请问编译出错 哪的问题呢？谢谢

Question

代码如下：
#include "stdafx.h"
#include <iostream>
#include <windows.h>
#include <winbase.h>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{
 STARTUPINFOW si;
 si.cb=sizeof(si);
 wchar_t *sz_CommandLine=L"notepad";
 PROCESS_INFORMATION pi;
 ::CreateProcessW(NULL,sz_CommandLine,NULL,NULL,FALSE,NULL,NULL,NULL,&si,&pi);
 return 0;
}

编译提示：
1.exe 中的 0x7c82f29c 处最可能的异常: 0xC0000005: 写入位置 0x00415806 时发生访问冲突
1.exe 中的 0x7c82f29c 处未处理的异常: 0xC0000005: 写入位置 0x00415806 时发生访问冲突
程序“[2316] 1.exe: 本机”已退出，返回值为 0 (0x0)。

Answer 1

STARTUPINFOW结构的部分成员没有初始化。

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Answer 2

谢谢 我知道原因 但是不知道该怎么修改？请问该如何初始化呢？

Answer 3

STARTUPINFOW si;
ZeroMemory(&si, sizeof(STARTUPINFOW));
si.cb=sizeof(si);

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Answer 4

谢谢
问题在这里
The Unicode version of this function, CreateProcessW, can modify the contents of this string. Therefore, this parameter cannot be a pointer to read-only memory (such as a const variable or a literal string). If this parameter is a constant string, the function may cause an access violation.

但是改了之后 调式还会出错
si = {cb=3435973836 lpReserved=0xcccccccc <错误的指针> lpDesktop=0xcccccccc <错误的指针> ...}
lpReserved2 = 0xcccccccc <错误的指针>

Answer 5

呃，0xcccccccc表示结构成员没有初始化。

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Answer 6

Psdty 你好：

我觉得这个问题是由 wchar_t *sz_CommandLine=L"notepad"; 代码引起的。sz_CommandLine指向的是一个常量字符数组。并且si和pi并没有初始化。请参考下面代码：

    PROCESS_INFORMATION     pi;   
    ZeroMemory(&pi,sizeof(PROCESS_INFORMATION));   
    STARTUPINFO   si;   
    ZeroMemory(&si,sizeof(STARTUPINFO));   
            si.cb=sizeof(STARTUPINFO);   
    si.wShowWindow=SW_SHOW;   
    si.dwFlags=STARTF_USESHOWWINDOW; 
    wchar_t szCmdline[] = L"C:\\WINDOWS\\notepad.exe d:\\test.txt";

    BOOL   fRet=::CreateProcess(NULL,   
		szCmdline,   
    NULL,   
    NULL,   
    FALSE,   
    NULL,   
    NULL,   
    NULL,   
    &si,   
    &pi); 

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Answer 7

Nancy Shao  非常感谢 还是你说到点子上了 呵呵