广西网站建设营销公司,百度云网盘,网站推广塔山双喜,免费网站软件推荐正能量文章目录 CView类的分支CEditViewCHtmlViewMainFrm.h CMainFrame 类的接口CMainView .h CListCtrl与CListView的创建原理 CTreeViewCTreeCtrl类简介CTreeCtrl类的原理以及常用功能 MFC六大关键技术视图和带分割栏的框架开发与消息路由CLeftView.cppCRightView.hCRightView.cppC… 文章目录 CView类的分支CEditViewCHtmlViewMainFrm.h CMainFrame 类的接口CMainView .h CListCtrl与CListView的创建原理 CTreeViewCTreeCtrl类简介CTreeCtrl类的原理以及常用功能 MFC六大关键技术视图和带分割栏的框架开发与消息路由CLeftView.cppCRightView.hCRightView.cppCWelcome .hCWelcome.cppdivision.hdivision.cppMainFrm.hMainFrm.cpp 附录为什么用户点击一下视图即可让菜单有效 CView类的分支
CEditView
对CMainView使用了CEditView类的派生对其默认字体进行改变。
#include CMainView.hBOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext)
{CCreateContext cc;cc.m_pNewViewClass RUNTIME_CLASS(CMainView);CreateView(cc);return CFrameWnd::OnCreateClient(lpcs, pContext);
}// CMainView 视图
class CMainView : public CEditView
{DECLARE_DYNCREATE(CMainView)protected:CMainView(); // 动态创建所使用的受保护的构造函数virtual ~CMainView();protected:DECLARE_MESSAGE_MAP()
public:virtual void OnInitialUpdate();afx_msg void OnEnChange();
};void CMainView::OnInitialUpdate()
{CEditView::OnInitialUpdate();auto hFont (HFONT)GetStockObject(DEFAULT_GUI_FONT);SetFont(CFont::FromHandle(hFont), FALSE); //CFont::FromHandle(hFont) 将句柄转为指针 临时外壳}CHtmlView
需要添加#include afxhtml.h头文件
MainFrm.h CMainFrame 类的接口
#pragma once
class CMainView;
class CMainFrame : public CFrameWnd
{CMainView* m_pMainView;
}BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext)
{CCreateContext cc;cc.m_pNewViewClass RUNTIME_CLASS(CMainView);m_pMainView (CMainView*)CreateView(cc);return m_pMainView!NULL;
}BOOL CMainFrame::OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo)
{// 让视图第一次尝试该命令if (m_pMainView m_pMainView-OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;// 否则执行默认处理return CFrameWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
}CMainView .h
class CMainView : public CHtmlView
{DECLARE_DYNCREATE(CMainView)
}#include pch.h
#include Browse.h
#include CMainView.hvoid CMainView::OnInitialUpdate()
{CHtmlView::OnInitialUpdate();Navigate2(_T(www.baidu.com)); //导航到目标地址上}CListCtrl与CListView的创建原理
a)CListCtrl的内部创建原理是通过CWnd::Create(sClassName,…)来实现的。 b)CStatic,CEdit,CButton的内部创建原理无一不是这个原理即使是拖入对话框的控件底层也是这样实现的。 通过.rc读取风格和位置等要素再调用CWnd类的Create函数 c)CListView和CTreeView整个类都几乎没有代码其实就是一个变种的CListCtrl或者CTreeCtrl。 d)所以你会看到直接强转
INLINE CListCtrl CListView::GetListCtrl() const{ return *(CListCtrl*)this; }CListView和CTreeView的原理
// CListView
_AFXCVIEW_INLINE CListView::CListView() : CCtrlView(WC_LISTVIEW,AFX_WS_DEFAULT_VIEW){ }_AFXCVIEW_INLINE CListCtrl CListView::GetListCtrl() const{ return *(CListCtrl*)this; }
_AFXCVIEW_INLINE CTreeView::CTreeView() : CCtrlView(WC_TREEVIEW,AFX_WS_DEFAULT_VIEW){ }_AFXCVIEW_INLINE CTreeCtrl CTreeView::GetTreeCtrl() const{ return *(CTreeCtrl*)this; }
