MFC自定义控件.doc

/3582077/blog/item/537142f7f2ca1d3b730eec60.html关于Custom Control自定义控件的介绍，有一篇文章感觉不错，不过是英文的，英语不好的也没关系，不是有“有道”吗？再说了，我们只要看代码就行了，而且步骤也就那么几步，结合教程图片稍微猜一下也就知道了。原文地址：/KB/static/CustomControl.aspx接下来我把上面教程的操作步骤简单描述一下：1、首先往对话框添加一个“自定义控件”，然后右击该控件选择“建立类向导”，在弹出的对话框点击“Add Class.”，选择“New.,之后“Name项填CMyCustomControl, “Base Class选择generic CWnd,点确定。在MyCustomControl.h添加函数声明BOOL RegisterWndClass();给CMyCustomControl类添加如下函数：BOOL CMyCustomControl:RegisterWndClass()WNDCLASS windowclass;HINSTANCE hInst=AfxGetInstanceHandle();if(!:GetClassInfo(hInst,MyDrawPad,&windowclass)windowclass.style=CS_DBLCLKS;windowclass.lpfnWndProc=:DefWindowProc;windowclass.cbClsExtra=windowclass.cbWndExtra=0;windowclass.hInstance=hInst;windowclass.hIcon=NULL;windowclass.hCursor=AfxGetApp()-LoadStandardCursor(IDC_ARROW);windowclass.hbrBackground=:GetSysColorBrush(COLOR_WINDOW);windowclass.lpszMenuName=NULL;windowclass.lpszClassName=MyDrawPad;if(!AfxRegisterClass(&windowclass)AfxThrowResourceException();return FALSE;return TRUE;在MyCustomControl类构造函数中调用RegisterWndClass函数，如下：CMyCustomControl:CMyCustomControl()RegisterWndClass();接着右击对话框里“自定义控件”，选择属性，“种类”框里填上MyDrawPad（窗口类）。给对话框类添加一个CMyCustomControl类对象（是在*Dlg.h）。如：CMyCustomControl m_drawpad;（记得包含头文件）。#include MyCustomControl.h对话框类的DoDataExchange函数里添加如下语句：void CThirdDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CThirdDlg)/ NOTE: the ClassWizard will add DDX and DDV calls here/AFX_DATA_MAPDDX_Control(pDX,IDC_CUSTOM1,m_drawpad);/IDC_CUSTOM1为自定义控件的ID号到了这里，自定义控件的基本问题算是解决了。可自行给CMyCustomControl类添加消息响应函数，运行一下吧。自定义控件仿工具栏标题名是仿工具栏控件，其实也只是仿下工具栏那个模式而已，想一下，工具栏类里有那么多个函数，能仿得过来吗？如果有谁觉得用自定义控件模仿这个太麻烦的话，也可直接从按钮控件（CButton)派生出类来代替“自定义控件”类。我这里就直接以上面工程的CMyCustomControl类为例。1、首先往工程里引三张图片如下：2、再引入六个图标，用于项显示图标，ID号保持默认不变，3、CMyCustomControl添加如下成员变量（私有变量）4、响应自定义控件（CMyCustomControl) WM_ERASEBKGND、WM_LBUTTONDOWN、WM_LBUTTONUP、WM_MOUSEMOVE、WM_PAINT、WM_TIMER消息5、添加如下成员函数6、构造函数中初始化部分成员变量（私有变量初始化）7、添加各函数代码8、成员函数要在.h中的public中声明void SetBitmapIDs(UINT BKID,UINT itemMOverID,UINT itemPushID);BOOL SetItemSize(int Width,int Height,int itemSpacing=5);BOOL SetImageList(CImageList *pImageList);BOOL AddItem(UINT nID);9、在*Dlg.h中定义一个需要用到的变量CImageList m_ImageList;10、在*.cpp中添加初始化响应函数m_ImageList.Create(32,32,ILC_COLOR32|ILC_MASK,1,0);for(int i=0;iLoadIcon(IDI_ICON1+i);m_drawpad.SetImageList(&m_ImageList);m_drawpad.SetBitmapIDs(IDB_BK,IDB_ITEMOVER,IDB_ITEMPUSH);m_drawpad.SetItemSize(38,40,3);for(i=0;iLoadStandardCursor(IDC_ARROW);windowclass.hbrBackground=:GetSysColorBrush(COLOR_WINDOW);windowclass.lpszMenuName=NULL;windowclass.lpszClassName=MyDrawPad;if(!AfxRegisterClass(&windowclass)AfxThrowResourceException();return FALSE;return TRUE;在MyCustomControl类构造函数中调用RegisterWndClass函数，如下：CMyCustomControl:CMyCustomControl()RegisterWndClass();接着右击对话框里“自定义控件”，选择属性，“种类”框里填上MyDrawPad（窗口类）。