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发表于 2014-4-10 12:46:53
IP属地江苏
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精度条可以通过管道,获取dism的标准输出,然后解析字符串得到。但读管道时需要使用循环,为防止界面卡死,还需开一个新的线程。这是我以前烂尾的GUIImageX的部分代码,参考下。
void WorkThread(PVOID pvoid)
{
PTHREAD_PARAMS pThreadParams = (PTHREAD_PARAMS) pvoid ;
HANDLE hRead; // 管道读句柄
HANDLE hWrite;// 管道写句柄
SECURITY_ATTRIBUTES sa;
sa.nLength = sizeof(SECURITY_ATTRIBUTES);
sa.lpSecurityDescriptor = NULL; //使用系统默认的安全描述符
sa.bInheritHandle = TRUE; //创建的进程继承句柄
if(!CreatePipe(&hRead,&hWrite,&sa,0))
{
MessageBox (NULL,TEXT("创建匿名管道失败"), 0, MB_ICONERROR);
EndWorkThread(pThreadParams->hwnd);
}
STARTUPINFO si;
PROCESS_INFORMATION pi;
ZeroMemory(&si,sizeof(STARTUPINFO));
//si.cb = sizeof(STARTUPINFO);
GetStartupInfo(&si); // 获取本进程的STARTUPINFO结构信息
si.hStdOutput = hWrite; //新创建进程的标准输出连在写管道一端
si.hStdError = GetStdHandle(STD_ERROR_HANDLE);//返回父进程错误句柄
si.wShowWindow = SW_HIDE;
si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
if(!CreateProcess(NULL,pThreadParams->CmdLine,NULL,NULL,TRUE,0,NULL,NULL,&si,&pi))
{
MessageBox (NULL,TEXT("创建子进程失败"), 0, MB_ICONERROR);
CloseHandle(hRead);
CloseHandle(hWrite);
EndWorkThread(pThreadParams->hwnd);
}
CloseHandle(pi.hProcess); //关闭所返回的子进程句柄
CloseHandle(pi.hThread); //关闭子进程中主线程句柄
//必须关闭父进程写句柄,否则 ReadFile 可能堵塞
CloseHandle(hWrite);
//读取管道而定义的缓冲区
char ReadBuf[BUFFER_LENGTH] = {0};
DWORD bytesRead;
while(ReadFile(hRead, ReadBuf, BUFFER_LENGTH - 1, &bytesRead, NULL))
{
//dism的输出内容在ReadBuf中,需要解析出[ xxx% ]。
}
EndWorkThread(pThreadParams->hwnd);
}
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