Owh....
sorry for my bad english... what I mean was, I create my own component
derived from TWinCOntrol, and inside that TWinControl I added
TDateTimePicker (that's why I set TDateTimePicker Parent to Self).
Last night I recognized that the TDateTimePicker always be painted
behind TTabSheet. When I moved the TPageControl, I saw that
TDateTimePicker behind TPageControl (painted on TForm).
unit dtp;
interface
uses
SysUtils, Classes, Controls, StdCtrls, ExtCtrls, ComCtrls, MConnect,
UnitEncryption, Dialogs,
Unit_MessageDialog, Messages, Types, Graphics, Windows;
type
Tdtp = class(TWinControl)
private
{ Private declarations }
DateTimePicker1 : TDateTimePicker;
...
...
protected
{ Protected declarations }
...
...
public
{ Public declarations }
Constructor Create(AOwner : TComponent); OverRide;
Destructor Destroy; OverRide;
...
...
published
{ Published declarations }
...
...
end;
Const
Hijau = $00C4FFC7;
Merah = $00D5D5FF;
procedure Register;
implementation
Constructor Tdtp.Create(AOwner: TComponent);
Begin
Inherited Create(AOwner);
OnResize := OnComponentResize;
Height := 23;
Width := 121;
boolEnabled := True;
...
...
...
...
DateTimePicker1 := TDateTimePicker.Create(Self);
DateTimePicker1.Parent := Self;
DateTimePicker1.Left := 0;
DateTimePicker1.Top := 0;
DateTimePicker1.Align := alClient;
Try
DateTimePicker1.Font.Name := 'Verdana';
Except
End;
DateTimePicker1.Visible := True;
DateTimePicker1.TabStop := True;
DateTimePicker1.OnEnter := onDTPEnter;
DateTimePicker1.OnExit := onDTPExit;
OnComponentResize(Self);
...
...
...
...
Try
DateTimePicker1.Font.Size := 9;
Except
End;
End;
Destructor Tdtp.Destroy;
Begin
Inherited Destroy;
End;
...
...
...
...
...
...
procedure Register;
begin
RegisterComponents('NOSTOC', [Tdtp]);
end;
end.
On 8/6/10, Robert Jenkins <uss...@gmail.com> wrote:
> I think you need to set DateTimePicker1.Parent := [Your TWinControl]
> Not to self.
>
> Also, I think it works better to set the parent property last to avoid
> redrawing the DateTimePicker1 after each property gets set/updated.
>
> Robert
>
> On Fri, Aug 6, 2010 at 8:52 AM, David Smith <djsmith_1...@yahoo.com> wrote:
>
>>
>>
>> Also, your specifying the owner as a Tcomponent class, then referencing
>> Self as the owner of the instance of the constructor. Self refers to the
>> form which is why it's disappearing. You've got to reference the
>> TWinControl
>> which you chould create a variable for and reference that.
>>
>> Dave
>>
>> --- On Fri, 8/6/10, Niksen Harjanto
>> <niks...@gmail.com<niksenh%40gmail.com>>
>> wrote:
>>
>> From: Niksen Harjanto <niks...@gmail.com <niksenh%40gmail.com>>
>> Subject: [delphi-en] WTA - TDateTimePicker inside TWinControl is invisible
>> To: "delphi-en" <delphi-en@yahoogroups.com <delphi-en%40yahoogroups.com>>
>> Date: Friday, August 6, 2010, 1:32 AM
>>
>>
>>
>> Dear all...
>>
>> I have created my own custom component.
>>
>> It used TWinControl as it's "canvas" and a TDateTimePicker on top of it.
>>
>> When I dropped onto a TForm, everything was ok.
>>
>> But if I dropped it onto the TTabSheet (tab in TPageControl), the
>>
>> TDateTimePicker will visible ONLY WHEN I dropped it.
>>
>> If I close the application and then re-open it again, the
>>
>> TDateTimePicker will invisible.
>>
>> Is this a bug or I made some mistake?
