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Store and show Tree struct in a Combobox

, 31 Jul 2002
Store and show Tree struct in Combobox
cwzcombox_demo.zip
cwzcombox_src.zip
testcbx
res
small2.ico
small3.ico
small4.ico
small5.ico
studio18c.BMP
testcbx.ico
testcbx.clw
testcbx.dsp
testcbx.dsw
testcbx.log
// testcbxDlg.cpp : implementation file
//

#include "stdafx.h"
#include "testcbx.h"
#include "testcbxDlg.h"

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


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

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()

/////////////////////////////////////////////////////////////////////////////
// CTestcbxDlg dialog

CTestcbxDlg::CTestcbxDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CTestcbxDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CTestcbxDlg)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CTestcbxDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CTestcbxDlg)
	DDX_Control(pDX, IDC_COMBO, m_comboType);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CTestcbxDlg, CDialog)
	//{{AFX_MSG_MAP(CTestcbxDlg)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CTestcbxDlg message handlers

BOOL CTestcbxDlg::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
	
	int nTypeTYM,nTypeTYC,nTypeTYX;

	HICON hIcon = AfxGetApp()->LoadIcon(IDI_SMALL3);
	nTypeTYM = m_comboType.AddIcon(hIcon);
	::DestroyIcon(hIcon);
	
	hIcon = AfxGetApp()->LoadIcon(IDI_SMALL5);
	nTypeTYC = m_comboType.AddIcon(hIcon);
	::DestroyIcon(hIcon);

	hIcon = AfxGetApp()->LoadIcon(IDI_SMALL4);
	nTypeTYX = m_comboType.AddIcon(hIcon);
	::DestroyIcon(hIcon);

	m_comboType.SetBkGndColor(RGB(244,244,244));
	m_comboType.SetHiLightBkGndColor(RGB(157,206,255));
	m_comboType.SetTextColor(RGB(0,128,255));
	m_comboType.SetHiLightTextColor(RGB(255,255,0));
	m_comboType.SetHiLightFrameColor(RGB(255,0,255));

	WORD wParentIdx1 = m_comboType.AddCTString(nRootIndex,nTypeTYM,"Root 1");
	WORD wParentIdx2 = m_comboType.AddCTString(nRootIndex,nTypeTYM,"Root 2");

	WORD wParentlevel1 = m_comboType.AddCTString(wParentIdx1,nTypeTYC,"Root 1 1st level child");
	WORD wParentlevel2 = m_comboType.AddCTString(wParentIdx1,nTypeTYC,"Root 1 2nd level child");
	WORD wParentlevel3 = m_comboType.AddCTString(wParentIdx1,nTypeTYC,"Root 1 3rd level child");
	WORD wParentlevel4 = m_comboType.AddCTString(wParentIdx1,nTypeTYC,"Root 1 4th level child");

	WORD wParentIdx3 = m_comboType.AddCTString(nRootIndex,nTypeTYM,"Root 3");
	WORD wParentIdx4 = m_comboType.AddCTString(nRootIndex,nTypeTYM,"Root 4");

	m_comboType.AddCTString(wParentIdx4,nTypeTYC,"Root 4 1st level child");
	m_comboType.AddCTString(wParentIdx4,nTypeTYC,"Root 4 2nd level child");

	wParentlevel1 = m_comboType.AddCTString(wParentIdx3,nTypeTYC,"Root 3 1st level child");
	
	m_comboType.AddCTString(wParentlevel1,nTypeTYX,"Root 3 1st level child's 1st level child");
	m_comboType.AddCTString(wParentlevel1,nTypeTYX,"Root 3 1st level child's 2nd level child");
	m_comboType.AddCTString(wParentlevel1,nTypeTYX,"Root 3 1st level child's 3rd level child");

	wParentlevel2 = m_comboType.AddCTString(wParentIdx3,nTypeTYC,"Root 3 2nd level child");
	wParentlevel3 = m_comboType.AddCTString(wParentIdx3,nTypeTYC,"Root 3 3rd level child");

	m_comboType.SetCurSel(0);
//	m_comboType.EnableWindow(FALSE);
	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CTestcbxDlg::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.

void CTestcbxDlg::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() - 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 to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CTestcbxDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

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License

This article, along with any associated source code and files, is licensed under The GNU General Public License (GPLv3)

About the Author

Simon.W
Software Developer (Senior)
China China
I had graduated from HuaZhong University of Science & Technology. Now, I'm working in ZTE.

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