Does the taskbar automatically hide?

Windows with Delphi
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Does the taskbar automatically hide?

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To determine the size of the available screen estate in Delphi 3 or earlier, you need to know whether the taskbar is visible or not.
Here's a simple function to check for this:

//------------------------------------------
//  Returns TRUE if taskbar auto hide is on.
//
//  if IsTaskBarautoHideOn then
//  begin
//    .. auto hide is ON ..
//  end;
//------------------------------------------
function IsTaskbarAutoHideOn : Boolean;
var 
  ABData : TAppBarData; 
begin 
  ABData.cbSize := SizeOf (ABData); 
  result := (SHAppBarMessage (ABM_GETSTATE, ABData) and ABS_AUTOHIDE) > 0 
end;

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