cxImageList - Loading image into a Glyph property using the GetBitmap method gives a low-quality image

Hi Mark,
Basically, it's necessary to use the TcxImageList.GetImage method … as suggested in the following reports:
 - B18929 ("TcxButton - Glyph loaded from an ImageList looks corrupted")
 - B20170 ("Button glyphs are painted incorrectly")
 - Q106588 ("How to properly change the ribbons application button glyph image at runtime?")
If you need to use the GetBitmap method, please apply the code modification, suggested in report B18452 ("Loading a glyph from an ImageList, image isn't displayed in dxBarButton").
In any case, I see that the GetBitmap method returns a low-quality image. Our developers will research the problem. Thanks for your patience.
Regards,
Serge

Dear Mark,
We apologize for the late response. It took us significant time to research the situation. Here are the results of our investigation:
The main difference between the GetBitmap and GetImage methods is:
 - TImageList.GetBitmap paints an image on the destination bitmap;
 - TcxImageList.GetImage copies an image to the destination bitmap, WITHOUT its mask and WITHOUT the TransparentColor.
Both methods adjust the size of the resulting bitmap, but do NOT adjust its PixelFormat.
You must take these peculiarities into account to avoid problems like this. In particular:
 1) the cxButton.Glyph.PixelFormat value may be "wrong" - ideally, it should match the original color depth of the image loaded from the cxImageList;
 2) when the GetBitmap method is used, you should prepare the background of the cxButton.Glyph, because the cxImageList will paint on this background. This is important especially for 32bit images. This is why it's better to use the GetImage method for these images.
 3) when the GetImage method is used, you should take the settings of the image, stored in the cxImageList, into account. In particular, whether it was saved with or without mask and/or TransparentColor. A mask is added if an image was imported from an ImageList, or if it was added to an old-format cxImageList (version < 1). If an image has a mask or TransparentColor, it's better to use the GetBitmap method.
Once you've read this, you may treat using of the TcxImageList very complex, and even unacceptable. However, this is only the first impression:
 1) In fact, the TcxImageList is mostly intended to work with 32bit images. We've specially designed this components to serve user requests for the alpha-blending support best.
 2) If you add similar images (with the same color depth) to your cxImageList, you won't encounter such problems when retrieving them.
Thanks,
Serge