VC實現圖片拖拽及動畫的實例

2020-01-26 15:55:30

字體：大中小

來源：轉載

供稿：網友

基礎知識
1.PictureBox控件的使用
2.加載位圖文件

1.通過文件路徑獲得位圖句柄

//獲得位圖句柄  
void CMovePictureDlg::GetHandleFromPath(CString path)  
{  
    hBitmap= (HBITMAP)::LoadImage(AfxGetInstanceHandle(),path,IMAGE_BITMAP,0,0,LR_CREATEDIBSECTION|LR_LOADFROMFILE);//創建位圖句柄  
} 

2.通過位圖句柄創建位圖對象并獲得位圖信息

復制代碼代碼如下:

//獲取位圖對象  

void CMovePictureDlg::GetBitMap(HBITMAP hBitmap)  

{  

   m_BitMap.Attach(hBitmap);//通過位圖句柄創建位圖對象  

    //獲取圖像信息  

    BITMAPINFOHEADER bminfo;   

    m_BitMap.GetObject(sizeof(bminfo),&bminfo);   

//獲取位圖寬高  

    m_nBmpWidth=bminfo.biWidth;  

    m_nBmpHeight=bminfo.biHeight;  

}

實現步驟：
1.創建一個對話框工程命名為MovePicture
2.打開對話框資源拖入一個PictureBox控件，設置ID為：IDC_PICTUREBOX，設置類型為：位圖
3.拖入兩個靜態文本控件和兩個編輯框控件，靜態文本控件標題分別為：輸入動量系數：、輸入阻力系數：，編輯框ID分別為：IDC_EDITDV、IDC_EDITF，為IDC_EDITDV關聯變量為：m_editDV,為IDC_EDITF關聯變量為：m_editF
4.實現代碼
頭文件

復制代碼代碼如下:

// MovePictureDlg.h : header file  
//  
#include "PictureBox.h"  

#if !defined(AFX_MOVEPICTUREDLG_H__6FFC1DDF_478C_43D6_B854_4D51E98D5E50__INCLUDED_) 
#define AFX_MOVEPICTUREDLG_H__6FFC1DDF_478C_43D6_B854_4D51E98D5E50__INCLUDED_ 

#if _MSC_VER > 1000  
#pragma once  
#endif // _MSC_VER > 1000  

/////////////////////////////////////////////////////////////////////////////  
// CMovePictureDlg dialog  

class CMovePictureDlg : public CDialog  
{  
// Construction  
public:  
    void GetBitMap(HBITMAP hBitmap);  
    void GetHandleFromPath(CString path);  
    void SetPicRect(int x,int y);  
    void SetSysPath();  
    CMovePictureDlg(CWnd* pParent = NULL);  // standard constructor  

// Dialog Data  
    //{{AFX_DATA(CMovePictureDlg)  
    enum { IDD = IDD_MOVEPICTURE_DIALOG };  
    CEdit   m_editF;  
    CEdit   m_editDV;  
    //}}AFX_DATA  

    // ClassWizard generated virtual function overrides  
    //{{AFX_VIRTUAL(CMovePictureDlg)  
    protected:  
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support  
    //}}AFX_VIRTUAL  

// Implementation  
protected:  
    HICON m_hIcon;  

    // Generated message map functions  
    //{{AFX_MSG(CMovePictureDlg)  
    virtual BOOL OnInitDialog();  
    afx_msg void OnSysCommand(UINT nID, LPARAM lParam);  
    afx_msg void OnPaint();  
    afx_msg HCURSOR OnQueryDragIcon();  
    afx_msg void OnLButtonDown(UINT nFlags, CPoint point);  
    afx_msg void OnMouseMove(UINT nFlags, CPoint point);  
    afx_msg void OnLButtonUp(UINT nFlags, CPoint point);  
    afx_msg void OnTimer(UINT nIDEvent);  
    afx_msg void OnDestroy();  
    //}}AFX_MSG  
    DECLARE_MESSAGE_MAP()  
private:  
    CString sysPath;//保存系統路徑  
    CString bmpPath;//位圖路徑  

    HBITMAP hBitmap;//位圖句柄  
    CBitmap m_BitMap;//位圖對象  
    int m_nBmpWidth;//位圖寬度  
    int m_nBmpHeight;//位圖高度  

    CPictureBox* pictureBox;//圖片控件  
    CRect picRect;//控件所占區域  
    BOOL isSelect;//判斷控件是否被選中  

    BOOL isDown;//判斷鼠標是否按下  

    CPoint oldPoint;//鼠標原始位置  

    CPoint startPoint;//移動起始位置  

    SYSTEMTIME startTime;//開始時間  
    SYSTEMTIME endTime;//結束時間  

    double vx;//x方向速度  
    double vy;//y方向速度  

    double f;//阻力  
    double dv;//動力增量  

    CRect clientRect;//客戶區域  
};  

//{{AFX_INSERT_LOCATION}}  
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.  

