> For the complete documentation index, see [llms.txt](https://docs.cherax.vip/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cherax.vip/lua-documentation/api-reference/g_hooking/register_wndproc_hook.md).

# register\_wndproc\_hook

int register\_wndproc\_hook(function(int msg, int wparam, int lparam) callback)