我怀疑你正在尝试创建像透明的 splashscreen ，如果是这样，你可以阅读这些伟大的文章，他们描述了一个很好的方式来使用透明png以delphi形式。

• Delphi中的Alpha混合闪屏 - 第1部分


• Alpha混合Delphi中的Splash屏幕 - 第2部分

再见。

I have a PNG image that uses transparency (it is actually a circle with gradient effect from black in the middle, to transparent on the margins). I am putting this on a form using TImage. I set TForm1.Color and the TForm1.TransparentColorValue to the same value and TForm1.TransparentColor:=true.

Now, when I run the program the gradient part of the image is displayed with the color of the form. What I am looking for is to enable the transparency of the PNG image using the transparent form effect.

What am I doing wrong? I am using Delphi 2010 Trial.

I suspect you're trying to create something like a transparent splashscreen, if that's the case, you can read these great articles, they describes a nice way to use a transparent png in a delphi form.

• Alpha Blended Splash Screen in Delphi - Part 1
• Alpha Blended Splash Screen in Delphi - Part 2

Bye.