Gus Wirth wrote:
I've been playing around with some video stuff and became curious about
the XvPutVideo function. The function has a man page, and my video card
supports the function directly as shown by the output of xvinfo. From
the man page:
XvPutVideo(3x)
Name
XvPutVideo - write video into a drawable
Syntax
#include <X11/extensions/Xvlib.h>
XvPutVideo(dpy, port, d, gc, vx, vy, vw, vh, dx, dy, dw, dh)
Display *dpy;
XvPortID port;
Drawable d;
GC gc;
int vx, vy, dx, dy;
unsigned int vw, vh;
unsigned int dw, dh;
So my question is: How do I find where Display, XvPortID, Drawable, and
GC are declared? I have tried to grep through the header files and it is
an overwhelming problem. Is there some search technique I can use? Or
perhaps build some tiny app and use a debugger to tell me where the
stuff comes from?
use ctags, luke...:
find /usr/X11/include/. -name '*.h' -print | xargs ctags
vi -t Display
there is similar support in emacs (using either ctags or etags).
possibly other editors support it too.
'man ctags' for an explanation of what it does.
in vim, there are short-cuts to looking up the decleration of the
symbol on which you stand, and moving back to where you came from (in a
stack-like manner).
there's also a tool called 'cscope' for this - it works in a different
mode (it opens the editor, not the other way around).
--guy
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