如何使用Qt(C ++)检查程序是否按其名称运行 [英] How to check if a program is running by its name with Qt (C++)
问题描述
如何使用Qt(C ++)来检查程序是否正在运行.
How to check if a program is running, by its name, with Qt (C++).
QProcess :: pid
会完成这项工作吗?我不知道该怎么用.请提出建议.
Will QProcess::pid
do the job? I don't know how to use it. Please suggest.
推荐答案
据我所知,QProcess不允许您这样做(除非您自己生成了该过程),实际上Qt不会这样做.但是Win32 API提供了一种通过 EnumProcesses
函数实现所需功能的方法,并且在Microsoft网站上提供了如何使用它的完整示例:
As far as I know QProcess won't allow you to do that (unless you've spawned the process yourself) and in fact nothing in Qt will. However Win32 API provides a way to achieve what you want through EnumProcesses
function and a complete example of how to use it is provided at Microsoft website:
http://msdn.microsoft.com/en-us/library/ms682623.aspx
要获取此信息,请使用以下函数替换PrintProcessNameAndID:
To get you need replace PrintProcessNameAndID with the following function:
bool matchProcessName( DWORD processID, std::string processName)
{
TCHAR szProcessName[MAX_PATH] = TEXT("<unknown>");
// Get a handle to the process.
HANDLE hProcess = OpenProcess( PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ,
FALSE, processID );
// Get the process name.
if (NULL != hProcess )
{
HMODULE hMod;
DWORD cbNeeded;
if ( EnumProcessModules( hProcess, &hMod, sizeof(hMod),
&cbNeeded) )
{
GetModuleBaseName( hProcess, hMod, szProcessName,
sizeof(szProcessName)/sizeof(TCHAR) );
}
}
// Compare process name with your string
bool matchFound = !_tcscmp(szProcessName, processName.c_str() );
// Release the handle to the process.
CloseHandle( hProcess );
return matchFound;
}
这篇关于如何使用Qt(C ++)检查程序是否按其名称运行的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!