Allow one to set a custom progress callback (#2609)

ming030890

2025-08-05 b3fb4c0acd5f52a313f024b6f69b8f025c6eddfe

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
boy
boy
boy
boy
boy
boy
boy
girl
girl
pretty girl
cat
dog
dog
dog
rat
red faced clown
green caterpillar