QLineEdit problem (Jambi)

[Binji]

First of all hello to everyone. Im still new to Qt but getting better

And now to my question.. i have a QLineEdit widget which must not be empty when user clicks a certain button. So i wrote this:

if (serverAddress.text().trim()!= "" && serverAddress.text().trim() != null) {
			serverNameValid = true;
		}else {
			errorMessage += "\nServer name cannot be empty!";
		}

if (serverAddress.text().trim()!= "" && serverAddress.text().trim() != null) {
			serverNameValid = true;
		}else {
			errorMessage += "\nServer name cannot be empty!";
		}

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Simple enough right? But the problem is.. it doesnt work! text() method never returns an empty string even if the QLineEdit widget is empty! Is there anything i missed?

Thanks for your reply

edit: I apologize if I shouldnt post Jambi stuff here but didnt see any other appropriate forum.