:
FILE *fp1,*fp2;
char *buffer = (char*)malloc(1024*1024);
int nSize = 0; char *pExsit = exsitFile.GetBuffer(0); //源路径
char *pNew = NewFile.GetBuffer(0); //目标路径
if(NULL == (fp1 = fopen(pExsit,"rb")))
{
AfxMessageBox("打开源文件失败!");
return -1;
}
if(NULL == (fp2 = fopen(pNew,"wb+")))
{
AfxMessageBox("建立目标文件失败!");
return -1;
}
while(!feof(fp1))
{
MSG msg;
while(PeekMessage(&msg,NULL,0,0,PM_REMOVE)){
if(msg.message == WM_THREAD_STOP){ //接收到终止拷贝线程的消息
fclose(fp1);
fclose(fp2);
exsitFile.ReleaseBuffer();
NewFile.ReleaseBuffer();
free(buffer);
return 0;
}
else{
DispatchMessage(&msg);
}
}
nSize = fread(buffer,1,1024*1024,fp1);
fwrite(buffer,1,nSize,fp2);
Sleep(50);
} fclose(fp1);
fclose(fp2);
exsitFile.ReleaseBuffer();
NewFile.ReleaseBuffer();
free(buffer);
return 1;上面的函数是拷贝线程里的把文件从U盘复制到电脑的函数,每次写入1M,比如一个1.3G的文件,当复制了768M后,接收到停止拷贝的消息,就把文件指针P1和P2都关闭了,然后把已经复制了的768M的文件给删除,现在问题是:这个768M的文件,又是可以删除,有时却删除不掉,请问各位大概是啥子原因呢?
FILE *fp1,*fp2;
char *buffer = (char*)malloc(1024*1024);
int nSize = 0; char *pExsit = exsitFile.GetBuffer(0); //源路径
char *pNew = NewFile.GetBuffer(0); //目标路径
if(NULL == (fp1 = fopen(pExsit,"rb")))
{
AfxMessageBox("打开源文件失败!");
return -1;
}
if(NULL == (fp2 = fopen(pNew,"wb+")))
{
AfxMessageBox("建立目标文件失败!");
return -1;
}
while(!feof(fp1))
{
MSG msg;
while(PeekMessage(&msg,NULL,0,0,PM_REMOVE)){
if(msg.message == WM_THREAD_STOP){ //接收到终止拷贝线程的消息
fclose(fp1);
fclose(fp2);
exsitFile.ReleaseBuffer();
NewFile.ReleaseBuffer();
free(buffer);
return 0;
}
else{
DispatchMessage(&msg);
}
}
nSize = fread(buffer,1,1024*1024,fp1);
fwrite(buffer,1,nSize,fp2);
Sleep(50);
} fclose(fp1);
fclose(fp2);
exsitFile.ReleaseBuffer();
NewFile.ReleaseBuffer();
free(buffer);
return 1;上面的函数是拷贝线程里的把文件从U盘复制到电脑的函数,每次写入1M,比如一个1.3G的文件,当复制了768M后,接收到停止拷贝的消息,就把文件指针P1和P2都关闭了,然后把已经复制了的768M的文件给删除,现在问题是:这个768M的文件,又是可以删除,有时却删除不掉,请问各位大概是啥子原因呢?
这样就可能会产生你在发送了"停止"消息后,线程中还没有执行到fclose,你就调用删除文件的函数,这时当然就会失败.
所以你要先保证flose已经被执行后,再调用删除函数.(关键字词:多线程同步与互斥)
LPSHFILEOPSTRUCT lpFileOp
);
用这个 来实现