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zhenghao1/BoxDlg.cpp

Created February 27, 2014 19:15
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  1. zhenghao1 created this gist Feb 27, 2014.
    87 changes: 87 additions & 0 deletions BoxDlg.cpp
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    // BoxDlg.cpp : implementation file
    //

    #include "stdafx.h"
    #include "Box.h"
    #include "BoxDlg.h"

    #ifdef _DEBUG
    #define new DEBUG_NEW
    #endif

    // CBoxDlg dialog
    CBoxDlg::CBoxDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CBoxDlg::IDD, pParent)
    {
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
    }

    void CBoxDlg::DoDataExchange(CDataExchange* pDX)
    {
    CDialog::DoDataExchange(pDX);
    DDX_Control(pDX, IDC_COMBO1, m_combo);
    }

    BEGIN_MESSAGE_MAP(CBoxDlg, CDialog)
    ON_WM_PAINT()
    ON_WM_QUERYDRAGICON()
    //}}AFX_MSG_MAP
    END_MESSAGE_MAP()

    // CBoxDlg message handlers

    BOOL CBoxDlg::OnInitDialog()
    {
    CDialog::OnInitDialog();

    // 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
    m_combo.Init();
    m_combo.AddItem("Introducing uppercuts crisps!");
    m_combo.AddItem("Today is a good day to go to Orchard Road for shopping");
    m_combo.AddItem("Finely sliced potato chips, delicately seasoned with the most authentic.");
    m_combo.AddItem("192.0.2.123/16 is online. Please disconnect the device");
    m_combo.SetCurSel(0);
    return TRUE; // return TRUE unless you set the focus to a control
    }

    // 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.

    void CBoxDlg::OnPaint()
    {
    if (IsIconic())
    {
    CPaintDC dc(this); // device context for painting

    SendMessage(WM_ICONERASEBKGND, reinterpret_cast(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() - cxIcon + 1) / 2;
    int y = (rect.Height() - cyIcon + 1) / 2;

    // Draw the icon
    dc.DrawIcon(x, y, m_hIcon);
    }
    else
    {
    CDialog::OnPaint();
    }
    }

    // The system calls this function to obtain the
    // cursor to display while the user drags
    // the minimized window.
    HCURSOR CBoxDlg::OnQueryDragIcon()
    {
    return static_cast(m_hIcon);
    }
    28 changes: 28 additions & 0 deletions BoxDlg.h
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    #pragma once
    #include "mybox.h"
    #include "afxwin.h"

    // CBoxDlg dialog
    class CBoxDlg : public CDialog
    {
    // Construction
    public:
    CBoxDlg(CWnd* pParent = NULL); // standard constructor

    // Dialog Data
    enum { IDD = IDD_BOX_DIALOG };

    protected:
    virtual void DoDataExchange(CDataExchange* pDX);

    // Implementation
    protected:
    HICON m_hIcon;
    CMyBox m_combo;

    // Generated message map functions
    virtual BOOL OnInitDialog();
    afx_msg void OnPaint();
    afx_msg HCURSOR OnQueryDragIcon();
    DECLARE_MESSAGE_MAP()
    };
    117 changes: 117 additions & 0 deletions MyBox.cpp
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    // ODrawCombo.cpp : implementation file
    //

    #include "stdafx.h"
    #include "mybox.h"

    // CMyBox

    IMPLEMENT_DYNAMIC(CMyBox, CComboBox)
    CMyBox::CMyBox()
    {
    }

    CMyBox::~CMyBox()
    {
    }

    BEGIN_MESSAGE_MAP(CMyBox, CComboBox)
    END_MESSAGE_MAP()

    // CMyBox message handlers

    void CMyBox::Init()
    {
    }

    void CMyBox::AddItem(CString nItem)
    {
    this->AddString(nItem);
    }

    void CMyBox::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
    {
    ASSERT(lpDrawItemStruct->CtlType == ODT_COMBOBOX);
    if(lpDrawItemStruct->itemID != 0xffffffff)
    {
    // 1 - Get combobox item ID
    UINT id = (UINT) (WORD) lpDrawItemStruct->itemID;

    // Consistency checks
    ASSERT(id == lpDrawItemStruct->itemID);

    // 2 - Get device context & item rectangle
    CDC dc;
    dc.Attach(lpDrawItemStruct->hDC);

    CRect rcItem = lpDrawItemStruct->rcItem;
    int nCurrentX = rcItem.left;

    // 3 - Select background and foreground
    // colors depending on item selected state
    COLORREF crBack, crFore;
    if(lpDrawItemStruct->itemState & ODS_SELECTED)
    {
    crBack = ::GetSysColor(COLOR_HIGHLIGHT);
    crFore = ::GetSysColor(COLOR_HIGHLIGHTTEXT);
    }
    else
    {
    crBack = ::GetSysColor(COLOR_WINDOW);
    crFore = ::GetSysColor(COLOR_WINDOWTEXT);
    }

    // 4 - Fill item background
    CRect rcBack(nCurrentX, rcItem.top, rcItem.right, rcItem.bottom);
    CBrush brFill(crBack);
    dc.FillRect(&rcBack, &brFill);

    // 5 - Draw item color rectangle
    CBrush brColor(::GetSysColor(COLOR_WINDOWTEXT));
    CBrush* pOldBrush = dc.SelectObject(&brColor);
    CRect rcColor(nCurrentX, rcItem.top, nCurrentX, rcItem.bottom);
    dc.Rectangle(rcColor);
    dc.SelectObject(pOldBrush);

    // 6 - Draw item text
    COLORREF crOldTextColor = dc.SetTextColor(crFore);
    int nOldBkMode = dc.SetBkMode(TRANSPARENT);
    CString str;
    this->GetLBText(id, str);
    dc.DrawText(str, -1, rcItem, DT_LEFT|DT_WORDBREAK);
    dc.SetTextColor(crOldTextColor);
    dc.SetBkMode(nOldBkMode);
    dc.Detach();
    }
    }

    void CMyBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
    {
    /*DWORD dwStyle = ::GetWindowLong( m_hWnd, GWL_STYLE );*/
    /*ASSERT( dwStyle & CBS_DROPDOWNLIST );*/

    CFont* pFont = GetFont();
    CFont* pOldFont = 0;
    CString str;
    CDC* pDC = GetDC();
    pOldFont = pDC->SelectObject(pFont);

    // Get text from combo box
    this->GetLBText(lpMeasureItemStruct->itemID, str);

    // Obtain rectangle that text is originally in
    CRect rc;
    GetClientRect(&rc);
    //GetWindowRect(&rc);
    rc.left = 0;
    rc.top = 0;
    rc.bottom = 0;

    // With the inclusion of DT_CALCRECT
    // this DrawText does not draw the text
    // it just measures the rectangle
    pDC->DrawText(str, str.GetLength(), &rc, DT_CALCRECT|DT_LEFT|DT_WORDBREAK);
    lpMeasureItemStruct->itemHeight = rc.bottom;
    pDC->SelectObject(pOldFont);
    ReleaseDC(pDC);
    }
    18 changes: 18 additions & 0 deletions MyBox.h
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    #pragma once

    // CMyBox
    class CMyBox : public CComboBox
    {
    DECLARE_DYNAMIC(CMyBox)

    public:
    CMyBox();
    virtual ~CMyBox();
    void Init();
    void AddItem(CString nItem);
    virtual void DrawItem(LPDRAWITEMSTRUCT);
    virtual void MeasureItem(LPMEASUREITEMSTRUCT);

    protected:
    DECLARE_MESSAGE_MAP()
    };