Acess Violation错误，愁死人了。

Question

void CIOCPDlg::OnPath() 
{
OPENFILENAME ofn; TCHAR szPathName[128];
memset(szPathName,'\0',sizeof(szPathName));
ofn.lStructSize=sizeof(OPENFILENAME);
ofn.hwndOwner=m_hWnd;
ofn.lpstrFilter=TEXT("*.*\0");
lstrcpy(szPathName,TEXT("*.*"));

ofn.lpstrFile=szPathName;
ofn.nMaxFile=sizeof(szPathName)/sizeof(TCHAR);
ofn.lpstrTitle=TEXT("Select File To Copy");
ofn.Flags=OFN_EXPLORER|OFN_FILEMUSTEXIST;


BOOL fOk=GetOpenFileName(&ofn); 
}这段代码出现运行错误，步进调试到最后一句时候，弹出对话框说
Unhandled exception in IOCP.exe（KERNEL32.dll）：0xC0000005：Acess Violation
是什么错误呢，遇到这种错误怎么办呢

Answer 1

OPENFILENAME ofn = {0}; 就可以了。

Answer 2

ofn.lpstrFilter=TEXT("*.*\0"); ＝》ofn.lpstrFilter = "All\0*.*\0";不要使用TEXT宏，这个成员类型为 char * 不是 TCHAR *

Answer 3

void CIOCPDlg::OnPath() 
{ 
OPENFILENAME ofn; 
ZeroMemory(&ofn, sizeof(ofn));   //ok
TCHAR szPathName[128]; 
memset(szPathName,'\0',sizeof(szPathName)); 
ofn.lStructSize=sizeof(OPENFILENAME); 
ofn.hwndOwner=m_hWnd; 
ofn.lpstrFilter=TEXT("*.*\0"); 
lstrcpy(szPathName,TEXT("*.*")); ofn.lpstrFile=szPathName; 
ofn.nMaxFile=sizeof(szPathName)/sizeof(TCHAR); 
ofn.lpstrTitle=TEXT("Select File To Copy"); 
ofn.Flags=OFN_EXPLORER|OFN_FILEMUSTEXIST; 
BOOL fOk=GetOpenFileName(&ofn); }