<div dir="ltr"><div>Is there a way to check if a variable within a structure is available?</div><div><br></div><div><br></div><div>Example:</div><div><br></div><div>There is a structure handle containing different variables.</div><div><br></div><div><br></div><div>e.g:</div><div><br></div><div>handles.status // contain Status info of different pushbuttons --> in fact status is a structure itself: handles.Status.pb1; handles.Status.pb2; </div><div>handles.I_ORG // contains original Image --> array</div><div>handles.I_RES // contains resulting Image --> array</div><div><br></div><div><br></div><div>Now I want to check if handles.I_RES existst</div><div><br></div><div><br></div><div><br></div><div>exists('handles.I_RES' , 'a') will return "0" even if handles.I_RES does exist</div><div><div>isdef ('handles.I_RES' , 'a') will return "F" even if handles.I_RES does exist</div></div><div><br></div><div><br></div><div>Thank you,</div><div>Philipp<br clear="all"><br>-- <br></div><div class="gmail_signature"><div dir="ltr"><div>In Kanada is' ka' na' da. Sonst wär' Kanada Jemanda.</div><div><br></div><div>There we have the salad.</div></div></div>
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