On Aug 8, 2007, at 12:05 PM, Diego Conde Pérez wrote:
Hi,
First of all, good work!!! This library is incredible, I've been
dreaming for something similar for years.
I've been trying to use the libvlc (http://www.videolan.org)
throught jna, and it worked perfectly (divX inside a JFrame seems
to be a dream). The problem is that the only way that I can tell
the libvlc where it has to display the multimedia content is with a
drawable (Drawable on X11, CGrafPort on MacOSX, HWND on Win32).
Now, there is a method com.sun.jna.Native.getWindowPointer that
works well for JFrames, but if I want to put the video inside a
Canvas and I can't (well, actually I can but with JNI, and I use
jna to avoid this).
The solution seems to be simple, in the com.sun.jna.Native class
create the couterparts of getWindowPointer and getWindowHandle0, in
this case getCanvasPointer and getCanvasHandle0 (maybe a generic
getComponentPointer). I'm not completely sure, but I think that the
implementation of getCanvasHandle0 can be identical to
getWindowHandle0 because awt.GetDrawingSurface(env, w) can receive
a canvas instead of a window.
I think that this functionality can be really useful to embed
native display (I think that Gecko has a similar method).
Thanks again for this great job.
You're correct, getCanvasHandle would be no different than
getWindowHandle. The initial implementation was window-oriented and
hadn't been tested with any other AWT (heavyweight) components. You
might need some additional information (such as component offset from
native origin) if you pass in a lightweight (Swing) component,
though. Or just throw IllegalArgumentException on lightweights.
Feel free to submit an issue to add this to the next release, and if
you're inclined, some example and test code as well.
Thanks for the feedback,
T.
2 messages in net.java.dev.jna.usersRe: [jna-users] get the pointer for a...
