我ShellExecuteEx
用来运行外部应用程序:
SHELLEXECUTEINFO shExInfo = { 0 };
shExInfo.cbSize = sizeof(shExInfo);
shExInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
shExInfo.hwnd = 0;
shExInfo.lpVerb = L"runas"; // Operation to perform
shExInfo.lpFile = windowStringContainingAppPath.c_str(); // Application to start
shExInfo.lpParameters = windowStringContainingAppParameters.c_str(); // Additional parameters
shExInfo.lpDirectory = 0;
shExInfo.nShow = SW_SHOW;
shExInfo.hInstApp = 0;
if(ShellExecuteEx(&shExInfo))
{
WaitForSingleObject(shExInfo.hProcess, INFINITE);
DeleteFile(wsMesh3dx64Parameter.c_str());
CloseHandle(shExInfo.hProcess);
}
一切正常,但此外部应用程序存在计划外行为,在关闭其主窗口后,其进程仍处于活动状态。这可以防止WaitForSingleObject(shExInfo.hProcess, INFINITE);
返回,我必须手动终止该过程。
相反,我正在寻找一种方法来替换WaitForSingleObject(shExInfo.hProcess, INFINITE);
一个循环,该循环检查外部进程是否拥有一个窗口,如果没有则终止它。
这是我想到的,但如果有更好的方法,请为我指出。
更新:
感谢罗布森的回答,我设法做到了我打算做的事情:
struct Porcess_ID_HWND
{
DWORD processID;
HWND processhWnd;
};
BOOL CALLBACK EnumWindowsProc(HWND hWnd, LPARAM lParam)
{
Porcess_ID_HWND*info = (Porcess_ID_HWND*)lParam;
DWORD processID;
GetWindowThreadProcessId(hWnd, &processID);
if (processID == info->processID){
info->processhWnd = hWnd;
return FALSE;
}
return TRUE;
}
我的循环:
if(ShellExecuteEx(&shExInfo))
{
DWORD dwProcessID = GetProcessId(shExInfo.hProcess);
Porcess_ID_HWND info;
info.processID = dwProcessID;
// wait for window to appear
do
{
info.processhWnd = NULL;
EnumWindows(EnumWindowsProc, (LPARAM)&info);
} while (!info.processhWnd);
// wait for window to close
do
{
info.processhWnd = NULL;
EnumWindows(EnumWindowsProc, (LPARAM)&info);
} while (info.processhWnd);
//WaitForSingleObject(shExInfo.hProcess, INFINITE);
DeleteFile(wsMesh3dx64Parameter.c_str());
CloseHandle(shExInfo.hProcess);
}