CTreeView
CTreeCtrl类简介
class CTreeCtrl : public CWnd
{// DECLARE_DYNAMIC virtual OK - CWnd has DECLARE_DYNAMICDECLARE_DYNAMIC(CTreeCtrl)// Constructors
public:CTreeCtrl();// Generic creatorBOOL Create(_In_ DWORD dwStyle, _In_ const RECT rect, _In_ CWnd* pParentWnd, _In_ UINT nID);// Generic creator allowing extended style bitsBOOL CreateEx(_In_ DWORD dwExStyle, _In_ DWORD dwStyle, _In_ const RECT rect,_In_ CWnd* pParentWnd, _In_ UINT nID);// Attributes// Retrieves the bounding rectangle for the specified item.BOOL GetItemRect(_In_ HTREEITEM hItem, _Out_ LPRECT lpRect, _In_ BOOL bTextOnly) const;// Gets the count of items in the control.UINT GetCount() const;// Returns the level-to-level indentation (in pixels).UINT GetIndent() const;// Sets the level-to-level indentation (in pixels).void SetIndent(_In_ UINT nIndent);// Retrieves the image list associated with the control.CImageList* GetImageList(_In_ int nImageList) const;// Sets the image list associated with this control.CImageList* SetImageList(_In_opt_ CImageList* pImageList, _In_ int nImageList);// Retrieves the next item having the given relationship with the// specified item. 遍历函数HTREEITEM GetNextItem(_In_ HTREEITEM hItem, _In_ UINT nCode) const;// Retrieves the next child item after the specified item.HTREEITEM GetChildItem(_In_ HTREEITEM hItem) const;
// 获取长子// Retrieves the next sibling item after the specified item.HTREEITEM GetNextSiblingItem(_In_ HTREEITEM hItem) const;// Retrieves the previous sibling item of the specified item.HTREEITEM GetPrevSiblingItem(_In_ HTREEITEM hItem) const;// Retrieves the parent of the specified item.HTREEITEM GetParentItem(_In_ HTREEITEM hItem) const;// Retrieves the topmost visible item in the control.HTREEITEM GetFirstVisibleItem() const;// Retrieves the next visible item after the specified item.HTREEITEM GetNextVisibleItem(_In_ HTREEITEM hItem) const;// Retrieves the previous visible item before the specified item.HTREEITEM GetPrevVisibleItem(_In_ HTREEITEM hItem) const;// Retrieves the last expanded item in the tree. This does not retrieve the last item visible in the tree-view window.HTREEITEM GetLastVisibleItem() const;// Retrieves the higlighted item, NULL if none.HTREEITEM GetSelectedItem() const;获取选中的项// Retrieves the currently drop-highlighted item, NULL if none.HTREEITEM GetDropHilightItem() const;// Retrieves the root item of the control, NULL if none.HTREEITEM GetRootItem() const;// Retrieves information about a particular item in the control.BOOL GetItem(_Out_ TVITEM* pItem) const;// Retrieves the text associated with the given item.CString GetItemText(_In_ HTREEITEM