015
25.10.2002, 20:08 Uhr
void*
Generic Pointer
(Operator)
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Hallo!
Das Problem:
| Zitat: |
MSDN:
Note The _popen function returns an invalid file handle, if used in a Windows program, that will cause the program to hang indefinitely. _popen works properly in a Console application. To create a Windows application that redirects input and output, read the section "Creating a Child Process with Redirected Input and Output" in the Win32 SDK.
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Die Lösung:
| C++: |
void CPipeDlg::OnButton1()
{
STARTUPINFO si;
memset(&si, 0, sizeof(si));
si.cb=sizeof(si);
// Fenster nicht anzeigen
si.dwFlags = STARTF_USESHOWWINDOW;
si.wShowWindow = SW_HIDE;
// pipe oeffnen
SECURITY_ATTRIBUTES sa;
sa.nLength=sizeof(SECURITY_ATTRIBUTES);
sa.bInheritHandle=TRUE;
sa.lpSecurityDescriptor=NULL;
HANDLE readPipe, writePipe;
if(!CreatePipe(&readPipe, &writePipe, &sa, 0))
{
exit(1);
}
else
{
si.dwFlags|=STARTF_USESTDHANDLES;
si.hStdOutput=writePipe;
si.hStdInput=readPipe;
si.hStdError=writePipe;
PROCESS_INFORMATION pi;
// prozess starten
if(!CreateProcess(0, "tracert -h 5 [url]www.hsv.de[/url] ", 0, 0, TRUE, 0, 0, 0, &si, &pi ))
{
exit(2);
}
else
{
WaitForSingleObject(pi.hProcess, INFINITE);
CloseHandle (pi.hProcess);
DWORD NumberOfBytesRead;
char buffer[256];
std::string output;
while(ReadFile(readPipe, buffer, 255, &NumberOfBytesRead, 0))
{
buffer[NumberOfBytesRead]=0;
output+=buffer;
if(NumberOfBytesRead!=255)
break;
}
CloseHandle(writePipe);
CloseHandle(readPipe);
MessageBox(output.c_str());
}
}
}
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Gruß
void*
edit by FloSoft: Bitte bei Urlangaben im cppcode die url-tags benutzen
--
Gruß
void*
Dieser Post wurde am 16.01.2007 um 17:22 Uhr von FloSoft editiert. |
