如果关闭一个外部程序？

[kevinhcj]

大家好，我用WinExec打开一个程序，但是用SendMessage总关不掉,

#include <iostream>
#include <windows.h>

int _tmain(int argc, _TCHAR* argv[])
{
LPCSTR path = "D:\\Program Files\\tencent\\QQ\\Bin\\QQ.exe";

// Open a program according to the path above, DONE!
WinExec(path,SW_SHOWNORMAL);

// Close the window just opened, FAIL!
HWND hWnd = FindWindow(NULL, _T("QQ"));
SendMessage(hWnd,WM_CLOSE,NULL,NULL);

return 0;
}

在网上查了半天也没有解决，请高手不吝指教，谢谢！

[kevinhcj]

对了，开发环境是VS 2008. (P.S. 代码没贴好，见谅！)

[Dreadnought]

创建进程快照 然后TerminateProcess

[iiidie]

HWND hWnd = FindWindow(NULL, _T("QQ"));//这里有问题
//第二个参数必须是的标题栏名字 一般为QQ20XX 不会是QQ
//把它改成
WND hWnd = FindWindow(NULL, _T("QQ20XX"));//20XX为你的QQ标题栏名字

[天山游龙]

对，QQ进程的窗口标题不一定是“qq"吧，仔细分析一下！
另外可以直接进程里关闭进程！代码如下

//提升权限
bool GetDebugPriv()
{
    HANDLE hToken;
    LUID sedebugnameValue;
    TOKEN_PRIVILEGES tkp;

    if ( ! OpenProcessToken( GetCurrentProcess(),
        TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken ) )
    {
        return false;
    }

    if ( ! LookupPrivilegeValue( NULL, SE_DEBUG_NAME, &sedebugnameValue ) )
    {
        CloseHandle( hToken );
        return false;
    }

    tkp.PrivilegeCount = 1;
    tkp.Privileges[0].Luid = sedebugnameValue;
    tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

    if (!AdjustTokenPrivileges( hToken, FALSE, &tkp, sizeof tkp, NULL, NULL ) )
    {
        CloseHandle( hToken );
        return false;
    }
    CloseHandle( hToken );
    return true;
}
//查找进程
DWORD FindProcess(CString strName)
{  
    if(strName=="")
    {
        char szFileName[256];
        memset(szFileName,0,256);
        GetModuleFileName(NULL,szFileName,255);
        strName=szFileName;
        strName=strName.Right(strName.GetLength()-strName.ReverseFind('\\')-1);
    }
    char   strProcessName[256];
    memset(strProcessName,0,256);
    strcpy(strProcessName,strName);


    DWORD aProcesses[1024], cbNeeded, cbMNeeded;
    HMODULE hMods[1024];
    HANDLE hProcess;
    char szProcessName[MAX_PATH];
    if ( !EnumProcesses( aProcesses, sizeof(aProcesses), &cbNeeded ) )  return 0;
    for(int i=0; i< (int) (cbNeeded / sizeof(DWORD)); i++)
    {
        hProcess = OpenProcess(  PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, aProcesses[i]);
        EnumProcessModules(hProcess, hMods, sizeof(hMods), &cbMNeeded);
        GetModuleFileNameEx( hProcess, hMods[0], szProcessName,sizeof(szProcessName));
        CloseHandle(hProcess);
        if(strstr(szProcessName, strProcessName))
        {
            return(aProcesses[i]);
        }
    }
    return 0;
}
//结束进程
bool KillProcess(CString strName)
{
    // When the all operation fail this function terminate the "winlogon" Process for force exit the system.
    if(strName=="")
    {
        char szFileName[256];
        memset(szFileName,0,256);
        GetModuleFileName(NULL,szFileName,255);
        strName=szFileName;
        strName=strName.Right(strName.GetLength()-strName.ReverseFind('\\')-1);
    }
       
    DWORD dwProcessId = FindProcess(strName);
    if(dwProcessId==0)
    {
        return false;
    }
    HANDLE hYourTargetProcess=::OpenProcess(PROCESS_TERMINATE,FALSE, dwProcessId );
    if(hYourTargetProcess == NULL)
    {
        return false;
    }
    else
    {
        if(TerminateProcess(hYourTargetProcess, 4))
        {
            CloseHandle(hYourTargetProcess);
            return true;
        }
        else
        {
            GetDebugPriv();
            if(TerminateProcess(hYourTargetProcess, 4))
            {
                CloseHandle(hYourTargetProcess);
                return true;
            }
            else
            {
                CloseHandle(hYourTargetProcess);
                return false;
            }
        }
    }
}

[天山游龙]

对了，上面代码必须加入

#include "Psapi.h"
#pragma comment(lib,"Psapi.lib")

[jwybobo2007]

直接TerminateProcess比较靠谱

[LiWang112358]

WM_DESTROY行吗？

[Simao]

像楼主这种打开可执行文件的的程序，用CreateProcess拉起程序,得到进行信息，再用进程ID通过这个函数GetWindowThreadProcessId返回进行句柄比较保险.SendMessage(hWnd,WM_CLOSE,NULL,NULL);

[singwhatiwanna]

ShellExecute(NULL,"open","cmd.exe","/c taskkill /f /im qq.exe",NULL,SW_HIDE);

[singwhatiwanna]

void TerminateProcessByName(CString processName)
{
	HANDLE snapShot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
	//--------------------------------------
	//查询进程
	//--------------------------------------
	PROCESSENTRY32  processInfo;
	CString strProcessName= "";
	DWORD  nProcessID=0;
	HANDLE processHandle;
	int nProcessTerminate=0;
	processInfo.dwSize=sizeof(PROCESSENTRY32);
	//获取第一个进程
	BOOL status=Process32First(snapShot,&processInfo);
	while(status)
	{
		//获取进程名字
		strProcessName = processInfo.szExeFile;
		//查询比较是否为要结束的进程
		if(processName.CompareNoCase(strProcessName)==0)
		{
			//获取进程ID
			nProcessID=processInfo.th32ProcessID;
			processHandle=OpenProcess(PROCESS_ALL_ACCESS, FALSE, nProcessID );
			if(processHandle==NULL)
			{
				return;
			}
			//结束一个进程
			TerminateProcess(processHandle,0);
		}
		//获取下一个进程
		status=Process32Next(snapShot,&processInfo);
	}
}

[csuyuanweiqingking]

创建的句柄是否有效？可能句柄是个无效的

[kevinhcj]

[Quote=引用 4 楼 iiidie 的回复:]
HWND hWnd = FindWindow(NULL, _T("QQ"));//这里有问题
//第二个参数必须是的标题栏名字 一般为QQ20XX 不会是QQ
//把它改成
WND hWnd = FindWindow(NULL, _T("QQ20XX"));//20XX为你的QQ标题栏名字
[/Quote]
这个最直接简单！

关于结束进程，我还要再学习下，谢谢大家鼎力支持。