use eventhandlers instead of PFH

addons/dragging/functions/fnc_handlePlayerWeaponChanged.sqf

@@ -0,0 +1,31 @@
+// by commy2
+#include "script_component.hpp"
+
+private ["_unit", "_weapon"];
+
+_unit = _this select 0;
+_weapon = _this select 1;
+
+if (_unit getVariable [QGVAR(isDragging), false]) then {
+
+    // drop dragged object when selecting a non-primary weapon
+    if (_weapon != primaryWeapon _unit) then {
+        private "_draggedObject";
+        _draggedObject = _unit getVariable [QGVAR(draggedObject), objNull];
+
+        [_unit, _draggedObject] call FUNC(dropObject);
+    };
+
+};
+
+if (_unit getVariable [QGVAR(isCarrying), false]) then {
+
+    // drop carried object when selecting any weapon
+    if (_weapon != "") then {
+        private "_carriedObject";
+        _carriedObject = _unit getVariable [QGVAR(carriedObject), objNull];
+
+        [_unit, _carriedObject] call FUNC(dropObject_carry);
+    };
+
+};