>There are several checkbox in one form, then I put a container to enclose them all, of couse, its BackStyle is set to transparent.
>
>After running, those check boxes don't react to mouse click, although keyboard action, move down/up or spacebar press, is normal. Why? and how do I get rid of it?
>
>Thanks.

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Ru-Chuan,
BTW getting them in container would add a level in their referencing hierarchy. ie: if some checkbox were :
thisform.myCheckbox
it would become :
thisform.myContainer.myCheckbox (provided container's name is myContainer)
If you don't want it to happen then either send it to back, or better use a shape control (also send to back).
Cetin