Question

VC 如何设置默认生成的打开对话框的文件过滤器

大意如题！

Answer 1

这个可以:
CString filter_str = "txt files (*.txt)|*.txt|word files (*.doc)|*.doc||";
CFileDialog mSaveDlg(FALSE,NULL,NULL,NULL,filter_str,NULL);//初始化
mSaveDlg.DoModal();//显示

DWORD filter_num = mSaveDlg.m_ofn.nFilterIndex;//返回的是当前选择的文件类型是第几个
filter_num -= 1;//适应数组
char a[][9] = {".txt",".avi",""};//文件类型数组

CString file_ext = a[filter_num];//获得文件类型的名称
int ext_length = file_ext.GetLength();//获得长度