QKeySequence myKeySequence; if (myKeySequence.isEmpty()) { // Do something if the key sequence is empty } else { // Do something else if the key sequence is not empty }
QKeySequence myKeySequence("Ctrl+S"); if (myKeySequence.isEmpty()) { // Do something if the key sequence is empty } else { // Do something else if the key sequence is not empty }In this example, we initialize a QKeySequence object called myKeySequence with the string "Ctrl+S". We then use the isEmpty() function to check if this key sequence is empty or not. If it is empty, we do something. If it is not empty, we do something else. Package library: This function is part of the Qt library, specifically the QtGui module.