@Fukiszo,
i tried your two suggestions and none works, but this can be the reason:
Zitat:
Saving the data
Normally, we could save the content of a window into a file, or copy its content into memory by using the BitBlt function. The main problem while saving the captured data by the magnification library is that we cannot
access the bitmap of the host window or the magnification window with the BitBlt function as usual. So we use a work around by using the MagSetImageScalingCallback() function, which is described as below.
This alert can be found on C++ example linked on question.
So, i think that with
BMP.Canvas.CopyRect() also not is different.