1   
2   //---------------------------------------------------------------------------
3   
4   #include <vcl.h>
5   #pragma hdrstop
6   
7   #include "Unit1.h"
8   //---------------------------------------------------------------------------
9   #pragma package(smart_init)
10  #pragma resource "*.dfm"
11  TForm1 *Form1;
12  //---------------------------------------------------------------------------
13  __fastcall TForm1::TForm1(TComponent* Owner)
14          : TForm(Owner)
15  {
16  }
17  //---------------------------------------------------------------------------
18  
19  
20  void __fastcall TForm1::Button1Click(TObject *Sender)
21  {
22  
23  long i;
24  
25   i =GetWindowLong(ListBox1->Handle,GWL_STYLE);
26   if ((i & WS_VSCROLL)){
27    ShowMessage("Scrollbar Visible");
28   }
29   else {
30    ShowMessage("Scrollbar NOT Visible");
31    };
32  
33  }
34  //---------------------------------------------------------------------------
35