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How to use 32-bit color bitmap images as custom symbol in MapInfo Pro

Products affected: MapInfo Pro™
MapInfo Pro supports up to 24-bit color bitmaps as of now.
If the custom symbol image is 32-bit color bitmaps, MapInfo Pro will be converting it to 24-bit color bitmaps. 
Due to this, the users might observe some display issues.

32-bit color bitmaps will be officially supported from MapInfo Pro v17.0 release onwards.

To use the 32-bit color bitmap images as custom symbol in MapInfo Pro v16 and earlier, use an utility (such as IrfanView) to convert the image to 24-bit color bitmap image and if necessary, modify the background color so it is not white (or any other color in the image desired to be displayed).
UPDATED:  October 26, 2017