Hi,

Some time ago I noticed that my source editor's caption changed form "Source Editor" to "Source Editor <2>", and then it would change back again.
(I think it is a feature of my WM to add <2> to the caption of the window, if another window with the same caption already exists. I use KDE and have Lazarus built for GTK2)

However, I never saw 2 instances of the source editor.

Then some time later, Lazarus caused some floating point error, and I was offered the choice to exit or continue. I chose continue, and to my surprise I now really had 2 source editors!

I noticed that every time I open (or create) another project, the caption of the source editor is changed.
So it seems that for each project a new instance of a source editor is created, and then the old one is destroyed?

I don't remember seeing the caption of the source editor change some months ago. IMHO it doesn't look very "professional" (please do not feel offended!).

Can this behaviour be prevented/fixed in any way?

Bart

angel brackets ? Not round ones () ?

That is odd. Because the new one is only created, after the first one is hidden. So you should not have 2 at that time.

Maybe you have a project, or project default or something that wants 2 Source-Editors? So that would cause it to be named "SourceEditor (2)" round brackets.

Lazarus supports multiply open editor windows.

I noticed that every time I open (or create) another project, the caption of the source editor is changed. So it seems that for each project a new instance of a source editor is created, and then the old one is destroyed?

old.hide
new.create / new.show
old.destroy

see below

If you close a project, then all files are closed, so all tabs are removed from the editor, and the window is closed. Then a new one is created.

The only thing is, this may have been triggered by a key or mouse click that is handled by the source-editor window. For example, if you pressed a key combo to open another project, while the source editor was focused, then the windows onKey handler is called, and the entire close/opening is called from within that key-handler.

So the window (LCL class) can not yet be destroyed, it may still be executed. Therefore when all tabs are closed the first source editor window is Closed (as in hide) but not destroyed. It will be scheduled for destruction and released as soon as it is safe.

I am not sure how the GTK or QT widgetset handle hidden windows. So I can't comment on the rest.
Seems that your window manager detects

I have noticed the same behaviour at times, but can assure you that I never open multiple editor windows.

It's not a real problem, just a freakish feature :-)

Michael.

Martin wrote

angel brackets ? Not round ones () ?

Yes, angle brackets indeed.

Maybe you have a project, or project default or something that wants 2 Source-Editors? So that would cause it to be named "SourceEditor (2)" round brackets.

I don't think that is the case.
It happens on newly created projects too.

old.hide new.create / new.show old.destroy

I think my WM still detects the hidden window.

If I am the only one "suffering" from this then: never mind. Otherwise we could do:

old.hide
old.caption := ''
new.create
new.show
old.free

Bart

That needs to be carefully tested.

the IDE's layout storage reads the forms caption, and uses this. So if it gets modified, it may cause trouble....

It uses the name.
Where does it use the caption?

Mattias

Maybe I was wrong, I wrote that from memory... Will need to check