Powerbuilder multiple dropdown listbox selection issue -


here scenario i'm having issues with: have 4 dropdown list boxes (ddlb), each has same 4 elements (horse, dog, cat, mouse). user can select 1 , 1 item each ddlb can change minds.

for example: select dog in first ddlb , cat in second ddlb. when third ddlb can still select dog if do, need deselect dog first ddlb. basically, selection of 1 element in 1 drop down list box causes deselection of element in other drop down list boxes.

i'm not quite sure how go creating solution scenario. i'm using pb12.5 , non-pfc.

thanks in advance.

you have programmatically. have place code in itemchanged() event each field , values each field , validate current value of field.


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