I used to feel that the File button in the Form is not perfect because it doesn't have a Filter, so the opening window is also displayed. So the system's OpenDialog control is called so that it can be personal when you write a file. . But only useful for WIN systems! ! !
The test code is as follows: Directly saved as an HTM file to see the effects
OpenDialog control title > "Select Font" οnclick =' OpenFont () '>