关于createprocess（）总不能成功创建子程序~
下面是我的代码，每次运行都是提示， create child process failed。 ~~~~ 求助。 是不是那个createprocess第二个参数的问题，我vs2010， 使用多字符编码，没用Unicode！！
HANDLE hreadFW = NULL; // 供主程序写，子程序读的管道
HANDLE hwriteFW = NULL;
SECURITY_ATTRIBUTES saFW;
saFW.bInheritHandle = TRUE;
saFW.lpSecurityDescriptor = NULL;
saFW.nLength = sizeof(SECURITY_ATTRIBUTES);
if (!CreatePipe(&hreadFW,&hwriteFW,&saFW,0))
{
AfxMessageBox("Create Pipe For Father Proc Write, Child Proc Read Failed!",IDOK,0);
return;
}
HANDLE hreadCW = NULL; //供子程序写，主程序读的管道
HANDLE hwriteCW = NULL;
SECURITY_ATTRIBUTES saCW;
saCW.bInheritHandle = TRUE;
saCW.lpSecurityDescriptor = NULL;
saCW.nLength = sizeof(SECURITY_ATTRIBUTES);
if (!CreatePipe(&hreadCW,&hwriteCW,&saCW,0))
{
AfxMessageBox("Create Pipe For Child Proc Write, Father Proc Read Failed!",IDOK,0);
return;
}
STARTUPINFO sui; //以下创建子程序
ZeroMemory(&sui,sizeof(STARTUPINFO));
sui.cb = sizeof(STARTUPINFO);
sui.dwFlags = STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES;
sui.hStdInput = hreadFW;
sui.hStdOutput = sui.hStdError = hwriteCW;
PROCESS_INFORMATION pi;
ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
CString str = "CMDA_Implement.exe";
LPSTR szCommandLine = (LPSTR)(LPCTSTR)str;
if (!CreateProcess(NULL,szCommandLine,NULL,NULL,1,0,NULL,NULL,&sui,&pi))
{ // CMDA_Implement.exe 是我另外编译好的程序，放在此程序的主文件夹里
CloseHandle(hreadFW);
CloseHandle(hwriteCW);
CloseHandle(hreadCW);
CloseHandle(hwriteFW);
hwriteCW = NULL;
hreadFW = NULL;
hwriteFW = NULL;
hreadCW = NULL;
AfxMessageBox("Create Child Proc Failed!",IDOK,0);
return;
｝
[解决办法]
估计是路径的问题
把szCommandLine换成绝对路径试试
[解决办法]
失败后GetLastError();
查看错误码
[解决办法]
