1.WIN32应用程序中有2个文本框，2个按钮.
2.在A文本框中输入内容时，B文本框同步更新。
　约束：
　　 1。A文本框只能输入字母，最多只能输入19字母。
　　 2。B文本框能自动转化小写为大写，且只读。
3.按钮A，点击后启动一个定时器，每隔一秒将当前时间显示在窗体标题栏，再次点击时停止定时器。
4.按钮B，点击后弹出一个模式对话框，关闭模式对话框后返回当前窗口，对话框内信息要求显示中文。(1. There are 2 text boxes and 2 buttons in the WIN32 application.
2. When entering content in A text box, the B text box is updated.
Constraints:
1. A text box can only enter letters, at most 19 letters.
2. The B text box can be automatically converted to uppercase and read only.
3. Button A, click and start A timer, display the current time in the window title bar every other second, and stop the timer when clicked again.
4. Button B, click and pop up a pattern dialog box, close the mode dialog box and return to the current window. The information in the dialog box will display the Chinese language.)