运行程序，在“密钥”编辑框中输入密钥，在“待加密的字符串”编辑框中输入要加密的字符串，单击“加密”按钮，密文将显示在“加密后的字符串”编辑框中。-Run the program, in the key edit box, enter the key, in the to be encrypted string edit box to encrypt the string, click the encrypt button and close the text will appear