If you want to get All Class Name, Window title on Operation System. You can easy do it by using EnumWindows API, Now let's take a look
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BOOL WINAPI EnumWindows(
_In_ WNDENUMPROC lpEnumFunc,
_In_ LPARAM lParam
);
Parameters
- lpEnumFunc [in]
- Type: WNDENUMPROC
A pointer to an application-defined callback function. For more information, see EnumWindowsProc.
- lParam [in]
- Type: LPARAM
An application-defined value to be passed to the callback function.
Return value
Type:Type: BOOL
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError
.
If EnumWindowsProc returns zero, the return value is also zero. In this case, the callback function should call SetLastError to obtain a meaningful error code to be returned to the caller of EnumWindows.
Remarks
The EnumWindows function does not enumerate child windows, with the exception of a few top-level windows owned by the system that have the WS_CHILD style.This function is more reliable than calling the GetWindow function in a loop. An application that calls GetWindow to perform this task risks being caught in an infinite loop or referencing a handle to a window that has been destroyed.
Note: For Windows 8 and later, EnumWindows enumerates only top-level windows of desktop apps.
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Using GetClassName and GetWindowText for get Class and Window title
::GetClassName (HWND, class_name, sizeof (class_name));
::GetWindowText(HWND, Title, sizeof(Title));
Using w-chart_t for define string in unicode mode
wchar_tUsing EnumWindowsProc and EnumsWindows function
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam);
void CDemoDlg::OnBnClickedOk()
{
// TODO: Add your control notification handler code here
EnumWindows(EnumWindowsProc, NULL);
CDialogEx::OnOK();
}
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
wchar_t class_name[80];
wchar_t title[80];
::GetClassName(hwnd, class_name, sizeof(class_name));
::GetWindowText(hwnd, title, sizeof(title));
CString szMsg = L"";
szMsg.Format(L"class name = %s - title = %s", class_name, title);
AfxMessageBox(szMsg);
return TRUE;
}Source code
/******************************************************
Developer: Zidane (huuvi168@gmail.com)
Last Modified: 2015-09-01
******************************************************/
// DemoDlg.cpp : implementation file
//
#include "stdafx.h"
#include "Demo.h"
#include "DemoDlg.h"
#include "afxdialogex.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#endif
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialogEx
{
public:
CAboutDlg();
// Dialog Data
enum { IDD = IDD_ABOUTBOX };
protected:
virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support
// Implementation
protected:
DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()
// CDemoDlg dialog
CDemoDlg::CDemoDlg(CWnd* pParent /*=NULL*/)
: CDialogEx(CDemoDlg::IDD, pParent)
{
m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CDemoDlg::DoDataExchange(CDataExchange* pDX)
{
CDialogEx::DoDataExchange(pDX);
}
BEGIN_MESSAGE_MAP(CDemoDlg, CDialogEx)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
ON_BN_CLICKED(IDOK, &CDemoDlg::OnBnClickedOk)
END_MESSAGE_MAP()
// CDemoDlg message handlers
BOOL CDemoDlg::OnInitDialog()
{
CDialogEx::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)
{
BOOL bNameValid;
CString strAboutMenu;
bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);
ASSERT(bNameValid);
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
return TRUE; // return TRUE unless you set the focus to a control
}
void CDemoDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialogEx::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 CDemoDlg::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
{
CDialogEx::OnPaint();
}
}
// The system calls this function to obtain the cursor to display while the user drags
// the minimized window.
HCURSOR CDemoDlg::OnQueryDragIcon()
{
return static_cast<HCURSOR>(m_hIcon);
}
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam);
void CDemoDlg::OnBnClickedOk()
{
// TODO: Add your control notification handler code here
EnumWindows(EnumWindowsProc, NULL);
CDialogEx::OnOK();
}
BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
{
wchar_t class_name[80];
wchar_t title[80];
::GetClassName(hwnd, class_name, sizeof(class_name));
::GetWindowText(hwnd, title, sizeof(title));
CString szMsg = L"";
szMsg.Format(L"class name = %s - title = %s", class_name, title);
AfxMessageBox(szMsg);
return TRUE;
}
Result
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