Re: [platform-swt-dev] SWT getImageData().type always -1

[Carolyn MacLeod <Carolyn_MacLeod@xxxxxxxxxx>]

If you care about the type of file an
Image was read from, you need to read it into an ImageData first, and then
create your Image from that.
(as opposed to reading directly from
file into an Image). Image class does not retain information about where
the Image originally came from. Only ImageData class does that.

        ImageData
data = "" ImageData("C:\\graphic.bmp"); 
        Image
image = new Image(device, data);
        //
At this point, data.type will be SWT.IMAGE_BMP
        //
and image.getImageData().type will be -1 (SWT.IMAGE_UNDEFINED)

See org.eclipse.swt.examples.imageanalyzer.ImageAnalyzer
(available in the eclipse examples zip on the eclipse download page) for
an example that reads from file into an ImageData and then gets the Image
from the ImageData.

Carolyn

Philipp Schneider <eclipse-swt-dev@xxxxxxxxxxxxxxxxxxxxxxxxxx>
Sent by: platform-swt-dev-admin@xxxxxxxxxxx

11/23/2004 06:50 PM

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Subject	[platform-swt-dev] SWT getImageData().type always -1

Hello.

I am using SWT to do a project for college.
The method getImageData().type from Image Object will ALWAYS return -1.
If I load a Image Object from a byte[] or from a File it is always -1.
I 
can see jpeg and gif, but type is always -1.
Is that a bug, or am I stupid ? :-)
Is there another way to find out what type a image it is?

thanks
Phil

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