Exemple

L'exemple suivant montre comment enregistrer un objet fourni par l'application pour recevoir une notification des événements de frappe de l'opérateur. Reportez-vous à Classe ECLKeyNotify pour un exemple de RegisterKeyEvent.

// This is the declaration of your class derived from ECLKeyNotify.... class MyKeyNotify: public ECLKeyNotify { public: // App can put parms on constructors if needed MyKeyNotify(); // Constructor MyKeyNotify(); // Destructor // App must define the NotifyEvent method int NotifyEvent(char KeyType[2], char KeyString[7]); // Keystroke callback private: // Whatever you like... }; // this is the implementation of app methods... int MyKeyNotify::NotifyEvent( ECLPS *, char *KeyType, char *Keystring ) { if (...) { ... return 0; // Remove keystroke (filter) } else ... return 1; // Pass keystroke to emulator as usual } } // this would be the code in say, WinMain... ECLPS *pPS; // Pointer to ECLPS object MyKeyNotify *MyKeyNotifyObject; // My key notification object,derived // from ECLKeyNotify try { pPS = new ECLPS('A'); // Create PS object for 'A' session // Register for keystroke events MyKeyNotifyObject = new MyKeyNotify(); pPS->RegisterKeyEvent(MyKeyNotifyObject); // After this, MyKeyNotifyObject->NotifyEvent() will be called // for each operator keystroke... } catch (ECLErr HE) { // Just report the error text in a message box MessageBox( NULL, HE.GetMsgText(), "Error!", MB_OK ); }