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function IsTCADFile(FileName:String):Boolean;

 

 

       

Description:

 

Determine a file is in TCAD file format or not .

 

 

Example:

 

if MyCAD1.IsTCADFile( OpenDialog1.FileName) then

begin

    if not MyCAD1.LoadFromFile(OpenDialog1.FileName) then

       ShowMessage('Error when read file');

  end

  else

  ShowMessage(OpenDialog1.FileName +'is not a TCAD format file');

end;