【C++ Builder 11】文件和目录的操作

void __fastcall TForm1::Button9Click(TObject *Sender)
{
	UnicodeString uniFilename = this->Edit1->Text;

	if (FileExists(uniFilename, true)) { //判断文件是否存在
		const int pathSize = uniFilename.Length() + 2;
		wchar_t* from = new wchar_t[pathSize];
		wcscpy(from, uniFilename.c_str());
		from[pathSize-1] = 0;

		SHFILEOPSTRUCT fs;
		ZeroMemory(&fs, sizeof(SHFILEOPSTRUCT));
		fs.hwnd = Application->Handle;
		fs.wFunc = FO_DELETe;
		fs.pFrom = from;
		fs.pTo = NULL;
		fs.fFlags = FOF_SILENT | FOF_NOCONFIRMATION | FOF_ALLOWUNDO;
		bool result = (SHFileOperation(&fs) == 0); //将文件放入回收站
		delete[] from; //释放内存
		if (result) {
			ShowMessage("Del File ok!");
		}
	}
}

void __fastcall TForm1::Button10Click(TObject *Sender)
{
	UnicodeString uniSDir = this->Edit1->Text;//获取需要放入回收站的文件夹
	const int pathSize = uniSDir.Length() + 2;
	wchar_t* buff = new wchar_t[pathSize]; /
	wcscpy(buff, uniSDir.c_str());
	buff[pathSize-1] = 0;

	SHFILEOPSTRUCT fs;
	ZeroMemory(&fs, sizeof(SHFILEOPSTRUCT));
	fs.hwnd = Application->Handle;
	fs.wFunc = FO_DELETe;
	fs.pFrom = buff;
	fs.pTo = NULL;
	fs.fFlags=FOF_SIMPLEPROGRESS|FOF_NOCONFIRMATION;
	bool result = (SHFileOperation(&fs) == 0);
	delete[] buff;
	if (result) {
		ShowMessage("Del File ok!");
	}
}

void __fastcall TForm1::Button5Click(TObject *Sender)
{
	UnicodeString uniSDir = this->Edit1->Text;//获取需要放入回收站的文件夹（不一定为空）
	const int pathSize = uniSDir.Length() + 2;
	wchar_t* from = new wchar_t[pathSize];
	wcscpy(from, uniSDir.c_str());
	from[pathSize-1] = 0;

	SHFILEOPSTRUCT fs;
	ZeroMemory(&fs, sizeof(SHFILEOPSTRUCT));
	fs.hwnd = Application->Handle;
	fs.wFunc = FO_DELETe;
	fs.pFrom = from;
	fs.pTo = NULL;
	fs.fFlags = FOF_SILENT | FOF_NOCONFIRMATION | FOF_ALLOWUNDO;//放入回收站

	bool result = (SHFileOperation(&fs) == 0);//需要用户确认，涉及权限控制
	if (result) {
		ShowMessage("Del file ok:" + uniSDir);
	}
	delete[] from;
}

void __fastcall TForm1::Button6Click(TObject *Sender)
{
	DWORD dwFlags = SHERB_NOCONFIRMATION | SHERB_NOPROGRESSUI | SHERB_NOSOUND;
	bool result = SHEmptyRecycleBin(Application->Handle, NULL, dwFlags);
	if (result) {
		ShowMessage("Empty Recycle BIN ok!");
	}
}

void __fastcall TForm1::Button2Click(TObject *Sender)
{
	// C++Builder 11.0 support
	UnicodeString uniTmpPath;
	uniTmpPath  = TPath::GetTempPath();//获取系统临时目录，需要#include 
	if (uniTmpPath == "")//若获取不到，抛出异常
	{
		throw Exception("Cannot get temporary direcotry.");
	}
	this->Edit1->Text = uniTmpPath;
}

void __fastcall TForm1::Button3Click(TObject *Sender)
{
	// C++Builder 11.0 support
	UnicodeString uniTmpFilename;
	uniTmpFilename = TPath::GetTempFileName(); //生成唯一的临时文件名，结果返回创建的文件名，需要#include 
	if (uniTmpFilename == "") //一般权限不够会失败
	{
		throw Exception("Cannot get temporary filename.");
	}
	this->Edit1->Text = uniTmpFilename;
}