如何保持屏幕显示避免屏保和黑屏

本文演示如何使程序运行时屏幕常亮，避免屏保和黑屏

Introduction

使用QMl的ScreenSaver Element可以轻松的保持屏幕常亮

import QtMobility.systeminfo 1.1
 
ScreenSaver
{
   screenSaverDelayed:true
}

也可使用ScreenSaver自带的setScreenSaverDelayed(bool) 方法在适当的时候启动屏幕常亮，例如

import QtMobility.systeminfo 1.1
import com.meego 1.0
    ScreenSaver
    { 
        id:screenSaver
    } 
    Button{
        text: "on"
        onClicked:screenSaver.setScreenSaverDelayed(true)
        }
    }

注意使用Qt Mobility 在Pro文件中加入声明

CONFIG += mobility 
MOBILITY += systeminfo

代码示例：Media:Screensa.zip

相关链接

• Qt 开发
• Qt Quick (Chinese)
• Qt Mobility 开发

Article Metadata

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Tested with

SDK: Qt SDK 1.1.2

Devices(s): N8,N9

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Compatibility

Platform(s): Symbian^1 Symbian^3 Meego

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Article

Keywords: ScreenSaver

Created: flycarl ()

Last edited: hamishwillee (13 Jun 2012)