>>
>> this is my script
>>
>> Constructor Tdtp.Create(AOwner: TComponent);
>>
>> Begin
>>
>> Inherited Create(AOwner);
>>
>> OnResize := OnComponentResize;
>>
>> Height := 23;
>>
>> Width := 121;
>>
>> boolEnabled := True;
>>
>> DateTimePicker1 := TDateTimePicker.Create(Self);
>>
>> DateTimePicker1.Parent := Self;
>>
>> DateTimePicker1.Left := 0;
>>
>> DateTimePicker1.Top := 0;
>>
>> DateTimePicker1.Align := alClient;
>>
>> // DateTimePicker1.Font.Name := 'Verdana'; // Error !!!
>>
>> // DateTimePicker1.Font.Size := 9; // Error !!!
>>
>> Try
>>
>> DateTimePicker1.Font.Name := 'Verdana'; // I made trick in here,
>>
>> and it works
>>
>> Except
>>
>> End;
>>
>> DateTimePicker1.Visible := True;
>>
>> DateTimePicker1.TabStop := True;
>>
>> DateTimePicker1.OnEnter := onDTPEnter;
>>
>> DateTimePicker1.OnExit := onDTPExit;
>>
>> OnComponentResize(Self);
>>
>> DateTimePicker1.OnChange := EventChange;
>>
>> DateTimePicker1.OnClick := EventClick;
>>
>> DateTimePicker1.OnCloseUp := EventCloseUp;
>>
>> DateTimePicker1.OnContextPopup := EventContextPopup;
>>
>> DateTimePicker1.OnDblClick := EventDblClick;
>>
>> DateTimePicker1.OnDragDrop := EventDragDrop;
>>
>> DateTimePicker1.OnDragOver := EventDragOver;
>>
>> DateTimePicker1.OnDropDown := EventDropDown;
>>
>> DateTimePicker1.OnEndDock := EventEndDock;
>>
>> DateTimePicker1.OnEndDrag := EventEndDrag;
>>
>> DateTimePicker1.OnKeyDown := EventKeyDown;
>>
>> DateTimePicker1.OnKeyPress := EventKeyPress;
>>
>> DateTimePicker1.OnKeyUp := EventKeyUp;
>>
>> DateTimePicker1.OnStartDock := EventStartDock;
>>
>> DateTimePicker1.OnStartDrag := EventStartDrag;
>>
>> DateTimePicker1.OnUserInput := EventUserInput;
>>
>> Try
>>
>> DateTimePicker1.Font.Size := 9; // I made trick in here, and it works
>>
>> Except
>>
>> End;
>>
>> End;
>>
>> Thank You.....
>>
>> --
>>
>> "Sabbe Satta Bhavantu Sukhitatta - Semoga Semua Makhluk Hidup Berbahagia"
>>
>> Se Hai Ce Nei, Kai Siung Ti Ye - Di Empat Penjuru Lautan, Kita Semua
>> Bersaudara
>>
>> Ko Ko Cay Siang - Yang Tinggi Masih Ada Pula Yang Melebihi Oleh Karena
>>
>> Itu Jangan Takabur, Jumawa, dan Terlalu Berbangga Diri
>>
>> Niksen - Pulsarian Bandung 782
>>
>> members of KORMOT COMMUNITY KC #008
>>
>> D 5470 WQ
>>
>> [Non-text portions of this message have been removed]
>>
>>
>>
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> -----------------------------------------------------
> Home page: http://groups.yahoo.com/group/delphi-en/
> To unsubscribe: delphi-en-unsubscr...@yahoogroups.comyahoo! Groups Links
>
>
>
>
--
"Sabbe Satta Bhavantu Sukhitatta - Semoga Semua Makhluk Hidup Berbahagia"
Se Hai Ce Nei, Kai Siung Ti Ye - Di Empat Penjuru Lautan, Kita Semua Bersaudara
Ko Ko Cay Siang - Yang Tinggi Masih Ada Pula Yang Melebihi Oleh Karena
Itu Jangan Takabur, Jumawa, dan Terlalu Berbangga Diri
Niksen - Pulsarian Bandung 782
members of KORMOT COMMUNITY KC #008
D 5470 WQ