hItem) const;// Retrieves the images associated with the given item.BOOL GetItemImage(_In_ HTREEITEM hItem, _Out_ int nImage,_Out_ int nSelectedImage) const;// Retrieves the state of the given item.UINT GetItemState(_In_ HTREEITEM hItem, _In_ UINT nStateMask) const;// Retrieves the user-supplied data associated with the given item.DWORD_PTR GetItemData(_In_ HTREEITEM hItem) const;// Sets the state of the an item.BOOL SetItem(_In_ TVITEM* pItem);BOOL SetItem(_In_ HTREEITEM hItem, _In_ UINT nMask, _In_opt_z_ LPCTSTR lpszItem, _In_ int nImage,_In_ int nSelectedImage, _In_ UINT nState, _In_ UINT nStateMask, _In_ LPARAM lParam);BOOL SetItemEx(_In_ HTREEITEM hItem, _In_ UINT nMask, _In_opt_z_ LPCTSTR lpszItem, _In_ int nImage,_In_ int nSelectedImage, _In_ UINT nState, _In_ UINT nStateMask, _In_ LPARAM lParam,_In_ UINT uStateEx, _In_opt_ HWND hWnd, _In_ int iExpandedImage);// Sets the text of the specified item.BOOL SetItemText(_In_ HTREEITEM hItem, _In_z_ LPCTSTR lpszItem);// Sets the image on the specified item.BOOL SetItemImage(_In_ HTREEITEM hItem, _In_ int nImage, _In_ int nSelectedImage);// Sets the state of the specified item.BOOL SetItemState(_In_ HTREEITEM hItem, _In_ UINT nState, _In_ UINT nStateMask);// Sets the user data on the specified item.BOOL SetItemData(_In_ HTREEITEM hItem, _In_ DWORD_PTR dwData);// Determines if the specified item has children.BOOL ItemHasChildren(_In_ HTREEITEM hItem) const;// Gets the count of items presently visible in the control.UINT GetVisibleCount() const;// Retrieves the tool tip control associated with this control.CToolTipCtrl* GetToolTips() const;// Sets the tool tip control to be used by this control.CToolTipCtrl* SetToolTips(_In_ CToolTipCtrl* pWndTip);// Retrieves the background colour used throughout the control.COLORREF GetBkColor() const;// Sets the background color to be used throughout the control.COLORREF SetBkColor(_In_ COLORREF clr);// Retrieves the height of items in the control.SHORT GetItemHeight() const;// Sets the height of items in the control.SHORT SetItemHeight(_In_ SHORT cyHeight);// Retrieves the text color used for all items in the control.COLORREF GetTextColor() const;// Sets the text color used for all items in the control.COLORREF SetTextColor(_In_ COLORREF clr);// Gets the checked state of the specified item in the control.// (Only useful on a control with the TVS_CHECKBOXES style.)BOOL GetCheck(_In_ HTREEITEM hItem) const;// Sets the checked state of the specified item in the control.