在哪里可以找到 Delphi 的图像水印控件？

Question

Is there a good image watermark control for Delphi? It would be nice if it could receive both text and images to insert in a base photo.

I would also prefer it was free.

Answer 1

I couldn't find any pre-packaged controls. But watermarking is not very hard at all. All you simply need to do is draw an image on top of another image with the use of alpha blending. This site has a whole section on alpha blending in Delphi. They provide links to graphics libraries which have implemented it.

However if you're using Delphi.NET, and can access the relevant classes in the framework, there is an easier way using only framework methods.

Answer 2

Take a look at Graphics32 together with GraphicEX .

Or see if PascalMagick does the trick.