1   
2   #include<shellapi.h>
3   
4   //
5   // Returns >0 if taskbar auto hide is on.
6   //
7   int IsTaskbarAutoHideOn()
8   {
9     APPBARDATA ABData;
10  
11    ABData.cbSize = sizeof(ABData);
12  
13    return
14      SHAppBarMessage(ABM_GETSTATE, &ABData)
15      & ABS_AUTOHIDE;
16  }
17  
18