On 08/10/2009 04:16 PM, Abdelrazak Younes wrote:
On 10/08/2009 22:11, Pavel Sanda wrote:
Abdelrazak Younes wrote:
This code works and is not the problem. I don't remember the
details but
the original image is also stored somewhere else in the graphics
cache,
AFAIR.
which doesn't help me to understand what '// Clear the pixmap to
save some
memory'
means :)
It means "Here we clear the pixmap 'original_' to save the memory
that it
occupies"; I don't know to express it in a better way...
maybe its just too late for me today and missing something obvious...
but
why i see huge memory difference for the code
if (is_transformed_)
{
original_.~QImage();
original_ = QImage();
}
and for
if (is_transformed_)
original_ = QImage();
if the second one is intended to clear that pixmap?
Because the original_ pixmap has a shadow copy somewhere else deep
inside our graphics system. So deep that it's basically a nightmare to
retrieve it at this point. When you call the destructor this shadow
copy is of course erased at the same time. This explain why you get a
crash at exit.
Can you explain what you mean by "shadow copy" here? Do you mean there
is some other variable that points to it, or contains a reference to it,
or something of the sort?
rh
