这段代码的问题是？

[program2100]

CFilDialog dlgOpenFile(...);//Allow multi select

if(IDOK == dlgOpenFile.DoModal())
{
...//Add filenames to a listbox
}
else
{
FormatMessage(...);//调用GetLastError()
MessageBox(...);
}
在FileDialog中选择少量文件就没有问题。一旦超过一定数量，
listbox中看不到任何item，单步调试证实表达式
IDOK == dlgOpenFile.DoModal()不成立，执行GetLastError()语句，
我用FormatMessage+MessageBox得到的信息是"The operation completed successfully"。这是怎么回事?

[jerry]

多选时，你必需为文件名列表分配内存空间。
可能是你给多选分配的缓冲区不足。　加大一点。比如加大到1兆试试

[bluebohe]

char str[2048];
str[0]=0;

dlgOpenFile.m_ofn.lpstrFile=str
dlgOpenFile.m_ofn.nMaxFile=2048;
if(IDOK == dlgOpenFile.DoModal())
{
...//Add filenames to a listbox
}
else
{
FormatMessage(...);//调用GetLastError()
MessageBox(...);
}

[tigerfox]

楼上已经说了。

[dennis80]

UP，学习

[hahu]

CFileDialog在使用多选的时候要
先给他分配存放FileName的控件
看MSDN的介绍
To allow the user to select multiple files, set the OFN_ALLOWMULTISELECT flag before calling DoModal. You need to supply your own filename buffer to accommodate the returned list of multiple filenames. Do this by replacing m_ofn.lpstrFile with a pointer to a buffer you have allocated, after constructing the CFileDialog, but before calling DoModal. Additionally, you must set m_ofn.nMaxFile with the number of characters in the buffer pointed to by m_ofn.lpstrFile.
关键时OFN_ALLOWMULTISELECT
m_ofn.lpstrFile m_ofn.nMaxFile