ZK Spreadsheet Essentials/Working with Spreadsheet/Handling Events/Key Event

• onCtrlKey

  This event is fired when a user presses a key specified in ctrlKeys attribute. By default, Spreadsheet handles keys including ctrl+x, ctrl+c, ctrl+v, ctrl+d, ctrl+b, ctrl+i, ctrl+u, and delete key without setting ctrlKeys. If you want to override the default setting, please remember to append these default control keys (^X^C^V^D^B^I^U#del) to your setting. For example, if you want to support more keys like ctrl+a, you should set ctrlKeys to ^A^X^C^V^D^B^I^U#del. Thus, you can still benefit from default key handling function. For syntax to set ctrlKeys, please refer to ZK Developer's Reference/UI Patterns/Keystroke Handling. When the corresponding event listener is invoked, a KeyEvent object is passed as an argument.

Example Code

In Event Monitor example, the messages show that ctrl+c is pressed first then ctrl+v. Let's see how to make it:

public class EventsComposer extends SelectorComposer<Component>{
	//omitted codes...

	@Listen("onCtrlKey = spreadsheet")
	public void onCtrlKey(KeyEvent event){
		StringBuilder info = new StringBuilder();
		
		info.append("Keys : ").append(event.getKeyCode())
			.append(", Ctrl:").append(event.isCtrlKey())
			.append(", Alt:").append(event.isAltKey())
			.append(", Shift:").append(event.isShiftKey());
		
		//display info...
	}
}

• Line 8~10: We can also know that control, alt, or shift key are pressed or not via KeyEvent.