// (Only useful on a control with the TVS_CHECKBOXES style.)BOOL SetCheck(_In_ HTREEITEM hItem, _In_ BOOL fCheck TRUE);COLORREF GetLineColor() const;COLORREF SetLineColor(_In_ COLORREF clrNew CLR_DEFAULT);// Operations// Inserts a new item to the control.HTREEITEM InsertItem(_In_ LPTVINSERTSTRUCT lpInsertStruct);HTREEITEM InsertItem(_In_ UINT nMask, _In_z_ LPCTSTR lpszItem, _In_ int nImage,_In_ int nSelectedImage, _In_ UINT nState, _In_ UINT nStateMask, _In_ LPARAM lParam,_In_ HTREEITEM hParent, _In_ HTREEITEM hInsertAfter);HTREEITEM InsertItem(_In_z_ LPCTSTR lpszItem, _In_ HTREEITEM hParent TVI_ROOT,_In_ HTREEITEM hInsertAfter TVI_LAST);HTREEITEM InsertItem(_In_z_ LPCTSTR lpszItem, _In_ int nImage, _In_ int nSelectedImage,_In_ HTREEITEM hParent TVI_ROOT, _In_ HTREEITEM hInsertAfter TVI_LAST);// Removes the specified item from the control.BOOL DeleteItem(_In_ HTREEITEM hItem);// Removes all items from the control.BOOL DeleteAllItems();// Expands the children of the specified item.BOOL Expand(_In_ HTREEITEM hItem, _In_ UINT nCode);// Selects the specified item. 选中BOOL Select(_In_ HTREEITEM hItem, _In_ UINT nCode);// Selects the specified item.BOOL SelectItem(_In_opt_ HTREEITEM hItem);// Selects an item to be the drop target in the control.BOOL SelectDropTarget(_In_opt_ HTREEITEM hItem);// Draws the specified item as the drop target for the control.BOOL SelectSetFirstVisible(_In_ HTREEITEM hItem);// Begins editing the label of the specified item.CEdit* EditLabel(_In_ HTREEITEM hItem);
TVN_ENDEDIT 消息时获取编辑控件把用户输入的文字取出来// Retrieves the edit control used to perform in-place editing.CEdit* GetEditControl() const;
};树形控件的属性
#define TVS_HASBUTTONS 0x0001
#define TVS_HASLINES 有虚线 0x0002
#define TVS_LINESATROOT 0x0004 #define TVS_EDITLABELS 0x0008
#define TVS_DISABLEDRAGDROP 0x0010
#define TVS_SHOWSELALWAYS 0x0020
#define TVS_RTLREADING 0x0040
#define TVS_NOTOOLTIPS 0x0080
#define TVS_CHECKBOXES 0x0100
#define TVS_TRACKSELECT 0x0200
#define TVS_SINGLEEXPAND 0x0400
#define TVS_INFOTIP 0x0800
#define TVS_FULLROWSELECT 0x1000
#define TVS_NOSCROLL 0x2000
#define TVS_NONEVENHEIGHT 0x4000
#define TVS_NOHSCROLL 0x8000 // TVS_NOSCROLL overrides this#if (NTDDI_VERSION NTDDI_WINXP)
#define TVS_EX_NOSINGLECOLLAPSE 0x0001
#endif
#if (NTDDI_VERSION NTDDI_VISTA)
#define TVS_EX_MULTISELECT 0x0002
#define TVS_EX_DOUBLEBUFFER 0x0004
#define TVS_EX_NOINDENTSTATE 0x0008
#define TVS_EX_RICHTOOLTIP 0x0010
#define TVS_EX_AUTOHSCROLL 0x0020
#define TVS_EX_FADEINOUTEXPANDOS 0x0040
#define TVS_EX_PARTIALCHECKBOXES 0x0080
#define TVS_EX_EXCLUSIONCHECKBOXES 0x0100
#define TVS_EX_DIMMEDCHECKBOXES 0x0200
#define TVS_EX_DRAWIMAGEASYNC 0x0400
#endifCTreeCtrl类的原理以及常用功能
CTreeCtrl类的选中消息分析 a)结构体
typedef struct tagTVITEMCHANGE {NMHDR hdr;UINT uChanged;HTREEITEM hItem;UINT uStateNew;UINT uStateOld;LPARAM lParam;
} NMTVITEMCHANGE;b)State状态分析
TVIS_SELECTED0x0002项被选中。
TVIS_CUT0x0008项被剪切。
