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typing issue in Combobox Delphi XE2

Posted on 2012-03-14
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Last Modified: 2012-06-27
Hi,

There is a Combobox with 100 items, is in a Delphi(XE2) form and both the drop down list and the auto complete is working fine while the user is typing the right text.

But when the users do a mistake and type a word which is not in the items then the auto complete does not perform well, especially when the users type fast, the form will be freeze, (not responding) and most of the times you end up shutting down the application.

Is there any solution to fix this.

Thanks
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Question by:navidj
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LVL 28

Expert Comment

by:Sinisa Vuk
ID: 37723623
maybe is delphi xe2 bug :-( do you have some code behind combobox onchange event?
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LVL 38

Expert Comment

by:Geert Gruwez
ID: 37724025
is it a db combobox ?
  with lookup dataset
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LVL 23

Expert Comment

by:Ferruccio Accalai
ID: 37729187
Try reducing the autocompletedelay value.
It's 500 ms by default, that means that the AutoComplete is performed starting from an empty filter when time between any keypress is >=  half  a second. If the user types fastest than the autocompletedelay time, then the procedure is executed again and again without reset of the internal filter and could crash into a form freezing.
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Accepted Solution

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navidj earned 0 total points
ID: 37750428
Thanks Guys,

It might be a bug,

I did try the delay time but no different,

but what I did was changing the style. the defoult style is "csDropDown" which has got this problem. Other  styles working fine.

I am now using "csDropDownList" and I am OK with that.
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by:navidj
ID: 37854992
Close it
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