枚举当前打开的所有窗口 - 王朝网络宽屏版

一、原理

其原理是利用GetWindowLong(hWnd,GWL_STYLE)& WS_VISIBLE对打开的窗口进行查找，并将窗口的句柄存放在一个HWND的数组中，结合EnumWindows进行窗口的枚举，从而得到响应的窗口名称；

二、主要函数介绍：

BOOL EnumWindows(

WNDENUMPROC lpEnumFunc, // callback function

LPARAM lParam // application-defined value

);

LONG GetWindowLong(

HWND hWnd, // handle to window

int nIndex // offset of value to retrieve

);

详细资料请查看MSDN；

在此我定义了一个过程EnumWindowsProc，通过GetWindowLong来完成对打开程序窗口的枚举；通过ListBox实现程序的列举；并将每次调用的枚举结果存放在/info目录下当天日期为文件名称的.txt文件里；

四、主要实现代码：

初始化部分（全局）：

HWND hwnd;

HWND m_hwndFind[100] = { NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,

NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,

NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL};

int m_num = 0 ;

TCHAR m_store[MAX_PATH];

TCHAR m_name[MAX_PATH];

TCHAR m_strClass[MAX_PATH];

TCHAR m_FilePath[MAX_PATH];

TCHAR m_FileName[24];

枚举处理的代码：

CTime year,day,month,hour,minute,second;

CStdioFile fp;

CTime current = CTime::GetCurrentTime();

year = current.GetYear();

month = current.GetMonth();

day = current.GetDay();

sprintf(m_FileName,"%4d%02d%02d.txt",year,month,day);

::GetModuleFileName(NULL,m_FilePath,MAX_PATH);

(_tcsrchr(m_FilePath,'\\'))[1] = 0;

//sprintf(m_FileName,"info%d.txt",rand());

strcat(m_FilePath,"info\\");

try

{

::CreateDirectory(m_FilePath,NULL);

}

catch(...)

{}

try

{

::SetCurrentDirectory(m_FilePath);

}

catch(...)

{}

strcat(m_FilePath,m_FileName);

if((fp.Open(m_FilePath,CFile::modeCreate | CFile::modeNoTruncate | CFile::modeReadWrite))==0)

return;

CButton *button = (CButton*)GetDlgItem(IDC_BTN_START);

if(button)

{

button->EnableWindow(FALSE);

}

//enable RESET button

CButton *button2 = (CButton *)GetDlgItem(IDC_BTN_RESET);

if(button2)

{

button2->EnableWindow(TRUE);

}

//enumerate windows by EnumWindowProc function

::EnumWindows(CEmuteWindowsDlg::EnumWindowsProc,NULL);

//add the title of the window in ListBox

for(int i = 0;i <=m_num;i++)

{

HWND m_wnd = m_hwndFind[i];

::GetWindowText(m_wnd,m_store,128);

::GetClassName(m_wnd,m_strClass,MAX_PATH-1);

/* if(!lstrcmpi(m_strClass, _T("Notepad")))

::PostMessage(m_wnd,WM_CLOSE,0,0);*/

HWND hWnd;

UINT nIdFirst;

TCHAR szBuf[MAX_PATH];

hWnd=::GetWindow(m_wnd,GW_CHILD);

if(hWnd == NULL || !::IsWindow(hWnd))

return ;

nIdFirst=::GetDlgCtrlID(hWnd);

{

GetClassName(hWnd,szBuf,MAX_PATH);

//etc

hWnd=::GetWindow(hWnd,GW_HWNDNEXT);

if(!::IsWindow(hWnd) || hWnd==NULL)

break;

}while(nIdFirst != ::GetDlgCtrlID(hWnd));

sprintf(m_name,"(%d)标题名称：",i);

strcat(m_name,m_store);

strcat(m_name," 类名称：");

strcat(m_name,m_strClass);

m_strList.AddString(m_name);

fp.SeekToEnd();

fp.WriteString(m_name);

fp.WriteString("\n");

}

fp.SeekToEnd();

fp.WriteString("\n\n");

hour = current.GetHour();

minute=current.GetMinute();

second = current.GetSecond();

sprintf(m_FilePath,"********************%02d时%02d分%02d秒写入***********************",hour,minute,second);

fp.WriteString(m_FilePath);

fp.WriteString("\n\n");

fp.Close();

重新枚举处理：

CButton *button = (CButton *)GetDlgItem(IDC_BTN_START);

if(button)

{

button->EnableWindow(TRUE);

}

//disable RESET button

CButton *button2 = (CButton *)GetDlgItem(IDC_BTN_RESET);

if(button2)

{

button2->EnableWindow(FALSE);

}

m_strList.ResetContent();//reset the ListBox content

m_num = 0;//reset the count

枚举窗口句柄的函数：

在头文件中声明为：

static BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam);

实现部分：

BOOL CEmuteWindowsDlg::EnumWindowsProc(HWND hWnd, LPARAM lParam)

{

//be sure the current window is visible

if(::GetWindowLong(hWnd,GWL_STYLE)& WS_VISIBLE)

{

m_hwndFind[m_num] = hWnd;//record the HWND handle into array

m_num++;//count start

}

return 1;

}

调试环境：

win2000 adv server + vc6.0 + vsp5.0