TVIS_DROPHILITED0x0004项高亮显示用于拖放操作。
TVIS_EXPANDED0x0020项展开。
TVIS_BOLD0x0001项以粗体显示。
TVIS_DISABLED0x0040项禁用灰色显示。
TVIS_EXPANDEDONCE0x0200项已经展开过一次。
TVIS_EXPANDPARTIAL0x0400项部分展开。
TVIS_OVERLAYMASK0x0F00覆盖层蒙版。MFC六大关键技术
1、MFC Initialization —— MFC程序的初始化过程 参见CWinApp::InitInstance的虚函数MFC内部接管WinMain平台启动初始化之后再调用InitInstance。 开发者需要创建CWinApp的派生类并且在全局区定义派生类的全局对象最后在派生类礼重写InitInstance虚函数。
2、Message Mapping —— 消息映射 参见任何窗口派生类的头文件中 DECLARE_MESSAGE_MAP 源文件中 BEGIN_MESSAGE_MAP(CMainDlg, CDialogEx) 消息映射的数组{数组的每个元素都是一个结构体消息-ID-函数地址} END_MESSAGE_MAP()
3、Message Routing —— 消息传递路由 主要在框架与视图架构里把框架收到的菜单和工具栏消息分发到各个视图类。
BOOL CMainFrame::OnCmdMsg(UINT nID...)if (m_pView m_pView-OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;4、RTTIRuntime Type Identification—— 运行时类型识别 核心的作用是任何MFC的类CObject派生都能够获取到类型信息。 而且能知道你的派生类是谁甚至获取到整个派生树分枝的名字。
auto pInfo obj.GetRuntimeClass();
while (pInfo)
{AfxMessageBox(CString(_T(你是)) pInfo-m_lpszClassName);pInfo pInfo-m_pBaseClass;//pNext;
}参见RUNTIME_CLASS宏以及每个MFC类的信息管理 DECLARE_DYNAMIC(CMainFrame) IMPLEMENT_DYNAMIC(CMainFrame, CFrameWnd) RTTI运行时识别类型靠的就是
BOOL CObject::IsKindOf(const CRuntimeClass* pClass) const;
CRuntimeClass* pClassThis GetRuntimeClass();5、Dynamic Creation —— 动态创建 比动态类型识别多了一个函数 原理参见DECLARE_DYNCREATE(CApp)
IMPLEMENT_DYNCREATE(CApp, CWinApp)
class CApp::public CWinApp
{
public:
static CObject* WINAPI CApp::CreateObject() { return new CApp; }
}6、Persistence ——永久保存串行化、序列化 利用CArchive类将对象数据保存到磁盘上把数据按照顺序连续(operator)存入到磁盘加载时按照存入的顺序连续提取数据(operator) 优点是比结构体在存储文字时节省存储空间存储文字时先存编码和长度加载时再根据长度读取文字并根据来源编码格式转换到目标格式。 MFC这种连续存储的机制称之为序列化存储Serialize。
视图和带分割栏的框架开发与消息路由
CLeftView.h
class CLeftView : public CTreeView{DECLARE_DYNCREATE(CLeftView) //动态创建CTreeCtrl m_tree { GetTreeCtrl() };CImageList m_iList;int GetDepth(HTREEITEM hItem) const;
protected:CLeftView(); // 动态创建所使用的受保护的构造函数virtual ~CLeftView();void InitCtrl();
protected:DECLARE_MESSAGE_MAP()
};CLeftView.cpp
#include pch.h
#include division.h
#include CLeftView.h
#include CRightView.h
#include CWelcome.h
IMPLEMENT_DYNCREATE(CLeftView, CTreeView)
CLeftView::CLeftView()
{theApp.m_pLeftView this;
}
CLeftView::~CLeftView()
{}BEGIN_MESSAGE_MAP(CLeftView, CTreeView)ON_NOTIFY_REFLECT(TVN_SELCHANGED, CLeftView::OnTvnSelchanged)ON_NOTIFY_REFLECT(TVN_ITEMEXPANDED, CLeftView::OnTvnItemexpanded)ON_NOTIFY_REFLECT(TVN_ITEMCHANGED, CLeftView::OnTvnItemChanged)ON_COMMAND(ID_COMP_ADD, CLeftView::OnCompAdd)ON_COMMAND(ID_COMP_DEL, CLeftView::OnCompDel)
END_MESSAGE_MAP()
// CLeftView 诊断
#ifdef _DEBUG
void CLeftView::AssertValid() const{CTreeView::AssertValid();
}// CLeftView 消息处理程序
void CLeftView::OnInitialUpdate()
