hi,
i'm developing a code, which is given below, using opencv with MFC in vs2008. the code builds fine and after debugging two separate windows open, one containing image while other containing static boxes. now the problem is
when i double click on the image window (which is the mouse event) i don't get the (x,y) coordinates of image in my static boxes (which is in the separate window).
#include "stdafx.h"
#include "opencv01.h"
#include "opencv01Dlg.h"
#include "highgui.h"
#include "afxwin.h"
#include "cv.h"
#include "math.h"
#include<stdlib.h>
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
void on_mouse( int evt, int x, int y, int flags, void* param ); //defining mouse event
HWND hwnd; //defining handle
class CAboutDlg : public CDialog
{
public:
CAboutDlg();
enum { IDD = IDD_ABOUTBOX };
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
protected:
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
END_MESSAGE_MAP()
Copencv01Dlg::Copencv01Dlg(CWnd* pParent /*=NULL*/)
: CDialog(Copencv01Dlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void Copencv01Dlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(Copencv01Dlg, CDialog)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// Copencv01Dlg message handlers
BOOL Copencv01Dlg::OnInitDialog()
{
CDialog::OnInitDialog();
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);
}
}
SetIcon(m_hIcon, TRUE); // Set big icon
SetIcon(m_hIcon, FALSE); // Set small icon
AfxBeginThread(MyThreadProc, this); //calling thread
return TRUE; // return TRUE unless you set the focus to a control
}
UINT Copencv01Dlg::MyThreadProc(LPVOID pParam)
{
Copencv01Dlg * me = (Copencv01Dlg *)pParam;
me->MyThreadProc();
return TRUE;
}
void Copencv01Dlg::MyThreadProc()
{
//image initialization
IplImage* img = cvLoadImage("box.png", CV_WINDOW_AUTOSIZE);
cvNamedWindow("map", 0);
cvShowImage("map", img);
cvSetMouseCallback("map", on_mouse, NULL); //calling mouse function
cvWaitKey(0);
cvReleaseImage(&img);
cvDestroyWindow("map");
}
void Copencv01Dlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
void Copencv01Dlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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();
}
}
HCURSOR Copencv01Dlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
void on_mouse( int evt, int x, int y, int flags, void* param )
{
CString xaxis, yaxis;
if (evt == CV_EVENT_LBUTTONDBLCLK)
{
xaxis.Format(_T("%d"), x);
yaxis.Format(_T("%d"), y);
SetDlgItemText(hwnd, IDC_Blue, xaxis);
SetDlgItemText(hwnd, IDC_Green, yaxis);
}
}
