TwwDBLookupComboDlg with composite keys

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Antoine GS

• July 21, 2021 17:31

Hi,

I am having issues with TwwDBLookupComboDlg when using composite keys (ie: LookupField := 'ID1;ID2').

When the key is empty (LookupValue is empty), DisplayValue still shows a string, most likely the first record in the dataset.

I attempted to fix this behaviour from outside the component but I am unable to change DisplayValue as it will be reassigned in the setter by doing something like:

if (component.lookupvalue = '') and (component.displayvalue <> '') then 
  component.displayvalue := '';

Anyone has any ideas or run into this issue and found a workaround?

I am on Delphi 2010, the InfoPowerStudio installer version is 2010.4455.0.0

 

Thanks!

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• 

  Roy Woll

  • July 25, 2021 18:16

  Try setting the text property. This is what is displayed.

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  Antoine GS

  • July 26, 2021 14:50

  Well that was a whole lot easier than I had made it to be... 

  Thanks a whole lot!!

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