本文所述实例主要实现了删除某个盘符下指定位置的文件，可以是TXT、doc、jpeg等格式，只要选定格式后，再定义好盘符，即可一键删除所有指定类型的文件。再次提示删除前请确认，且删除后不可恢复。
以下是最主要的核心代码，其它代码读者可以自己添加。
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SHFILEINFO shInfo;
memset(&shInfo,0,sizeof(SHFILEINFO));
HIMAGELIST hImage = (HIMAGELIST)SHGetFileInfo("C:\\",0,&shInfo, sizeof( SHFILEINFO ),
SHGFI_SYSICONINDEX | SHGFI_SMALLICON );
m_ImageList.Attach(hImage);
m_ComboEx.SetImageList(&m_ImageList);
m_ComboEx.ResetContent();
char pchDrives[128] = {0};
char* pchDrive;
GetLogicalDriveStrings(sizeof(pchDrives), pchDrives); //列举盘符
pchDrive = pchDrives;
int nItem = 0;
while(*pchDrive)
{
COMBOBOXEXITEM cbi;
CString csText;
cbi.mask = CBEIF_IMAGE|CBEIF_INDENT|CBEIF_OVERLAY|
CBEIF_SELECTEDIMAGE|CBEIF_TEXT;
SHFILEINFO shInfo; //定义文件信息
int nIcon;
SHGetFileInfo(pchDrive, 0, &shInfo, sizeof(shInfo),
SHGFI_ICON|SHGFI_SMALLICON); //获取系统文件图标
nIcon = shInfo.iIcon;
//设置COMBOBOXEXITEM结构
cbi.iItem = nItem;
cbi.pszText = pchDrive;
cbi.cchTextMax = strlen(pchDrive);
cbi.iImage = nIcon;
cbi.iSelectedImage = nIcon;
cbi.iOverlay = 0;
cbi.iIndent = (0 & 0x03);
m_ComboEx.InsertItem(&cbi); //插入数据
nItem++;
pchDrive += strlen(pchDrive) + 1;
}
return TRUE; // return TRUE unless you set the focus to a control
}
void CDeleteDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
if ((nID & 0xFFF0) == IDM_ABOUTBOX)
{
CAboutDlg dlgAbout;
dlgAbout.DoModal();
}
else
{
CDialog::OnSysCommand(nID, lParam);
}
}
void CDeleteDlg::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(SM_CXICON);
int cyIcon = GetSystemMetrics(SM_CYICON);
CRect rect;
GetClientRect(&rect);
int x = (rect.Width() - cxIcon + 1) / 2;
int y = (rect.Height() - cyIcon + 1) / 2;
// Draw the icon
dc.DrawIcon(x, y, m_hIcon);
}
else
{
CDialog::OnPaint();
}
}
HCURSOR CDeleteDlg::OnQueryDragIcon()
{
return (HCURSOR) m_hIcon;
}
void CDeleteDlg::DelFile(CString path,CString name)
{
CString strtemp;
if (path.Right(1) != "\\") //判断路径是否以\结尾
strtemp.Format("%s\\*.*",path);//设置通配符
else
strtemp.Format("%s*.*",path);//设置通配符
CFileFind findfile;
BOOL bfind = findfile.FindFile(strtemp);//查找文件
while (bfind)//循环查找
{
bfind = findfile.FindNextFile();//查找下一个文件
if(!findfile.IsDots() && !findfile.IsDirectory())
{
CString str = findfile.GetFileName();
int index = str.ReverseFind('.');
if(str.Right(str.GetLength()-index) == name)
{
DeleteFile(findfile.GetFilePath());
}
}
else if (findfile.IsDots())
{
continue;
}
else if (findfile.IsDirectory())//如果是目录
{
DelFile(findfile.GetFilePath(),name);//递归查找
}
}
}
void CDeleteDlg::OnButdelete()
{
// TODO: Add your control notification handler code here
CString path,name;
m_ComboEx.GetWindowText(path);
m_ExName.GetWindowText(name);//获得文件扩展名
DelFile(path,name);
MessageBox("已删除指定类型文件！");
}
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这里省去了窗体部分的代码，进行过VC开发的朋友应该可以看得懂的。