LoggingCategory QML Type

Defines a logging category in QML. 更多...

import 语句：

import QtQml

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特性

defaultLogLevel : enumeration
name : string

详细描述

A logging category can be passed to console.log() and friends as the first argument. If supplied to the logger the LoggingCategory's name will be used as logging category. Otherwise the default logging category will be used.

import QtQuick
Item {
    LoggingCategory {
        id: category
        name: "com.qt.category"
        defaultLogLevel: LoggingCategory.Warning
    }
    Component.onCompleted: {
        console.log(category, "log message");
        console.warn(category, "warning message");
    }
}

By default this outputs only com.qt.category: warning message 。 log message is suppressed due to the defaultLogLevel . You can, however, configure log levels for QML logging categories the same way you can configure them for QLoggingCategory .

注意： As the creation of objects is expensive, it is encouraged to put the needed LoggingCategory definitions into a singleton and import this where needed.

另请参阅 QLoggingCategory .

特性文档编制

defaultLogLevel : enumeration

Holds the default log level of the logging category. By default it is created with the LoggingCategory .Debug log level.

The following enumeration values are available:

They mirror the values of the QtMsgType 枚举。

注意： This property needs to be set when declaring the LoggingCategory and cannot be changed later.

另请参阅 QtMsgType .

name : string

Holds the name of the logging category.

注意： This property needs to be set when declaring the LoggingCategory and cannot be changed later.

另请参阅 QLoggingCategory::categoryName ().