QLineEdit CPU usage

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Hi

Any thoughts on QLineEdit causing higher CPU usage while user inputs?

Also when it's read only, I am seeing paintEvent is getting called repeatedly..It should happen in case of NOT read only to show the cursor right? Any thoughts on optimizing QLineEdit for CPU would help...

SGaist

Hi and welcome to devnet,

Without more information about how you are using your QLineEdit it will be difficult to tell. Are you using a mask ? a validator ? Got it connected to a slot that does some heavy processing etc. ?

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Hi,

There's no input mask/ validator set.
Use case is while dialing digits in dialer input to dial phone no/Extn .

Yes,its connected to slots which updates UI elements like softkeys etc. but doesn't seem to be time taking at least from logs...

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One more info..on Phone (Linux) I've tried with built in QLineEdit (we'are using custom derived one) on phone..
Rapid input causes 40% CPU usage ensuring only QLineEdit Rect is getting painted.. I tested this with QT_ FLUSH_PAINT

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is it justifiable? Question for earlier post

SGaist

I find it surprising but since you are on a phone, what Qt version are you using ? What's the phone distribution ?