1

我正在尝试启动一个应用程序,然后监视它直到它关闭。我正在使用 ShellExecuteEX 和 GetExitCodeProcess 并且有几个问题。

下面的代码在调用 GetExitCodeProcess 时会导致分段错误。如果我更改 shellInfo.fMask = NULL,它不会出现 seg 错误,但我收到一个错误,提示 Invalid Handle。

Notepad.exe 会启动。

QString executeFile("notepad.exe");

// Conversion QString to LPCTSTR
wchar_t* tempEF = new wchar_t[executeFile.size()+1];
int tempEFTerminator = executeFile.toWCharArray(tempEF);
tempEF[tempEFTerminator] = 0;


LPDWORD exitCode = 0;
SHELLEXECUTEINFO shellInfo;

shellInfo.cbSize = sizeof(SHELLEXECUTEINFO);

shellInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
shellInfo.hwnd = NULL;
shellInfo.lpVerb = NULL;

shellInfo.lpFile = tempEF;

shellInfo.lpParameters = NULL;
shellInfo.lpDirectory = NULL;
shellInfo.nShow = SW_MAXIMIZE;
shellInfo.hInstApp = NULL;

if(ShellExecuteEx(&shellInfo))
{
        if(!GetExitCodeProcess(shellInfo.hProcess, exitCode))
        {
            DWORD lastError = GetLastError();

            LPTSTR lpMsgBuf;

            FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS , NULL, lastError, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&lpMsgBuf, 0, NULL);
            QString errorText = ("failed with error: " + QString::number(lastError) + QString::fromWCharArray(lpMsgBuf));
        }
}
4

1 回答 1

3

我认为,问题在于exitCode争论。

MSND 将其指定LPDWORDDWORD. 您应该将有效指针传递给该函数,以便它可以取消引用它以在此处保存退出代码:

DWORD exitCode;
//....
if(!GetExitCodeProcess(shellInfo.hProcess, &exitCode))
于 2013-05-15T19:42:39.723 回答