{CTreeView::OnInitialUpdate();if (m_iList.GetSafeHandle())return;InitCtrl();ModifyStyle(0, TVS_HASLINES| TVS_HASBUTTONS | TVS_LINESATROOT | TVS_SHOWSELALWAYS);auto hItem m_tree.InsertItem(_T(异人之下),0,1);auto h m_tree.InsertItem(_T(那都通),2,3, hItem);m_tree.InsertItem(_T(张楚岚),5,4,h);m_tree.InsertItem(_T(冯宝宝),5,4,h);m_tree.InsertItem(_T(徐三), 5,4,h);m_tree.InsertItem(_T(徐四), 5,4,h);m_tree.Expand(h, TVE_EXPAND);auto h2 m_tree.InsertItem(_T(武当山),2,3 ,hItem);m_tree.InsertItem(_T(王也), 5,4, h2);m_tree.InsertItem(_T(老天师),5,4, h2);m_tree.InsertItem(_T(诸葛青),5,4, h2);m_tree.InsertItem(_T(诸葛玄),5,4, h2);m_tree.Expand(h2, TVE_EXPAND);m_tree.Expand(hItem, TVE_EXPAND); //要先插入再展开//m_tree.Select(h2, TVGN_CARET); //设置当前选择 并且带有样式m_tree.SelectItem(h); //设置当前选择 没有样式
}void CLeftView::InitCtrl(){m_iList.Create(16, 16, ILC_COLOR32, 8, 8);int i -1;while (i 6){m_iList.Add(theApp.LoadIcon(IDI_ICON1 i));}m_tree.SetImageList(m_iList, TVSIL_NORMAL);
}int CLeftView::GetDepth(HTREEITEM hItem) const //用于获取当前选中的行在 多深
{if (!hItem)return -1;int i 0;while (hItem m_tree.GetParentItem(hItem)){i;}return i;
}void CLeftView::OnTvnSelchanged(NMHDR* pNMHDR, LRESULT* pResult)
{LPNMTREEVIEW pNMTreeView reinterpret_castLPNMTREEVIEW(pNMHDR);// TODO: 在此添加控件通知处理程序代码*pResult 0;
}
void CLeftView::OnTvnItemexpanded(NMHDR* pNMHDR, LRESULT* pResult) //展开或者折叠
{LPNMTREEVIEW pNMTreeView reinterpret_castLPNMTREEVIEW(pNMHDR);*pResult 0;
}void CLeftView::OnTvnItemChanged(NMHDR* pNMHDR, LRESULT* pResult)
{NMTVITEMCHANGE* p reinterpret_castNMTVITEMCHANGE*(pNMHDR);auto hItem p-hItem;if (TVIS_SELECTED p-uStateNew){auto split theApp.m_split;auto pRightView theApp.m_split.GetPane(0, 1); if (pRightView)split.DeleteView(0,1);switch (GetDepth(hItem)){case 0:case 1:split.CreateView(0, 1, RUNTIME_CLASS(CWelcome), { 0,0 }, NULL); break;case 2:{split.CreateView(0, 1, RUNTIME_CLASS(CRightView), { 0,0 }, NULL); CRightView* pRightView (CRightView*) split.GetPane(0, 1);pRightView-Refresh();}}split.RecalcLayout();}*pResult 0;
}CRightView.h
class CRightView : public CListView{DECLARE_DYNCREATE(CRightView)//动态创建CListCtrl m_list GetListCtrl(); //说白了任何一个控件的创建都是由CWnd::Create(sCLassName)
protected:CRightView(); // 动态创建所使用的受保护的构造函数virtual ~CRightView();
public:void Refresh();
protected:DECLARE_MESSAGE_MAP()
public:afx_msg void OnStaffAdd();afx_msg void OnStaffDel();virtual void OnInitialUpdate();virtual BOOL PreCreateWindow(CREATESTRUCT cs); };CRightView.cpp
#include pch.h
#include division.h
#include CRightView.h
IMPLEMENT_DYNCREATE(CRightView, CListView)
CRightView::CRightView(){theApp.m_pRightView this;
}
CRightView::~CRightView()
{theApp.m_pRightView nullptr;
}
BEGIN_MESSAGE_MAP(CRightView, CListView)ON_COMMAND(ID_STAFF_ADD, CRightView::OnStaffAdd)ON_COMMAND(ID_STAFF_DEL, CRightView::OnStaffDel)
END_MESSAGE_MAP()void CRightView::Refresh()
{
}
