我在版上找到一篇文章
http://delphi.ktop.com.tw/board.php?cid=168&fid=914&tid=91684
其中Stallion版主貼了一段如何使用CreatePipe的範例程式

但是我在使用上有一個疑問
Stallion版主是這麼寫的
ret = ::ReadFile(hReadPipe, &cBuffer, 255, &lngBytesRead, 0);
sBuffer=StrPas(cBuffer);
sOutput = sOutput sBuffer;
Memo1->Lines->Add(sBuffer);

因為這樣子的結果是把整段字串都重新列印一次
我希望印出的部份不要重複
於是我改成下列的方式
ret = ::ReadFile(hReadPipe, &cBuffer, 255, &lngBytesRead, 0);
sBuffer = StrPas(cBuffer);
Memo1->Lines->Add(sBuffer);

但是這樣子執行執行起來
得到的結果卻是Bad command or file

請問有什麼原因嗎？
sOutput看起來只是儲存目前取得的所有字串
為什麼少了那一行結果會差這麼多？

問題是出在 CreateProcess 吧??
把你的code post 上來會比較清楚...

------
FPGA驗證, FPGA開發平台, http://smims.com

ikk您好
因為我是參考Stallion版主的文章
所以程式碼內容大同小異
以下是我的程式碼

[code cpp]
PROCESS_INFORMATION pi;
STARTUPINFO si;
SECURITY_ATTRIBUTES sa;
HANDLE hReadPipe;
HANDLE hWritePipe;
AnsiString sOutput;
AnsiString sBuffer;
long ret;
bool sPipe;
unsigned long BytesRead;
char cBuffer[256];

MemoMsg->Clear();

sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = 0;
sa.bInheritHandle = TRUE;
sPipe = CreatePipe( &hReadPipe, &hWritePipe, &sa, 0 );

if( !sPipe ) {
sOutput = "CreatePipe failed. Error: " AnsiString(GetLastError());
MemoMsg->Lines->Add(sOutput);
return;
}

si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.hStdOutput = hWritePipe;
si.hStdError = hWritePipe;
si.wShowWindow = SW_HIDE;
sBuffer.sprintf("ping 192.168.0.10");
ret = CreateProcess( 0, sBuffer.c_str(), &sa, &sa, TRUE, NORMAL_PRIORITY_CLASS,
0, 0, &si, &pi );

if( ret == 0 ) {
sOutput = "Bad command or filename";
MemoMsg->Lines->Add(sOutput);
return;
}

CloseHandle(hWritePipe);

do {
memset( cBuffer, '\0', sizeof(cBuffer) );
ret = ReadFile( hReadPipe, &cBuffer, 255, &BytesRead, 0 );
sBuffer = StrPas(cBuffer);
MemoMsg->Lines->Add(sBuffer);
} while( ret != 0 );

CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
CloseHandle(hReadPipe);
[/code]

編輯記錄

請給STARTUPINFO初始值
[code cpp]
STARTUPINFO si = {0};
[/code]

------
FPGA驗證, FPGA開發平台, http://smims.com

si.cb = sizeof(STARTUPINFO);
GetStartupInfo(&si);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.hStdOutput = hWritePipe;
si.hStdError = hWritePipe;
si.wShowWindow = SW_HIDE;
sBuffer.sprintf("ping 192.168.0.10");

===================引 用 dadai 文 章===================
ikk您好
因為我是參考Stallion版主的文章
所以程式碼內容大同小異
以下是我的程式碼

[code cpp]
PROCESS_INFORMATION pi;
STARTUPINFO si;
SECURITY_ATTRIBUTES sa;
HANDLE hReadPipe;
HANDLE hWritePipe;
AnsiString sOutput;
AnsiString sBuffer;
long ret;
bool sPipe;
unsigned long BytesRead;
char cBuffer[256];

MemoMsg->Clear();

sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = 0;
sa.bInheritHandle = TRUE;
sPipe = CreatePipe( &hReadPipe, &hWritePipe, &sa, 0 );

if( !sPipe ) {
sOutput = "CreatePipe failed. Error: " AnsiString(GetLastError());
MemoMsg->Lines->Add(sOutput);
return;
}

si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.hStdOutput = hWritePipe;
si.hStdError = hWritePipe;
si.wShowWindow = SW_HIDE;
sBuffer.sprintf("ping 192.168.0.10");
ret = CreateProcess( 0, sBuffer.c_str(), &sa, &sa, TRUE, NORMAL_PRIORITY_CLASS,
0, 0, &si, &pi );

if( ret == 0 ) {
sOutput = "Bad command or filename";
MemoMsg->Lines->Add(sOutput);
return;
}

CloseHandle(hWritePipe);

do {
memset( cBuffer, '\0', sizeof(cBuffer) );
ret = ReadFile( hReadPipe, &cBuffer, 255, &BytesRead, 0 );
sBuffer = StrPas(cBuffer);
MemoMsg->Lines->Add(sBuffer);
} while( ret != 0 );

CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
CloseHandle(hReadPipe);
[/code]

奇怪了!!

為什麼在看的時候是： sa.lpSecurityDeforbiddenor = 0; ----> 'lpSecurityDeforbiddenor' is not a member of '_SECURITY_ATTRIBUTES'

可是我引用回覆時，就正確了 ----> sa.lpSecurityDescriptor = 0;


===================引 用 dadai 文 章===================
ikk您好
因為我是參考Stallion版主的文章
所以程式碼內容大同小異
以下是我的程式碼

[code cpp]
PROCESS_INFORMATION pi;
STARTUPINFO si;
SECURITY_ATTRIBUTES sa;
HANDLE hReadPipe;
HANDLE hWritePipe;
AnsiString sOutput;
AnsiString sBuffer;
long ret;
bool sPipe;
unsigned long BytesRead;
char cBuffer[256];

MemoMsg->Clear();

sa.nLength = sizeof(sa);
sa.lpSecurityDescriptor = 0;
sa.bInheritHandle = TRUE;
sPipe = CreatePipe( &hReadPipe, &hWritePipe, &sa, 0 );

if( !sPipe ) {
sOutput = "CreatePipe failed. Error: " AnsiString(GetLastError());
MemoMsg->Lines->Add(sOutput);
return;
}

si.cb = sizeof(STARTUPINFO);
si.dwFlags = STARTF_USESTDHANDLES | STARTF_USESHOWWINDOW;
si.hStdOutput = hWritePipe;
si.hStdError = hWritePipe;
si.wShowWindow = SW_HIDE;
sBuffer.sprintf("ping 192.168.0.10");
ret = CreateProcess( 0, sBuffer.c_str(), &sa, &sa, TRUE, NORMAL_PRIORITY_CLASS,
0, 0, &si, &pi );

if( ret == 0 ) {
sOutput = "Bad command or filename";
MemoMsg->Lines->Add(sOutput);
return;
}

CloseHandle(hWritePipe);

do {
memset( cBuffer, '\0', sizeof(cBuffer) );
ret = ReadFile( hReadPipe, &cBuffer, 255, &BytesRead, 0 );
sBuffer = StrPas(cBuffer);
MemoMsg->Lines->Add(sBuffer);
} while( ret != 0 );

CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
CloseHandle(hReadPipe);
[/code]

原來差了一行結果會差這麼多
是我自己太不小心了

感謝ikk與2007兩位前輩的指導
兩位的方法我都有試過
而且都可以正常執行

因為ikk前輩先回答我的問題
所以我把結案給ikk前輩
請2007前輩包含