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...determine if two icons are equal?
Autor: Thomas Stutz
[ Print tip ]  

Tip Rating (4):  
     


function IconsAreEqual(const Icon1, Icon2: TIcon): Boolean;
var
  
ms1: TMemoryStream;
  ms2: TMemoryStream;
begin
  
Result := False;
  ms1    := TMemoryStream.Create;
  try
    
Icon1.SaveToStream(ms1);
    ms2 := TMemoryStream.Create;
    try
      
Icon2.SaveToStream(ms2);
      if ms1.Size = ms2.Size then
        
// Compare the streams, Streams vergleichen:
        
Result := CompareMem(ms1.Memory, ms2.Memory, ms1.Size)
      finally
        
ms2.Free
    end
  finally
    
ms1.Free
  end
end
;

procedure TForm1.Button1Click(Sender: TObject);
var
  
icon1: TIcon;
  icon2: TIcon;
begin
  
icon1 := TIcon.Create;
  icon2 := TIcon.Create;
  try
    
icon1.LoadFromFile('c:\Icon1.ico');
    icon2.LoadFromFile('c:\Icon2.ico');
    if IconsAreEqual(icon1, icon2) then
      
ShowMessage('Icon 1 and Icon 2 match')
    else
      
ShowMessage('Icon 1 and Icon 2 don''t match');
  finally
    
icon1.Free;
    icon2.Free;
  end;
end;


 

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