Delphi中三种方法获取Windows任务栏的高度

第一种：需要引用Windows单元

ShowMessage(IntToStr(GetSystemMetrics(SM_CYSCREEN)-GetSystemMetrics(SM_CYFULLSCREEN)-GetSystemMetrics(SM_CYCAPTION)));

第二种：需要引用Windows单元

function GetSystemTaskBarHeight:Integer;
var
  R:TRect;
begin
  SystemParametersInfo(SPI_GETWORKAREA,0,@R,0);
  Result:=Screen.Height-R.Bottom;
end;

第三种：要引用ShellAPI单元

function GetTaskBarRect: Integer;
var
  TBData: TAPPBARDATA;
begin
  TBData.cbSize := SizeOf(TAPPBARDATA);
  SHAppBarMessage(ABM_GETTASKBARPOS, TBData);
  Result   :=Screen.Height-TBData.rc.Top;
end;

 

http://blog.csdn.net/chaijunkun/article/details/5577285