void CRightView::AssertValid() const
{CListView::AssertValid();
}
void CRightView::OnStaffAdd()
{}
void CRightView::OnStaffDel()
{}void CRightView::OnInitialUpdate(){CListView::OnInitialUpdate();if (m_list.GetHeaderCtrl()-GetItemCount() 0) //防止标题插入两边return;m_list.InsertColumn(0, _T(工号), 0, 150);m_list.InsertColumn(1, _T(姓名), 0, 150);m_list.InsertColumn(2, _T(性别), 0, 150);m_list.InsertColumn(3, _T(入职日期), 0, 150);m_list.InsertColumn(4, _T(外语), 0, 150);m_list.InsertColumn(5, _T(工资), 0, 150);
}BOOL CRightView::PreCreateWindow(CREATESTRUCT cs)
{ cs.style | LVS_REPORT;return CListView::PreCreateWindow(cs);
}CWelcome .h
class CWelcome : public CFormView{DECLARE_DYNCREATE(CWelcome)
protected:CWelcome(); // 动态创建所使用的受保护的构造函数virtual ~CWelcome();protected:virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV 支持DECLARE_MESSAGE_MAP()
};CWelcome.cpp
#include pch.h
#include division.h
#include CWelcome.h
IMPLEMENT_DYNCREATE(CWelcome, CFormView)CWelcome::CWelcome(): CFormView(IDD_FORMVIEW)
{theApp.m_pRightView this;
}
CWelcome::~CWelcome()
{theApp.m_pRightView NULL;
}
BEGIN_MESSAGE_MAP(CWelcome, CFormView)
END_MESSAGE_MAP()division.h
#include resource.h // 主符号
#include CLeftView.h
// CApp:有关此类的实现请参阅 division.cpp
class CLeftView;
class CRightView;
class CApp : public CWinApp
{
public:CApp() noexcept;CLeftView* m_pLeftView{};CView* m_pRightView{};CSplitterWnd m_split;
};
extern CApp theApp;division.cpp
#include pch.h
#include framework.h
#include afxwinappex.h
#include afxdialogex.h
#include division.h
#include MainFrm.h#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CApp
BEGIN_MESSAGE_MAP(CApp, CWinApp)ON_COMMAND(ID_APP_ABOUT, CApp::OnAppAbout)
END_MESSAGE_MAP()BOOL CApp::InitInstance(){ // CApp 初始化CFrameWnd* pFrame new CMainFrame;if (!pFrame) return FALSE;m_pMainWnd pFrame; // 创建并加载框架及其资源pFrame-LoadFrame(IDR_MAINFRAME,WS_OVERLAPPEDWINDOW | FWS_ADDTOTITLE, nullptr,nullptr);if (m_pRightView-IsKindOf(RUNTIME_CLASS(CCtrlView)))AfxMessageBox(_T(m_pRightView对象是CCtrlView派生的));elseAfxMessageBox(_T(m_pRightView对象不是CCtrlView派生的));if (m_pRightView-IsKindOf(RUNTIME_CLASS(CFormView)))AfxMessageBox(_T(m_pRightView对象是CFormView派生的));elseAfxMessageBox(_T(m_pRightView对象不是CFormView派生的));pFrame-ShowWindow(SW_SHOW); // 唯一的一个窗口已初始化因此显示它并对其进行更新pFrame-UpdateWindow(); return TRUE; }// 唯一的 CApp 对象
CApp theApp;// 用于运行对话框的应用程序命令
void CApp::OnAppAbout()
{CAboutDlg aboutDlg;aboutDlg.DoModal();
}MainFrm.h
class CMainFrame : public CFrameWnd{
public:CMainFrame() noexcept;
protected: DECLARE_DYNAMIC(CMainFrame) //动态识别
public: // 重写virtual BOOL PreCreateWindow(CREATESTRUCT cs);virtual BOOL OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo);
public: // 实现virtual ~CMainFrame();
