带阴影的类 CShadowWnd 类的头文件及其实现文件的全部细节。 //头文件: if !defined(AFX_SHADOWWND_H__B971A958_59CC_11D2_AC8F_0060084237F6__INCLUDED_) #define AFX_SHADOWWND_H__B971A958_59CC_11D2_AC8F_0060084237F6__INCLUDED_ #if _MSC_VER >= 1000 #pragma once #endif // _MSC_VER >= 1000 // ShadowWnd.h : header file ///////////////////////////////////////////////////////////////////////////// // CShadowWnd window class CShadowWnd : public CWnd { //Construction public: CShadowWnd(); //Attributes public: //Operations public: //Overrides //ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CShadowWnd) public: virtual BOOL Create(const RECT& rect, CWnd* pParentWnd); //}}AFX_VIRTUAL //Implementation public: CString m_sShowText; void ShowReadOnlyText(CString sText); CBrush m_bmpBrush; virtual ~CShadowWnd(); //Generated message map functions protected: //{{AFX_MSG(CShadowWnd) afx_msg void OnNcPaint(); afx_msg void OnPaint(); afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct); //}}AFX_MSG DECLARE_MESSAGE_MAP() }; /////////////////////////////////////////////////////////////////////////// //{{AFX_INSERT_LOCATION}} //Microsoft Developer Studio will insert additional declarations immediately efore the previous line. #endif / !defined(AFX_SHADOWWND_H__B971A958_59CC_11D2_AC8F_0060084237F6__INCLUDED_) //实现文件 } // ShadowWnd.cpp : implementation file // #include "stdafx.h" #include "Shadow.h" #include "ShadowWnd.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif //定义常数 static int aPattern[]={0xAA,0x55,0xAA,0x55,0xAA,0x55,0xAA,0x55};//阴影位图数组 #define SPOPUP_SHADOWWIDTH 10 //阴影宽度 #define SPOPUP_SHADOWHEIGHT 13 //阴影高度 #define MAXWIDTH 400 //显示字符矩形的最大宽度 ///////////////////////////////////////////////////////////////////////////// // CshadowWnd CShadowWnd::CShadowWnd() { CBitmap bmp; bmp.CreateBitmap(8,8,1,1,(void* )aPattern);//创建一个阴影位图 m_bmpBrush.CreatePatternBrush(&bmp); //创建一把阴影刷 } CShadowWnd::~CShadowWnd() { } BEGIN_MESSAGE_MAP(CShadowWnd, CWnd) //{{AFX_MSG_MAP(CShadowWnd) ON_WM_NCPAINT() ON_WM_PAINT() ON_WM_CREATE() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CShadowWnd message handlers BOOL CShadowWnd::Create(const RECT& rect, CWnd* pParentWnd) { // TODO: Add your specialized code here and/or call the base class const char* pClassName=AfxRegisterWndClass(CS_HREDRAW|CS_VREDRAW); return CWnd::CreateEx(WS_EX_STATICEDGE,pClassName, "Shadow window", WS_POPUP, rect.left,rect.top,rect.right,rect.bottom, pParentWnd->GetSafeHwnd(),0,NULL); } void CShadowWnd::OnNcPaint() { // TODO: Add your message handler code here CWindowDC dc(this); CRect rc; GetWindowRect(&rc); rc.right-=rc.left;//width rc.bottom-=rc.top;//height rc.top=0; rc.left=0; m_bmpBrush.UnrealizeObject(); CBrush* OldBrush=dc.SelectObject(&m_bmpBrush); //画底部阴影 dc.PatBlt(rc.left+SPOPUP_SHADOWWIDTH,rc.bottom-SPOPUP_SHADOWHEIGHT, rc.right- SPOPUP_SHADOWWIDTH,SPOPUP_SHADOWHEIGHT,PATCOPY); //画右边阴影 dc.PatBlt(rc.right-SPOPUP_SHADOWWIDTH,rc.top+SPOPUP_SHADOWHEIGHT, SPOPUP_SHADOWWIDTH, rc.bottom,PATCOPY); dc.SelectObject(OldBrush); //restore old brush CBrush* pBrush=CBrush::FromHandle(GetSysColorBrush(COLOR_WINDOWFRAME)); rc.right-=SPOPUP_SHADOWWIDTH; rc.bottom-=SPOPUP_SHADOWHEIGHT; dc.FrameRect(rc,pBrush);//画边框 // Do not call CWnd::OnNcPaint() for painting messages } void CShadowWnd::OnPaint() { CPaintDC dc(this); // device context for painting // TODO: Add your message handler code here CRect rect; GetClientRect(&rect); rect.left+=5; rect.top+=5; rect.right-=SPOPUP_SHADOWWIDTH; rect.bottom-=SPOPUP_SHADOWHEIGHT; dc.SetTextColor(RGB(0,0,255));//设置显示文本颜色 dc.DrawText(m_sShowText,rect,DT_WORDBREAK|DT_NOPREFIX); // Do not call CWnd::OnPaint() for painting messages } void CShadowWnd::ShowReadOnlyText(CString sText) { m_sShowText=sText; //存入显示字符串 CDC dc; dc.CreateDC("DISPLAY",NULL,NULL,NULL); //创建一个显示设备描述表 dc.SelectObject(GetStockObject(SYSTEM_FONT)); //选择字体到设备描述表 CRect rect(0,0,MAXWIDTH,0); //获得待显示的字符串 sText 的实际高度和宽度 dc.DrawText(sText,rect,DT_WORDBREAK|DT_CENTER|DT_CALCRECT|DT_NOPREFIX); //为矩形留些余量 rect.right+=3*SPOPUP_SHADOWWIDTH; rect.bottom+=3*SPOPUP_SHADOWHEIGHT; this->Create(rect,0);//创建窗口 this->ShowWindow(SW_SHOW); //显示窗口 this->UpdateWindow(); //立刻更新窗口 //进入消息循环,获取全部消息,控制整个系统 MSG Msg; BOOL bDone; SetCapture(); bDone=FALSE; while(!bDone) { if(PeekMessage(&Msg,NULL,0,0,PM_REMOVE)) if(Msg.message==WM_KEYDOWN||Msg.message==WM_SYSKEYDOWN|| Msg.message==WM_LBUTTONDOWN||Msg.message==WM_RBUTTONDOWN) bDone=TRUE; else { TranslateMessage(&Msg); DispatchMessage(&Msg); } } ReleaseCapture(); DestroyWindow(); } int CShadowWnd::OnCreate(LPCREATESTRUCT lpCreateStruct) { if (CWnd::OnCreate(lpCreateStruct) == -1) return -1; // TODO: Add your specialized creation code here CenterWindow(); return 0; }
使用方法:将该类增加到一个项目文件中;在你欲使用函数的类(一般为视类或框架窗口类)中增加一个成员变量(如:CshadowWnd m_ShadowWnd),当需要使用带阴影的弹出窗口显示信息时,调用成员函数(如:m_ShadowWnd.ShowText(String sText))即可,无须考虑其实现细节。程序在Visual C++ 6.0环境下编译通过。 
说明:本教程来源互联网或网友上传或出版商,仅为学习研究或媒体推广,wanshiok.com不保证资料的完整性。
2/2 首页 上一页 1 2 |