core: Allow bool<std::string> callback functions

2024-04-07 14:01:27 +02:00
parent e2fa301904
commit 3005ac54ef
1 changed files with 4 additions and 2 deletions
--- a/src/core/model/callback.h
+++ b/src/core/model/callback.h
@@ -490,8 +490,10 @@ class Callback : public CallbackBase
     * of the first argument is a class derived from CallbackBase (i.e., a Callback).
     */
    template <typename T,
-              std::enable_if_t<!std::is_base_of_v<CallbackBase, T>, int> = 0,
-              typename... BArgs>
+              typename... BArgs,
+              std::enable_if_t<!std::is_base_of_v<CallbackBase, T> &&
+                                   std::is_invocable_r_v<R, T, BArgs..., UArgs...>,
+                               int> = 0>
    Callback(T func, BArgs... bargs)
    {
        // store the function in a std::function object