[solved - partial] Clipboard clear not working in app

[AlistairG]

Hi if I have something in the clipboard prior to app instantiation, then its showmessage below:

procedure Tmainform.FormCreate(Sender: TObject);
begin
clipboard.Clear;
clipboard.astext:=''; //should not be necessary but still doesnt work.
showmessage(clipboard.AsText); //still shows previous content!

Anyone can suggest what I am doing wrong?
Tks vm.

[typo]

It works for me (only clipboard.astext:='').

Lazarus 0.9.29 r28656 FPC 2.5.1 i386-win32-win32/win64

[AlistairG]

It works for me.

Yes I made up another wee test program and it seemed to work there OK, but I cant for the life of me see where the previous clipboard info is reinstated during formcreate eg the line following clipboard.clear surely it should be clear at that point.
I'll keep trying and advise.

[AlistairG]

Im going to have to stop editing my files before posting. Here is the original which did not clear:
procedure Tmainform.FormCreate(Sender: TObject);
begin
TrayIcon1.Icon.Assign(Application.Icon);
TrayIcon1.Show;
Application.OnHint := @ShowHint;
ShowScrollBar(listbox1.Handle, SB_BOTH, false);
clipboard.Clear;
clipboard.astext:='';
Listbox1.clear

//here is what works note the new position of clipboard.clear
procedure Tmainform.FormCreate(Sender: TObject);
begin
clipboard.Clear;
clipboard.astext:=''; //this is still required
TrayIcon1.Icon.Assign(Application.Icon);
TrayIcon1.Show;
Application.OnHint := @ShowHint;
ShowScrollBar(listbox1.Handle, SB_BOTH, false);
listbox1.Clear;

[AlistairG]

Anyone having probs with clipboard keep an eye on this one.
Clipboard.clear does not do the job if there is text on the clipboard. If you assign '' as text it then seems to remove CF_TEXT from the clipboard.
Suggest create your clipboard in formcreate eg myclipboard.create, even though you have access to a default board named clipboard, seems creation of a new object makes it work better.

[typo]

Opening the clipboard before clearing it seems to work for me.

[AlistairG]

Opening the clipboard before clearing it seems to work for me.

Cheers Typo. What I am finding is that if I clipboard.open;clipboard.clear;clipboard.close;
Then try to use the clipboard as normal it does not behave. EG if I copy some text afterwards, then myapp will not see the copied text.
I have been having a lot of trouble with the clipboard over the last 2 days, which I never had before in delphi. Its either:
1..me
2..difference between gtk2 and windows
3..clipboard has some underlying problems.

Cheers,
Alistair.