[Interest] QTimer pauses when window minimum

[Pritam Ghanghas]

Hi Cheng,

I think you are depending on update() to get the painting done. That may be optimized out. Or several paintEvents may be compressed into one if you have to force paint every 2seconds then call paint() directly in response to the timer.

Regards,
Pritam
________________________________
From: interest-bounces+pritam_ghanghas=infosys.com at qt-project.org [interest-bounces+pritam_ghanghas=infosys.com at qt-project.org] on behalf of Arunprasad Rajkumar [ararunprasad at gmail.com]
Sent: Thursday, March 14, 2013 10:06 AM
To: 程梁
Cc: Qt Interest
Subject: Re: [Interest] QTimer pauses when window minimum

>But when the window minimum QTimer stops and paintEvent() could not be called.
Whether your window is in minimized state?. When window is in minimized state it is not visible in screen. Then why you need a paint? Basically most of the windowing system optimizes by not sending paintevent when window is in minimized state.


On 14 March 2013 08:36, 程梁 <devbean at outlook.com<mailto:devbean at outlook.com>> wrote:
Hi, there! In my application I need to update UI every 2s. I use QTimer to implement this feature. But when the window minimum QTimer stops and paintEvent() could not be called. How could I solve this problem? Or could you tell me something else to get this feature?

Thank you!

Cheng Liang
Nanjing, China
http://www.devbean.net

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