更新LiveCode进度条会出错

Question

我想加载文件列表并更新进度条，但更新拇指位置时出错。代码没问题当我单击应用按钮 - 导致错误的原因是什么？

-- update the progress bar with current file number
on set_progress new_value
  set the thumbposition of "progress" to new_value
end set_progress

Answer 1

您只需指定“progress”是滚动条控件。将其称为

scrollbar "progress"

而不仅仅是

"progress" 

工作处理程序是;

-- update the progress bar on screen
on set_progress new_value
   set the thumbposition of scrollbar "progress" to new_value
end set_progress