Call some topic in help file

Use HelpJump to call some topic from help file. In Edit component you may write topic title. For example, if you will write "TButton_Create" then you will call topic about Create method of TButton component from vcl3.hlp file.

  Application.HelpFile := 'C:\...\Help\VCL3.HLP';
  Application.HelpJump(Edit1.Text);