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Intel corner
File formats
What REALbasic applications can read
Issue: 4.3 (January/February 2006)
Author: Christian Schmitz
Article Description: No description available.
Article Length (in bytes): 4,359
Starting Page Number: 36
RBD Number: 4317
Resource File(s):
4317.sit Updated: Monday, January 16, 2006 at 12:54 PM
Related Web Link(s):
http://www.apple.com/quicktime/pro/specs.html
http://support.microsoft.com/?scid=kb;en-us;q316992
Known Limitations: None
Excerpt of article text...
Often REALbasic developers ask what file formats their applications can read without using a plugin.
Bitmap Picture files
Bitmap image files are those files which contain the data for each pixel. Vector image files contain a list of drawing commands which can be used to create a bitmap image for display. Vector images are scale better and use less disc space, but need time to render.
Mac OS
On Mac OS without QuickTime installed you can only read uncompressed PICT images, or those with RLE compression. So if you need to support good old System 7.x or Mac OS 8/9 you must think about users who do not have QuickTime installed. On Mac OS X QuickTime is always installed.
PICT files with standard RLE compression load fine on all Mac OS versions, but there are special PICT files which use a QuickTime image compression codec (like JPEG). Those PICT files can be drawn without QuickTime, but the user will only see a white rectangle. All non PICT image files inside your project are converted to this special PICT format on compilation.
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Article copyrighted by REALbasic Developer magazine. All rights reserved.
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