Question

我正在使用QML中的一个小消息对话窗口系统。为此，我使用带有Loader的容器来加载不同的消息（这些消息不仅仅是文本，而是放置文本和图形符号，因此为每条消息加载QML文件）。默认情况下，这些消息窗口具有相同的大小，因此我直接在容器中包含我的大小信息。但是有些消息可能会更长，因此如果超出默认值，我正在寻找一种方法来使用我加载的组件的height。我认为我的问题可以分为三个部分：

如何根据子女的尺寸设置容器尺寸？
如何通过Loader对象访问已加载组件的大小信息？
如何有选择地使用更大尺寸？

有什么建议吗？

Answer 1

您可以使用item keyword访问加载的对象。例如，如果您的加载程序ID为idLoader，则创建的项目为idLoader.item，您有2个解决方案可以执行您想要的操作：

1：如何通过我的loader对象访问加载组件的大小信息？

Loader{
id:idLoader
width: (item !== null && typeof(item)!== 'undefined')? item.width : 0
height: (item !== null && typeof(item)!== 'undefined')? item.height: 0
}

2：如何根据孩子的尺寸设置容器尺寸？＆安培;如何选择性地使用更大的尺寸？

  Loader{
        id:idLoader
        width: childrenRect.width
        height : childrenRect.height
        }

Answer 2

这是一个未经测试的想法。取儿童首选身高或硬编码最小值的最大值，以较大者为准。

    'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\Program Files\WindowsApps\Microsoft.WindowsPreview.Kinect.8.1_2.0.1410.19000_x86__8wekyb3d8bbwe\WindowsPreview.Kinect.winmd'. Module was built without symbols.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Diagnostics.Debug\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Diagnostics.Debug.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.Globalization.winmd'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Collections\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Collections.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.Foundation.winmd'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.WindowsRuntime.UI.Xaml\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.WindowsRuntime.UI.Xaml.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Threading\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Threading.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.ObjectModel\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.ObjectModel.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.Storage.winmd'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\system32\WinMetadata\Windows.Data.winmd'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.IO\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.IO.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization.Xml\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Runtime.Serialization.Xml.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\SMDiagnostics\v4.0_4.0.0.0__b77a5c561934e089\SMDiagnostics.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.ServiceModel.Internals\v4.0_4.0.0.0__31bf3856ad364e35\System.ServiceModel.Internals.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Cannot find or open the PDB file.
'App14.exe' (CLR v4.0.30319: Immersive Application Domain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Cannot find or open the PDB file.
The program '[9472] App14.exe' has exited with code 1 (0x1).

装载机尺寸取决于来源

2 个答案: