asked on

Problem with TAB on a form

On form1 I drop about 10 Edit Controls. I move to controls with TAB key. When I'm on the 10th edit, I go to the first with tab.OK.

Next, I create form2 as child (like a toolbar) of form1.
Now , when I'm on the 10th edit, if I press TAB, I go to the form2, then (next tab) to the first edit.

How avoid this ?
How exclude the form2 from the "tab circle" ?
I want to never set the focus to the form2 when I press TAB.

ASKER CERTIFIED SOLUTION

vladika

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jpdupont

ASKER

A form had a TabStop property ???

vladika

Yes, in run-time mode

Any WinControl has TabStop property (see in help)
Some controls has public TabStop property
others controls has published TabStop property

Form has PUBLIC TabStop property

write handler OnFormCreate
Form.TabStop := False;

vladika

Also you can override procedure GetTabOrderList(List: TList)

For example
type
TForm1 = class(TForm)
public
procedure GetTabOrderList(List: TList); override;
end;

var
Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.GetTabOrderList(List: TList);
var
I: Integer;
P: TWinControl;
begin
inherited GetTabOrderList(List);
if (ActiveControl = nil) or (ActiveControl.Parent = nil) then Exit;
P := ActiveControl.Parent;
for I := List.Count-1 downto 0 do
if P <> TControl(List[I]).Parent then List.Delete(I);
end;
// In this example "tab circle" is controls which have same parent as ActiveControl

jpdupont

ASKER

Vladika,

Thanks for the help.
1/I just try the TabStop property (OnCreate ...) : don'twork.
2/I see your comment, and I try this as soon as possible.

Thanks again
Jean-Pol

jpdupont

ASKER

Hi,
Your code don't work.
I put this in the code to create a child window :

procedure TWCombo.CreateParams(var Params: TCreateParams);
begin
inherited CreateParams(Params);
with Params do begin
Style := (Style or WS_CHILD) and (not WS_POPUP);
WndParent := Application.MainForm.Handle;
end;
Parent := Application.MainForm;
end;

Correct ?

Regards,
JP

vladika

Hi!

1) From which is TWCombo inherited?
2) Is TWCombo design-time component?
3) I think CreateParams should look as

procedure TWCombo.CreateParams(var Params: TCreateParams);
begin
  inherited CreateParams(Params);
  with Params do
    Style := (Style or WS_CHILD) and (not WS_POPUP);
end;

. and when you create TWCombo ...
W := TWCombo.Create(Form1);
W.TabStop := False;
W.Parent := Form1;
......... W initialization (set height, width etc)........

4) if you wish you can send me program by email demon@dezcom.mephi.ru or
Dmitri_Ulitski@dialogbank.com and I try to help you
5) sorry for english :)

vladika

Answer is
1) use TabStop property to exclude/include control from/in "tab circle"
2) use GetTabOrderList for full "tab circle" control