TDBEdit / Dataset / SetFocus / VK_DELETE / WTH

[Attila Kovacs 617]

Can someone tell me what the % is going on in this example?

An MCVE where TDBEdit or TDataset or the DataLink goes into a strange state in a message storm.

 

Changing Dataset's ReadOnly property between SetFocuses results in a state where VK_DELETE still deletes the text,

and in an 'dataset not in edit or insert mode' on exiting the modified editbox.

 

Tested in 10.1 U2, maybe already fixed?

 

pack.7z

[Uwe Raabe 1888]

If it is related to TCustomEdit executes VK_DELETE while observer forbids it should be fixed in 10.3.2

[Attila Kovacs 617]

@Uwe Raabe There are no observers involved, LEditLink is False, it must be something else.

[Attila Kovacs 617]

Well, it's more complicated as I thought.

I've put 4 different DBEdit components from different vendors onto the form.

If I keep pressing ctrl-f1 and in the meantime I'm changing the focus with the mouse to one of the edit boxes, the VK_DELETE keeps still executed when

the dataset is in ReadOnly state.

 

The same happens with TDBMemo so I assume with all DB-Controls.

 

10.2 seems to be OK. Phew...

 

Ok found it. I assume there will be never a hotfix for Berlin.

 

Edited October 15, 2019 by Attila Kovacs