http://www.aha-soft.com/faq/delphi-imagelist-png.htm
Query:
"Embarcadero Delphi ImageList does not show transparent PNG icons correctly. How to fix it?".Solution:
If you want to use 32-bit (24-bit + alpha channel) PNG icons within Delphi TImageList,
you need to set the following property values for TImageList.
DrawingStyle: dsTransparentColorDepth: cd32Bit
Note: Images must be transparent already.
转载于:https://www.cnblogs.com/shangdawei/p/4042404.html
