I'm using the QuickTime ActiveX control in a Windows XP C++ app using
the Qt framework.
Is there any way to get an image of a single frame? I'm doing
screengrabs for the moment, which is pretty hacky, though it works fine
(just for a preview).
One way is to use the CopyFrame(VARIANT Time) method of QTMovie to
put a grab of the specified frame on the clipboard. Then in Qt you
can easily use QApplication::clipboard() (or the Win32 clipboard
functions) to get the image in a useable format.
Something like:
VARIANT vTime;
VariantInit(&vTime);
V_I4(&vTime) = 0; // or whatever movie time you want e.g. PosterTime
movie->CopyFrame(vTime);
QPixmap pm = QApplication::clipboard()->pixmap();
if ( !pm.isNull() )
{
// Draw movie frame, etc.
}
Hope this helps.
_________________________________________________________
John Cromie
Skylark Associates Ltd. http://www.skylark.ie
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