Unusual ComboBox & FlatEdit Interaction

Hi,

I've discovered an unusual interaction between the CJ ComboBox and FlatEdit controls.

If you place 1 of each on a form, and then add code to make the FlatEdit visible only when certain ComboBox items are selected, then when the FlatEdit will steal the focus from the ComboBox on a subsequent press of the down arrow key.

I've attached a sample project. When loaded, the FlatEdit is invisible and the ComboBox has item "A" selected:

1) Press the down arrow key in the ComboBox and "B" will be selected and the FlatEdit will appear.
2) Press the down arrow again and the FlatEdit will steal the focus and display a messagebox (from its GotFocus event).
3) Try stopping the project and replacing the CJ FlatEdit with a standard VB TextBox of the same name. Re-run the sample and continued presses of the down arrow key will simply cycle through the items in the ComboBox (that is, the focus will not be stolen).

Any ideas?

uploads/20080531_184100_FocusBug.zip

Hi Aaron,

It might be related to that problem (I have tried as you suggested and I see the behaviour you describe). The only difference I can see is that the FlatEdit takes the focus away from the ComboBox when you press the down arrow key, but it doesn't take the focus away when you click the drop-down button with the mouse.

Also, neither bug is present when you replace the FlatEdit with a standard VB TextBox...(I've also tested it with other CJ controls such as the CheckBox, OptionButton, ListView, etc... and the bug is present when any of them are used).

This is still unresolved in the 12.1 beta. Any chance of a fix?