PaperPort 3.5.2 Performance on PowerMac

PaperPort 3.5.2 Performance on PowerMac


From: Stuart Cheshire
Date: 08/18/96
Time: 03:30 pm


I've noticed a wierd behaviour with the PaperPort desktop.

If you double-click on a thumbnail to open it, it takes about 5 seconds for the window to appear. If you close the window and double-click on another thumbnail to open it, it again takes about 5 seconds for the window to appear.

Now, here's the wierd thing.

Instead of closing the window, try this: Just put the window in the background by clicking on the PaperPort desktop window to bring it to the front. Now double-click on another thumbnail to open it. The document is displayed almost instantaneously. Certainly in under one second.

What's going on? It seems that Visioneer have worked to get the image file decompression code to be *really* fast, yet the "open a window" code is *really* slow. I think there's a bug there. It shouldn't take 5 seconds to open a window. At the very least, Visioneer could change the code so that instead of opening and closing the document view window every time, they just create the window once at program startup and then use ShowWindow and HideWindow to show and hide the window. A lot of programs use this kind of technique to save creating and destroying windows all the time.

It would make the Paperport software so much faster to use.

Stuart Cheshire
* World Wide Web Page
* Stanford Operating Systems and Networking Group Research Assistant
* Stanford Residential Computing Associate
* Macintosh Programmer

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