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SWT桌有固定高度(SWT table with fixed height)

 我有一个像这样的简单SWT表，初始高度为60px：  
Table table = new Table(parent, SWT.BORDER | SWT.FULL_SELECTION);
GridData gd_table = new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1);
gd_table.heightHint = 60;
table.setLayoutData(gd_table);
table.setHeaderVisible(true);
 
 我是以编程方式添加行，当添加新行时，表的高度会增加，与UI的其余部分混乱，有没有办法为表设置固定高度，并且可能在行没有时添加滚动条t适合桌面高度？ 

I have a simple SWT table like this, with an initial height of 60px: 
Table table = new Table(parent, SWT.BORDER | SWT.FULL_SELECTION);
GridData gd_table = new GridData(SWT.FILL, SWT.FILL, true, true, 2, 1);
gd_table.heightHint = 60;
table.setLayoutData(gd_table);
table.setHeaderVisible(true);
 
I'm programmatically adding rows, when a new row is added the height of the table is increased messing with the rest of the UI, is there a way to set a fixed height to the table and maybe adding a scrollbar when the rows doesn't fit the table height?

原文：https://stackoverflow.com/questions/29976690

更新时间：2023-03-23 17:03

最满意答案

 为什么不跟随作者并使用额外的验证编写自己的扩展方法？  
 看看这里。 这是services.Configure<>的源代码services.Configure<>方法：  
namespace Microsoft.Extensions.DependencyInjection
{
  /// <summary>
  /// Extension methods for adding options services to the DI container.
  /// </summary>
  public static class OptionsServiceCollectionExtensions
  {
    ...

    /// <summary>
    /// Registers an action used to configure a particular type of options.
    /// </summary>
    /// <typeparam name="TOptions">The options type to be configured.</typeparam>
    /// <param name="services">The <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection" /> to add the services to.</param>
    /// <param name="configureOptions">The action used to configure the options.</param>
    /// <returns>The <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection" /> so that additional calls can be chained.</returns>
    public static IServiceCollection Configure<TOptions>(this IServiceCollection services, Action<TOptions> configureOptions) where TOptions : class
    {
      if (services == null)
        throw new ArgumentNullException("services");
      if (configureOptions == null)
        throw new ArgumentNullException("configureOptions");
      services.AddSingleton<IConfigureOptions<TOptions>>((IConfigureOptions<TOptions>) new ConfigureOptions<TOptions>(configureOptions));
      return services;
    }
  }
}
 
 如您所见， Configure<TOptions>方法是一种扩展方法。 只需编写自己的ConfigureAndValidate<TOptions>()说ConfigureAndValidate<TOptions>()扩展方法，它将在services.AddSingleton... line之前进行适当的验证。 

Why not to follow the authors and write your own extension method with additional validation? 
Take a look here. This is the source code of services.Configure<> method: 
namespace Microsoft.Extensions.DependencyInjection
{
  /// <summary>
  /// Extension methods for adding options services to the DI container.
  /// </summary>
  public static class OptionsServiceCollectionExtensions
  {
    ...

    /// <summary>
    /// Registers an action used to configure a particular type of options.
    /// </summary>
    /// <typeparam name="TOptions">The options type to be configured.</typeparam>
    /// <param name="services">The <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection" /> to add the services to.</param>
    /// <param name="configureOptions">The action used to configure the options.</param>
    /// <returns>The <see cref="T:Microsoft.Extensions.DependencyInjection.IServiceCollection" /> so that additional calls can be chained.</returns>
    public static IServiceCollection Configure<TOptions>(this IServiceCollection services, Action<TOptions> configureOptions) where TOptions : class
    {
      if (services == null)
        throw new ArgumentNullException("services");
      if (configureOptions == null)
        throw new ArgumentNullException("configureOptions");
      services.AddSingleton<IConfigureOptions<TOptions>>((IConfigureOptions<TOptions>) new ConfigureOptions<TOptions>(configureOptions));
      return services;
    }
  }
}
 
As you can see Configure<TOptions> method is an extension method. Simply write your own let say ConfigureAndValidate<TOptions>() extension method which will do proper validation before services.AddSingleton... line.

SWT桌有固定高度(SWT table with fixed height)

最满意答案

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