I understand Xojo now natively supports HIDPI for Mac and Windows. Years ago, I did this custom solution to have a “retina” graphics on my Mac builds by having regular resolution images and 2X resolution images that are scaled down. It worked on the Mac by determining the scale factor using this library declare I found.
With the new Xojo, I selected the HDPI setting to see what would happen and got this error message:
“The Transparent property cannot be used with Pictures with alpha channels”
…and an error on a seemingly unrelated piece of code. If I had two images, I could figure this out, but I have perhaps hundreds of images in my app. How do I got about finding which graphic among my hundreds is the culprit?
I assume with a windows machine with a normal resolution the scaled images will look OK, but on a windows machine with a higher resolution, the scaled images will look much better.I guess I am asking whether even with the HDPI setting off that the scaled images on a higher resolution screen will look better? I hope I am making sense here.
No, Im saying that there are two ways to store a picture in Xojo. A Picture which represents a single file, and an Image which is one to three files. If you want to take advantage of the automatic resolution conversion in Xojos Retina framework, youll need to combine your matching low Rez and high res Pictures into Images.