On 22.05.2017 15:57, Graeme Geldenhuys via Lazarus wrote:
On 2017-05-08 17:46, zeljko via Lazarus wrote:
Just to be sure that control actually can take focus put this
ControlStyle := ControlStyle - [csNoFocus];
into constructor of your control.
And what if that doesn't work? I've set that in the constructor, but
still it doesn't receive keyboard focus (after I've clicked on the
custom control)?
What else can I try?
eg:
I have a PageControl which contains my custom control. I then have a
treeview on the right. If the treeview had focus, and I click on my
custom control and then press some keys (eg: Up/Down) then the focused
node in the treeview changes. Keyboard focus doesn't seem to want to
move to the custom control.
ps #2:
Interacting with a mouse on my custom control seems to work (but
then I have SetFocus in the MouseDown too).
Zeljko was wrong in his statement. The csNoFocus is just a helper flag
that custom controls should follow but don't have to. TWinControl
directly doesn't do anything. with csNoFocus - it doesn't have any
meaning for it.
Follow my instruction from my previous email in this thread:
If you mean receiving focus by clicking on it then yes, you need to call
SetFocus in MouseDown. It's also a good idea to check the csNoFocus flag
(from ControlStyle property).
For an example look how it is done in TCustomDBGrid.MouseDown.
+ The control can always get focused by the Tab key, if TabStop=True.
Ondrej
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