Last FWH version. Memory leak.

[Antonio Linares]

I had also problem with memory leaks. For me they disappeared after I disabled

Code: Select all  Expand view

::oGet:SetFont( ::oFont )

at METHOD Initiate of CLASS TComboBox. In older version of FWH this line wasn't there.

Ruediger,

Instead of removing such code, please change the Method End() in Class TComboBox this way:

METHOD End() INLINE ::Hide(), If( ::oGet != nil, ::oGet:End(),), Super:End()

[IBTC]

Antonio,

Instead of removing such code, please change the Method End() in Class TComboBox this way:

METHOD End() INLINE ::Hide(), If( ::oGet != nil, ::oGet:End(),), Super:End()

Thanks. But with this change the problem with fonts/memory leak still exists.

[Antonio Linares]

Ruediger,

Could you please provide a small test to reproduce the memory leak here ? thanks

[James Bott]

I have had toolbar icons disappear due to memory leaks in the past. One way to test it is to create a memory leak intentionally so you can run the program and keep triggering the memory leak until the icons disappear.

James

[Antonio Linares]

You can easily check if an application is experiencing GDI objects handles leaking from here:



Trying to find the same option in Windows 8...

[Antonio Linares]

Found

[James Bott]

Antonio,

Will you explain what exactly you found?

James

[Antonio Linares]

James,

How to monitor the GDI objects consumed by an application, reported from the Windows task manager

If there is a GDI objects handles leaking, that amount will keep increasing

[Randal]

James,

How to monitor the GDI objects consumed by an application, reported from the Windows task manager

If there is a GDI objects handles leaking, that amount will keep increasing

Is this the type of memory problem they are reporting? Is this a GDI problem or some other kind of problem?

Thanks,
Randal

[Antonio Linares]

The problem is related with bitmaps, so it should be a GDI objects handles leaking issue

[James Bott]

I have the feeling that the disappearing bitmaps are just a symptom of a memory leak elsewhere. As I suggested earlier, I think this could be proven by creating an app with a toolbar, then running a loop that creates something like a font and doesn't destroy it. You might also have to re-display the toolbar occasionally to see the effect.

Regards,
James

[James Bott]

I re-read the earlier posts in this thread and I think this may be the problem.

I had also problem with memory leaks. For me they disappeared after I disabled

CODE: SELECT ALL EXPAND VIEW
::oGet:SetFont( ::oFont )


at METHOD Initiate of CLASS TComboBox. In older version of FWH this line wasn't there.
Best Regards,
Ruediger Alich

I don't have the 12.12 version of FWH so I can't look at the source, but there may be a font getting created and not destroyed.

Regards,
James

[Randal]

Wouldn't they be able to identify the problem as a font not being released or a gdi problem using checkres, if that were the problem?

Randal

[James Bott]

Wouldn't they be able to identify the problem as a font not being released or a gdi problem using checkres, if that were the problem? -Randal

I would think so.

Regards,
James

[James Bott]

I notice there is a similar discussion of vanishing bitmaps on toolbars back in Nov 2012 here:

http://forums.fivetechsupport.com/viewtopic.php?f=3&t=24329

James