MFC Unencrypt Zip (w/ Unicode CString)

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Visual C++ 8.0 MFC Unicode example program using CString's demonstrating how to open an AES encrypted .zip, remove the encryption, and save as an unencrypted zip.

	// Visual C++ MFC example program showing how
	// to open a WinZip AES encrypted Zip, remove the encryption properties, and re-write.
	//
	// Also demonstrates how to use Unicode and CString with the
	// Chilkat C++ libs.
	CkString cks;
	CkZip zip;

	CString cs = _T("anything 30-day trial");
	wchar_t *w = cs.GetBuffer();
	cks.setStringU(w);
	zip.UnlockComponent(cks.getString());

	// 4 = WinZip compatible AES encryption.
	zip.put_Encryption(4);

	// Set the password...
	cs = _T("secret");
	cks.setStringU(cs.GetBuffer());
	zip.SetPassword(cks.getString());

	// Open an AES encrypted .zip
	cs = _T("encryptedZip.zip");
	cks.setStringU(cs.GetBuffer());
	zip.OpenZip(cks.getString());

	// Unset encryption
	zip.put_Encryption(0);

	// Change the name of the .zip to be written.
	// If this is omitted, the original zip would be overwritten.
	cs = _T("unencryptedZip.zip");
	cks.setStringU(cs.GetBuffer());
	zip.put_FileName(cks.getString());

	// Write the zip.
	zip.WriteZipAndClose();
	zip.SaveLastError("writeZipLog.txt");