wine-dump can look at the import table. You can compare that with the export table from wine to see which routine is missing.

One non-wine solution is a piece of software called dependency walker. It looks at what a software requires at the api / dll level.

On Tuesday 6 May 2025 at 13:11:48 BST, zhengxianwei <baikaishiuc@gmail.com> wrote:

When a function is commented out and the application calls it, the application crash silently . I dont know which function caused this. Is there any way to quickly determine which functions are unimplemented ?

eg: https://github.com/wine-mirror/wine/blob/226a7eeabbc13345e49da1ff8c018d6f06211c66/dlls/user32/user32.spec#L805