Hubert Figuiere wrote:
On 04/17/2009 02:16 AM, S. Wittenberg wrote:
I tried to access the wrapped gdkpixbuf inside the Gdk::Pixbuf, but i
get this, even if i #include the right header file (just to be sure):
connection.cpp: In member function ‘Glib::RefPtr<Gdk::Pixbuf>
Connection::getBuffer()’:
connection.cpp:336: error: invalid use of incomplete type ‘struct
_GdkPixbuf’
/usr/include/gtk-2.0/gdk-pixbuf/gdk-pixbuf-core.h:55: error: forward
declaration of ‘struct _GdkPixbuf’
My code looks like this:
frame_buffer = Gdk::Pixbuf::create_from_data(....);
frame_buffer->gobj()->n_channels = 4;
GdkPixbuf is an opaque structure. You are not able to access its
fields directly.
Hub
Thanks for your answer.
Let me rephrase my request:
I got a framebuffer thats RGBA, but otherwise compliant to the requests
of the pixbuf.
The gdkpixbuf seems to be capable of utilizing RGBA, while the
Gdk::Pixbuf isnt...
Even if i set has_alpha to true, it wont work... in fact, if i do this,
it wont work at all.
So i have to strip the buffer from the alpha channel, but thats quite
expensive and necessary
many times per second since i display various vnc-displays. If i could
access the gdkpixbuf
directly, just place my buffer there and set the corresponding fields, i
could save some
calculations.
Is there any intelligent and reasonable solution to this?
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