Strange Bitmap Problem (OpenInsight Specific)
At 26 DEC 1998 12:23:37PM Greg James wrote:
I'm in the middle of a strange bitmap problem that I could use some help with.
I placed a .bmp image on a form using the OI form designer. While viewing the form in design mode, the image looks exactly as it should.
When in 'test run' mode, the bitmap image appears 'grainy'. The results are the same, regardless of whether or not the image is 'clipped' or 'resized'.
Why would the image display correctly during form design mode, and grainy or degraded during a test run? I have experienced the same problem on a separate computer.
Any advice would be appreciated.
Greg James
At 04 JAN 1999 07:09AM Oystein Reigem wrote:
Greg,
You wrote 26 Dec you had problems with BMPs in test run. I think there has always been a problem with BMPs in OI when Windows is set up with 256 colours. With a 256 colour display setting BMPs in OI seem to show with only the old 16 Windows colours. The BMP colours snap to the nearest colour of the 16, with no dithering. I noticed this in OI 2.x and checking now with 3.61 I see it's still the same.
But I cannot remember ever having seen a difference between test run and normal run!
- What are your Windows display colour settings?
- How many colours is your BMP? 24-bit? 256 colours? If 256 - which palette? Mail me the file if you want me to look at it.
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RevSoft,
(1) Any reason for the above never been corrected?
(2) Why cannot OI display 24-bit images in full colours? They show dithered in 256 colours. I've tried both BMPs and JPEGs, in OI 3.61. I use bitmap controls to show thumbnails, so I need all the quality I can get!
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- Oystein -
Øystein Reigem, Humanities Information Technologies, Allégt 27, N-5007 Bergen, Norway. Tel: +47 55 58 32 42. Fax: +47 55 58 94 70. E-mail: oystein.reigem@hit.uib.no. Home tel/fax: +47 56 14 06 11.