问题标签 [delphi-for-php]

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php - CodeGear Delphi For PHP - 为什么 readItemIndex() 返回 -1?

Window我打算使用对象 ( )创建一个对话框class Window extends QWidget

包含这些元素的对话框:

  • 一个列表框 ( ListBox1)
  • 2 个标签 ( Label1& Label2)
  • 一个按钮

onClick()列表框的功能:

这段代码的目的是从列表框中选择一个项目,然后显示 ( ListBox1Click) 它的索引Label1

However, when an item is selected, readItemIndex()returns numerical value `-1.

包含的项目ListBox1

例如,如果我dfdfwsf从列表框中选择,它应该返回 index/key 32432;而是-1返回。