How do I draw an Image with a programmatically set alpha channel in .NET?

.net, alphablending, gdi+, image, winforms

Solution

This should do it:

- How to: Use a Color Matrix to Set Alpha Values in Images

:)

Problem

This is a .NET application on Windows forms using C++/CLI. I have a JPEG that I want to paint in my client area to represent an object. On some occasions -- like when the user is dragging objects around -- I'd like to draw the object with some transparency. What are the various available ways to do this?

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