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MSSQL howto catch a TMSSQLConnection Error without Messagebox?


On my Raspi i got on a TMSSQLConnection a messagebox if the server is not reachable. The connection is not my problem, but i am not able to cach this exeption silent without poping up this messagebox.

The problem is, the messagebox pops up and want an OK or ABORT.
In my code i catch the exception, set a flag and reraise

--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---    try      if IsOk then AConnection.Connected := true;    except      on E : Exception do begin        IsOk:=false;        raise;      end;    end; 
The calling function does this

--- Quote ---  Result := false;
    Result := true;
    on E : Exception do begin

--- End quote ---
So the exception should silent catched and i can handle if a connection is ok or not.

How can i avoid this unwanted box


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