invoke_required()

virtual bool xtd::isynchronize_invoke::invoke_required ( ) const

pure virtualnoexcept

Gets a value indicating whether the caller must call Invoke(Delegate, Object[]) when calling an object that implements this interface.

Returns

true if the caller must call xtd::isynchronize_invoke::invoke; otherwise, false.

Remarks

This property determines whether the caller must call xtd::isynchronize_invoke::invoke when making method calls to an object that implements this interface. Such objects are bound to a specific thread and are not thread-safe. If you are calling a method from a different thread, you must use the xtd::isynchronize_invoke::invoke method to marshal the call to the proper thread.

Implemented in xtd::forms::control.