClass = "sunxin.org";//这个"sunxin.org"就是前面定义的那个窗口类的类名return CView::PreCreateWindow(cs);
}

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二. 窗口创建之前修改,用全局函数AfxRegisterWndClass  修改

    LPCTSTR AFXAPI AfxRegisterWndClass( UINT nClassStyle, HCURSOR hCursor = 0, HBRUSH hbrBackground = 0, HICON hIcon = 0 ); 

     在框架类中:CMainFrame::PreCreateWindow(CREATESTRUCT& cs)     

BOOL CMainFrame::PreCreateWindow(CREATESTRUCT& cs)
{if( !CFrameWnd::PreCreateWindow(cs) )return FALSE;// TODO: Modify the Window class or styles here by modifying//  the CREATESTRUCT cs//------使用全局函数AfxRegisterWndClass来修改cs.lpszClass = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW,0, //不改光标,因为在框架类总改了也看不到0,//不改背景,因为在框架类中改了也看不见框架的背景LoadIcon(NULL,IDI_WARNING) // 能该的就是这个框架图标了);return TRUE;
}

    在VIEW类中:BOOL CStyleView::PreCreateWindow(CREATESTRUCT& cs)

  

BOOL CStyleView::PreCreateWindow(CREATESTRUCT& cs)
{// TODO: Modify the Window class or styles here by modifying//  the CREATESTRUCT cs//------使用全局函数AfxRegisterWndClass来修改cs.lpszClass = AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW,LoadCursor(NULL,IDC_CROSS), //改光标(HBRUSH)GetStockObject(BLACK_BRUSH),//改背景,如果用NULL就是透明的了0 // 图标不用改了,在框架类中改了.);return CView::PreCreateWindow(cs);
}

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三. 窗口创建之后修改,用SetClassLong(),在OnCreate()中修改/

      因为是在窗口创建之后,所以肯定是在OnCreate()中.

      在MainFrame中也只能修改ICON

      int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{if (CFrameWnd::OnCreate(lpCreateStruct) == -1)return -1;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(IDR_MAINFRAME)){TRACE0("Failed to create toolbar\n");return -1;      // fail to create}if (!m_wndStatusBar.Create(this) ||!m_wndStatusBar.SetIndicators(indicators,sizeof(indicators)/sizeof(UINT))){TRACE0("Failed to create status bar\n");return -1;      // fail to create}// TODO: Delete these three lines if you don't want the toolbar to//  be dockablem_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);EnableDocking(CBRS_ALIGN_ANY);DockControlBar(&m_wndToolBar);//------用SetClassLong()修改标题栏图标SetClassLong(m_hWnd,GCL_HICON,(LONG)LoadIcon(NULL,IDI_ERROR));return 0;
}

在view中可以修改背景色,光标等等,但是view中没OnCreate函数,所以还必须先添加消WM_CREATE息响应函数  

// CStyleView message handlers// 在CStyleView类中增加WM_CREATE消息响应函数
int CStyleView::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{if (CView::OnCreate(lpCreateStruct) == -1)return -1;// TODO: Add your specialized creation code here//------用SetClassLong()修改背景色和光标SetClassLong(m_hWnd,GCL_HBRBACKGROUND,(LONG)GetStockObject(BLACK_BRUSH));//修改背景色SetClassLong(m_hWnd,GCL_HCURSOR,(LONG)LoadCursor(NULL,IDC_HELP));//修改背景色return 0;
}

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