Thanks for your kind reply. However, I still have some questions.
On Mon, 14 Feb 2005 22:02:21 +0100 (CET), Stephan Stapel
> > I am wondering what is the fastest way to display an Image in a QT widget.
> > It is just strajght forward painting. Rotation or resizing is not
> > necessary. It seems easy to do, but I failed to get a satisfactory
> > result.
> imho, the fastest way will be using a GL painter along with a texture/
> image cache in Qt4. Unfortunately, currently there is only a QPixmapCache
> implementation, Qt4 lacks a QImageCache implementation.
I can't quite understand this paragraph. Shall I upgrade to QT4, and then take
advantage of the GL painter? As I am stuck with QT3 right now, shall I use
> This would be definitely the fastest way (at least on Windows) since you
> can buffer large amounts of images without having to pay attention for the
> ability of HBITMAP structures. I assume similar limitations for X11.
Having read a little document of QPixmapCache, I don't think it is applicable
for my case. The program I am working on is a video application. So, I am
showing images of 320x240 at about 25 fps. Using QPixmap, my program
uses quite a lot CPU cycles. But, it's kind of hard to cache images.
Hope this clarifies my situation. Looking forward to your further comment.
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