给对话框类添加一个CMyCustomControl类对象。如：CMyCustomControl m_drawpad;（记得包含头文件）。对话框类的DoDataExchange函数里添加如下语句：void CThirdDlg:DoDataExchange(CDataExchange* pDX)CDialog:DoDataExchange(pDX);/AFX_DATA_MAP(CThirdDlg)/ NOTE: the ClassWizard will add DDX and DDV calls here/AFX_DATA_MAPDDX_Control(pDX,IDC_CUSTOM1,m_drawpad);/IDC_CUSTOM1为自定义控件的ID号到了这里，自定义控件的基本问题算是解决了。可自行给CMyCustomControl类添加消息响应函数，运行一下吧。自定义控件仿工具栏标题名是仿工具栏控件，其实也只是仿下工具栏那个模式而已，想一下，工具栏类里有那么多个函数，能仿得过来吗？如果有谁觉得用自定义控件模仿这个太麻烦的话，也可直接从按钮控件（CButton)派生出类来代替“自定义控件”类。我这里就直接以上面工程的CMyCustomControl类为例。首先往工程里引三张图片如下：自定义控件背景，ID号：IDB_BK鼠标停留时，项背景，ID号：IDB_ITMEOVER鼠标单击时，项背景，ID号：IDB_ITEMPUSH再引入六个图标，用于项显示图标，ID号保持默认不变，IDI_ICON1、IDI_ICON2。IDI_ICON6CMyCustomControl添加如下成员变量：private:CRect m_itemRect10;/各项区域UINT m_itemID10;/各项ID号CImageList *m_pImageList;/各项图标int m_itemCount;/项数量UINT m_BKID;/控件背景位图ID号UINT m_itemMOverID;/项鼠标停留时的背景位图ID号UINT m_itemMPushID;/项鼠标按下时的背景位图ID号int m_itemWidth;/项宽int m_itemHeight;/项高int m_itemSpacing;/项区域间距，上下左右。int m_CurMouseItem;/记录当前鼠标位置所在项int m_TimerID;/计时器ID号BOOL m_MousePush;/鼠标是否在按下中响应自定义控件（CMyCustomControl) WM_ERASEBKGND、WM_LBUTTONDOWN、WM_LBUTTONUP、WM_MOUSEMOVE、WM_PAINT、WM_TIMER消息，各消息处理函数如下：BOOL CMyCustomControl:OnEraseBkgnd(CDC* pDC)void CMyCustomControl:OnLButtonDown(UINT nFlags, CPoint point)void CMyCustomControl:OnLButtonUp(UINT nFlags, CPoint point)void CMyCustomControl:OnMouseMove(UINT nFlags, CPoint point)void CMyCustomControl:OnPaint()void CMyCustomControl:OnTimer(UINT nIDEvent)添加如下成员函数：BOOL CMyCustomControl:AddItem(UINT nID)/此函数添加项/设置控件背景位图ID，项状态位图背景ID(鼠标停留，单击）void CMyCustomControl:SetBitmapIDs(UINT BKID, UINT itemMOverID, UINT itemMPushID)BOOL CMyCustomControl:SetImageList(CImageList *pImageList)/设置图像列表BOOL CMyCustomControl:SetItemSize(int Width, int Height,int itemSpacing)/设置项宽高构造函数中初始化部分成员变量：CMyCustomControl:CMyCustomControl() m_pImageList=NULL;m_itemCount=0;m_itemWidth=26;m_itemHeight=30;m_BKID=NULL;m_itemSpacing=5;m_CurMouseItem=-1;m_TimerID=1500;m_MousePush=FALSE;RegisterWndClass();/如果是从按钮控件(CButton)派生出的类，则不要调用此语句各函数代码如下：BOOL CMyCustomControl:OnEraseBkgnd(CDC* pDC)/ TODO: Add your message handler code here and/or call defaultreturn TRUE;/直接返回真/return CWnd:OnEraseBkgnd(pDC);/禁止父类擦除背景，重画。void CMyCustomControl:OnLButtonDown(UINT nFlags, CPoint point)/ TODO: Add your message handler code here and/or call defaultm_MousePush=TRUE;/鼠标左键处于按下状态this-Invalidate();/刷新控件窗口CWnd:OnLButtonDown(nFlags, point);void CMyCustomControl:OnLButtonUp(UINT nFlags, CPoint point)/ TODO: Add your message handler code here and/or call defaultm_MousePush=FALSE;this-Invalidate();/刷新(控件)窗口if(m_CurMouseItem!