C / C++ / MFC

nilrshkorpe wrote:

Where can I find good samples for Casting in VC++/MFC/Pointers and technique for handeling Windows messages.

Nilesh Korpe wrote:

Which messages I should handel in which class like(CDocument or CView or Cmainframe...)in SDI

shivditya wrote:

yah this is problem,none of events get recognised there

FILE* trial = fopen("Trial.txt","w");

llp00na wrote:

However OnLButtonDown still never gets called

// PilotStudyDlg.h : header file
//

#pragma once
#include "explorer1.h"


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

// Dialog Data
	enum { IDD = IDD_PILOTSTUDY_DIALOG };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support


// Implementation
protected:
	HICON m_hIcon;

	// Generated message map functions
	virtual BOOL OnInitDialog();
	afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
	afx_msg void OnPaint();
	afx_msg HCURSOR OnQueryDragIcon();
	DECLARE_MESSAGE_MAP()
public:
	CExplorer1 m_webBrowser;
	CString urlAddress;
	afx_msg void OnBnClickedButtonGo();
	DECLARE_EVENTSINK_MAP()
	void NavigateComplete2Explorer1(LPDISPATCH pDisp, VARIANT* URL);
	void DocumentCompleteExplorer1(LPDISPATCH pDisp, VARIANT* URL);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
};

// PilotStudyDlg.cpp : implementation file
//

#include "stdafx.h"
#include "PilotStudy.h"
#include "PilotStudyDlg.h"
#include ".\pilotstudydlg.h"

#include <mshtml.h>
#include <mshtmdid.h>

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

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

// Dialog Data
	enum { IDD = IDD_ABOUTBOX };

	protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

// Implementation
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()


// CPilotStudyDlg dialog



CPilotStudyDlg::CPilotStudyDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CPilotStudyDlg::IDD, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
	urlAddress = "www.google.com";
}

void CPilotStudyDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	DDX_Control(pDX, IDC_EXPLORER1, m_webBrowser);
}

BEGIN_MESSAGE_MAP(CPilotStudyDlg, CDialog)
	ON_WM_SYSCOMMAND()
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
	ON_BN_CLICKED(IDC_BUTTON_GO, OnBnClickedButtonGo)
	ON_WM_LBUTTONDOWN()
END_MESSAGE_MAP()


// CPilotStudyDlg message handlers

BOOL CPilotStudyDlg::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
	m_webBrowser.Navigate(urlAddress, NULL, NULL, NULL, NULL);

	return TRUE;  // return TRUE  unless you set the focus to a control
}

void CPilotStudyDlg::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 CPilotStudyDlg::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();
	}
}

// The system calls this function to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CPilotStudyDlg::OnQueryDragIcon()
{
	return static_cast<HCURSOR>(m_hIcon);
}

void CPilotStudyDlg::OnBnClickedButtonGo()
{
	// TODO: Add your control notification handler code here
	// get the new web page from the edit control
	GetDlgItemText(IDC_EDIT_ADDRESS, urlAddress);
	//Or: m_edit.GetWindowText(urlAddress);
	if(urlAddress.GetLength() == 0){
		return; // no string has been entered 
	}
	m_webBrowser.Navigate(urlAddress, NULL, NULL, NULL, NULL);
}
BEGIN_EVENTSINK_MAP(CPilotStudyDlg, CDialog)
	ON_EVENT(CPilotStudyDlg, IDC_EXPLORER1, 252, NavigateComplete2Explorer1, VTS_DISPATCH VTS_PVARIANT)
	ON_EVENT(CPilotStudyDlg, IDC_EXPLORER1, 259, DocumentCompleteExplorer1, VTS_DISPATCH VTS_PVARIANT)
END_EVENTSINK_MAP()

void CPilotStudyDlg::NavigateComplete2Explorer1(LPDISPATCH pDisp, VARIANT* URL)
{
	// TODO: Add your message handler code here
	// get current web page's URL
	CString strURL = m_webBrowser.get_LocationURL();
	// change the edit control text to match the current URL
	SetDlgItemText(IDC_EDIT_ADDRESS, strURL);
}

FILE* trial = fopen("Trial.txt","w");
void CPilotStudyDlg::DocumentCompleteExplorer1(LPDISPATCH pDisp, VARIANT* URL)
{
	if(m_webBrowser.get_ReadyState() != READYSTATE_COMPLETE)
		return; 


}

void CPilotStudyDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
	fprintf(trial, "\nAnything ...");
	// TODO: Add your message handler code here and/or call default
	CDialog::OnLButtonDown(nFlags, point);
}

afx_msg void OnBnClickedButtonGo();

afx_msg void OnLButtonDown(UINT nFlags, CPoint point);