#endif // !defined(AFX_MOVEPICTUREDLG_H__6FFC1DDF_478C_43D6_B854_4D51E98D5E50__INCLUDED_) 

實現文件

復制代碼代碼如下:

// MovePictureDlg.cpp : implementation file
//

#include "stdafx.h"
#include "MovePicture.h"
#include "MovePictureDlg.h"
#include <math.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About

//計算時間差
inline   __int64   TimeDiff(SYSTEMTIME left,SYSTEMTIME right)
{
    CTime   tmLeft(left.wYear,left.wMonth,left.wDay,0,0,0);
    CTime   tmRight(left.wYear,left.wMonth,left.wDay,0,0,0);
    CTimeSpan   sp;
    sp   =   tmLeft   -   tmRight;//計算日期比較麻煩，就交給MFC去做吧
    long   lLMinllis   =   (left.wHour*3600   +   left.wMinute*60   +   left.wSecond)*1000   +   left.wMilliseconds;
    long   lRMinllis   =   (right.wHour*3600   +   right.wMinute*60   +   right.wSecond)*1000   +   right.wMilliseconds;

    return   (__int64)sp.GetDays()*86400000   +   (lLMinllis   -   lRMinllis);
}

class CAboutDlg : public CDialog
{
public:
    CAboutDlg();

// Dialog Data
    //{{AFX_DATA(CAboutDlg)
    enum { IDD = IDD_ABOUTBOX };
    //}}AFX_DATA

    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(CAboutDlg)
    protected:
    virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
    //}}AFX_VIRTUAL

// Implementation
protected:
    //{{AFX_MSG(CAboutDlg)
    //}}AFX_MSG
    DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
    //{{AFX_DATA_INIT(CAboutDlg)
    //}}AFX_DATA_INIT
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CAboutDlg)
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
    //{{AFX_MSG_MAP(CAboutDlg)
        // No message handlers
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMovePictureDlg dialog

CMovePictureDlg::CMovePictureDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CMovePictureDlg::IDD, pParent)
{
    //{{AFX_DATA_INIT(CMovePictureDlg)
    //}}AFX_DATA_INIT
    // Note that LoadIcon does not require a subsequent DestroyIcon in Win32
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);

    isDown = FALSE;//初始化鼠標按下狀態
    isSelect = FALSE;//初始化選中狀態
    f = 0.05;//初始化阻力
    dv = 5;//初始化動力增量
}

void CMovePictureDlg::DoDataExchange(CDataExchange* pDX)
{
    CDialog::DoDataExchange(pDX);
    //{{AFX_DATA_MAP(CMovePictureDlg)
    DDX_Control(pDX, IDC_EDITF, m_editF);
    DDX_Control(pDX, IDC_EDITDV, m_editDV);
    //}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CMovePictureDlg, CDialog)
    //{{AFX_MSG_MAP(CMovePictureDlg)
    ON_WM_SYSCOMMAND()
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    ON_WM_LBUTTONDOWN()
    ON_WM_MOUSEMOVE()
    ON_WM_LBUTTONUP()
    ON_WM_TIMER()
    ON_WM_DESTROY()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMovePictureDlg message handlers

//對話框初始化
BOOL CMovePictureDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    // Add "About…" menu item to system menu.

    // IDM_ABOUTBOX must be in the system command range.
    ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
    ASSERT(IDM_ABOUTBOX < 0xF000);

    CMenu* pSysMenu = GetSystemMenu(FALSE);
    if (pSysMenu != NULL)
    {
        CString strAboutMenu;
        strAboutMenu.LoadString(IDS_ABOUTBOX);
        if (!strAboutMenu.IsEmpty())
        {
            pSysMenu->AppendMenu(MF_SEPARATOR);
            pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
        }
    }

    // Set the icon for this dialog. The framework does this automatically
    // when the application's main window is not a dialog
    SetIcon(m_hIcon, TRUE);         // Set big icon
    SetIcon(m_hIcon, FALSE);        // Set small icon

    // TODO: Add extra initialization here

    pictureBox = (CPictureBox*)GetDlgItem(IDC_PICTUREBOX);//獲得圖片框指針

    SetSysPath();//設置系統路徑

    bmpPath = sysPath+"http://image.bmp";//設置位圖路徑

    GetHandleFromPath(bmpPath);//創建位圖句柄

    GetBitMap(hBitmap);//獲得位圖

    //設置位圖控件區域
    SetPicRect(0,0);

    pictureBox->MoveWindow(picRect);//設置控件位置

    //設置文本框值
    CString strDV,strF;
    strDV.Format("%f",dv);
    strF.Format("%f",f);

    m_editDV.SetWindowText(strDV);
    m_editF.SetWindowText(strF);
    return TRUE; // return TRUE unless you set the focus to a control
}

void CMovePictureDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
    if ((nID & 0xFFF0) == IDM_ABOUTBOX)
    {
        CAboutDlg dlgAbout;
        dlgAbout.DoModal();
    }
    else
    {
        CDialog::OnSysCommand(nID, lParam);
    }
}

// If you add a minimize button to your dialog, you will need the code below
// to draw the icon. For MFC applications using the document/view model,
// this is automatically done for you by the framework.

//重繪函數
void CMovePictureDlg::OnPaint()
{
    if (IsIconic())
    {
        CPaintDC dc(this); // device context for painting

        SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

        // Center icon in client rectangle
        int cxIcon = GetSystemMetrics(SM_CXICON);
        int cyIcon = GetSystemMetrics(SM_CYICON);
        CRect rect;
        GetClientRect(&rect);
        int x = (rect.Width() 亚洲香蕉成人av网站在线观看_欧美精品成人91久久久久久久_久久久久久久久久久亚洲_热久久视久久精品18亚洲精品_国产精自产拍久久久久久_亚洲色图国产精品_91精品国产网站_中文字幕欧美日韩精品_国产精品久久久久久亚洲调教_国产精品久久一区_性夜试看影院91社区_97在线观看视频国产_68精品久久久久久欧美_欧美精品在线观看_国产精品一区二区久久精品_欧美老女人bb