=-1)/给父窗口发送项被单击消息GetParent()-SendMessage(WM_COMMAND,MAKEWPARAM(m_itemIDm_CurMouseItem,0),LPARAM(GetSafeHwnd();CWnd:OnLButtonUp(nFlags, point);void CMyCustomControl:OnMouseMove(UINT nFlags, CPoint point)if(m_CurMouseItem=-1)SetTimer(m_TimerID,50,NULL);/设置计时器CWnd:OnMouseMove(nFlags, point);void CMyCustomControl:OnPaint()CPaintDC dc(this); / device context for painting/先在内存DC里完成所有要进行的画图操作，然后再把内存DC里的画图（数据）一次性画上去。CDC memDC;memDC.CreateCompatibleDC(&dc);CRect rect;GetClientRect(rect);CBitmap bmp;bmp.CreateCompatibleBitmap(&dc,rect.Width(),rect.Height();memDC.SelectObject(&bmp);if(m_BKID!=NULL) /画位图背景 CDC bmpDC;bmpDC.CreateCompatibleDC(&memDC);CBitmap mBmp;mBmp.LoadBitmap(m_BKID);bmpDC.SelectObject(&mBmp);BITMAP bmpInfo;mBmp.GetBitmap(&bmpInfo);memDC.StretchBlt(0,0,rect.Width(),rect.Height(),&bmpDC,0,0, bmpInfo.bmWidth,bmpInfo.bmHeight,SRCCOPY);int spacing=0;if(m_CurMouseItem!=-1) CDC bmpDC;bmpDC.CreateCompatibleDC(&memDC);CBitmap mBmp;if(m_MousePush)spacing=2;mBmp.LoadBitmap(m_itemMPushID);else mBmp.LoadBitmap(m_itemMOverID);bmpDC.SelectObject(&mBmp);BITMAP bmpInfo;mBmp.GetBitmap(&bmpInfo);memDC.StretchBlt(m_itemRectm_CurMouseItem.left,m_itemRectm_CurMouseItem.top,m_itemRectm_CurMouseItem.Width(),m_itemRectm_CurMouseItem.Height(),&bmpDC,0,0,bmpInfo.bmWidth,bmpInfo.bmHeight,SRCCOPY);for(int i=0;iDraw(&memDC,i,pt,ILD_NORMAL);dc.BitBlt(0,0,rect.Width(),rect.Height(),&memDC,0,0,SRCCOPY);/ TODO: Add your message handler code herevoid CMyCustomControl:OnTimer(UINT nIDEvent)int oldMouseItem=m_CurMouseItem;/ TODO: Add your message handler code here and/or call defaultPOINT pt;:GetCursorPos(&pt);/获取鼠标当前位置ScreenToClient(&pt);/转换成相对于客户区坐标/判断当前鼠标是否在某一个项上for(m_CurMouseItem=0;m_CurMouseItemInvalidate();else if(m_CurMouseItem!=oldMouseItem)/鼠标位置所在项已改变this-Invalidate();CWnd:OnTimer(nIDEvent);BOOL CMyCustomControl:AddItem(UINT nID)if(m_itemCount=10) return FALSE;/增加项超过10个m_itemIDm_itemCount=nID;/计算设置各项区域位置if(m_itemCount=0)m_itemRect0=CRect:CRect(m_itemSpacing,m_itemSpacing, m_itemWidth+m_itemSpacing,m_itemHeight+m_itemSpacing);elsem_itemRectm_itemCount.left=m_itemRectm_itemCount-1.right+m_itemSpacing;m_itemRectm_itemCount.top=m_itemSpacing;m_itemRectm_itemCount.right=m_itemRectm_itemCount.left+m_itemWidth;m_itemRectm_itemCount.bottom=m_itemSpacing+m_itemHeight;/根据当前项信息调整控件窗口大小，位置。MoveWindow(0,0,m_itemRectm_itemCount.right+m_itemSpacing, m_itemRectm_itemCount.bottom+m_itemSpacing);m_itemCount+;/项数量增一return TRUE;/设置控件背景位图ID，项状态位图背景ID(鼠标停留，单击）void CMyCustomControl:SetBitmapIDs(UINT BKID, UINT itemMOverID, UINT itemMPushID)m_BKID=BKID;m_itemMOverID=itemMOverID;m_itemMPushID=itemMPushID;BOOL CMyCustomControl:SetImageList(CImageList *pImageList)/设置图像列表if(m_pImageList!=NULL) return FALSE;m_pImageList=pImageList;retu