protected:afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);afx_msg void OnSetFocus(CWnd *pOldWnd);DECLARE_MESSAGE_MAP()virtual BOOL OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext); };MainFrm.cpp
#include pch.h
#include framework.h
#include division.h
#include CLeftView.h
#include CRightView.h
#include MainFrm.h// CMainFrame 构造/析构
CMainFrame::CMainFrame() noexcept
{// TODO: 在此添加成员初始化代码
}
CMainFrame::~CMainFrame()
{
}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(未能创建工具栏\n);return -1; // 未能创建 }if (!m_wndStatusBar.Create(this)) {TRACE0(未能创建状态栏\n);return -1; // 未能创建 }m_wndStatusBar.SetIndicators(indicators, sizeof(indicators)/sizeof(UINT));m_wndToolBar.EnableDocking(CBRS_ALIGN_ANY);// TODO: 如果不需要可停靠工具栏则删除这三行EnableDocking(CBRS_ALIGN_ANY);DockControlBar(m_wndToolBar); return 0; }BOOL CMainFrame::PreCreateWindow(CREATESTRUCT cs)
{if( !CFrameWnd::PreCreateWindow(cs) )return FALSE;// TODO: 在此处通过修改// CREATESTRUCT cs 来修改窗口类或样式cs.dwExStyle ~WS_EX_CLIENTEDGE;cs.lpszClass AfxRegisterWndClass(0);return TRUE;
}
// CMainFrame 消息处理程序void CMainFrame::OnSetFocus(CWnd* /*pOldWnd*/)
{// 将焦点前移到视图窗口if (theApp.m_pLeftView)theApp.m_pLeftView-SetFocus();
}BOOL CMainFrame::OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo)
{// 让视图第一次尝试该命令if (theApp.m_pLeftView theApp.m_pLeftView-OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;if (theApp.m_pRightView theApp.m_pRightView-OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;// 否则执行默认处理return CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
}
BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext){auto split theApp.m_split;split.CreateStatic(this, 1, 2);split.CreateView(0, 1, RUNTIME_CLASS(CRightView), { 0,0 }, NULL); //righrview 要在leftview之前 因为在leftview中调用rightview读取数据时rightview还没有创建拿不到数据 报它为空split.CreateView(0, 0, RUNTIME_CLASS(CLeftView), { 150,0 }, NULL);//theApp.m_pLeftView (CLeftView*)split.GetPane(0, 0); //做这个的目的为了是 点击左边的时候找右边方便 点击右边的时候找左边方便
//theApp.m_pRightView (CRightView*)split.GetPane(0, 1);//给这个指针赋值也可通过构造函数赋值//CCreateContext cc;//cc.m_pNewViewClass RUNTIME_CLASS(CLeftView);//theApp.m_pLeftView (CLeftView*) CreateView(cc);return TRUE;
}附录为什么用户点击一下视图即可让菜单有效
CView* pView GetActiveView();
BOOL CFrameWnd::OnCmdMsg(UINT nID, int nCode, void* pExtra,AFX_CMDHANDLERINFO* pHandlerInfo){CPushRoutingFrame push(this);// pump through current view FIRSTCView* pView GetActiveView();if (pView ! NULL pView-OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;// then pump through frameif (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;// last but not least, pump through appCWinApp* pApp AfxGetApp();if (pApp ! NULL pApp-OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))return TRUE;return FALSE;
}
