请问个问题

[crosoli]

char *temppath= new char[40];
ZeroMemory(temppath,40);
temppath = m_filepath.GetBuffer(0);
while (strlen(temppath) < 40)
{
strcat(temppath," ");
}
file.Write(temppath,40);
delete temppath;



请问为什么运行的时候 delete temppath;的时候 出现
File:dbgheap.c ，Line:1011 ，Expression:_Crtls ValidHeapPointer的错误.
delete []temppath;也一样..

[cdsnpeter]

这种错误一般是越界了。。。

[crosoli]

你是说数组越界了?
temppath 肯定没有呀.

[crosoli]

把delete temppath; 这句注释点就不会报错了.
但是退出的时候就会报内存泄露..

[crosoli]

明白了
temppath = m_filepath.GetBuffer(0);

这里.........

[昨夜无风]

把

temppath = m_filepath.GetBuffer(0);

替换成
if(m_filepath.GetLength()<40)
{
strcpy(temppath,m_filepath.GetBuffer(0));
}

[crosoli]

char *temppath;
temppath = m_filepath.GetBuffer(40);
while (strlen(temppath) < 40)
{
strcat(temppath," ");
}
file.Write(temppath,40);
m_filepath.ReleaseBuffer();

[wltg2001]

temppath指向的是CString内部分配的空间，你删除它当然出错了。
改成这样：
char *temppath= new char[40];
ZeroMemory(temppath,40);
//temppath = m_filepath.GetBuffer(0);
strcpy(temppath,m_filepath.GetBuffer(0));
while (strlen(temppath) < 40)
{
strcat(temppath," ");
}
file.Write(temppath,40);
delete[] temppath;

[Eleven]

[Quote=引用楼主 crosoli 的回复:]
char *temppath= new char[40];
ZeroMemory(temppath,40);
temppath = m_filepath.GetBuffer(0);
while (strlen(temppath) < 40)
{
strcat(temppath," ");
}
file.Write(temppath,40);
delete temppath;

……
[/Quote]
m_filepath.GetBuffer(0);
---------------------------
你修改了temppath的地址了

[Happy0403]

m_filepath.GetBuffer(0);

为什么一定要这样用呢？
这样多好

m_filepath.GetBuffer(1024/*或者更大*/);

[Happy0403]

char *temppath= new char[40];
ZeroMemory(temppath,40);
temppath = m_filepath.GetBuffer(0);
while (strlen(temppath) < 40)
{
strcat(temppath," ");
}
file.Write(temppath,40);
delete temppath;

还有，你既然这样：（1）

char *temppath= new char[40];

那为什么还要这样：（2）

temppath = m_filepath.GetBuffer(0);

会内存泄漏的。


既然已经那样(2)了，这样做也不对

delete temppath;

还有。
GetBuffer之后一定要ReleaseBuffer()

m_filepath.ReleaseBuffer()

[向立天]

你这个用的太混乱了

[Sou2012]

[Quote=引用 10 楼 weizehua 的回复:]

C/C++ code
char *temppath= new char[40];
ZeroMemory(temppath,40);
temppath = m_filepath.GetBuffer(0);
while (strlen(temppath) < 40)
{
strcat(temppath," ");
}
file.Write(temppath,40);
delete temppath……
[/Quote]

讲得很清楚了。

[Liberty-Bird]

char *temppath= new char[40];
ZeroMemory(temppath,40);
temppath = m_filepath.GetBuffer(0);
这样写有错误，新申请的40个字节的空间被丢弃导致内存泄露，应该写作：
memcpy(temppath,m_filepath.GetBuffer(0),m_filepath.GetLength());
使用完毕再：delete[] temppath;