问题
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.
回答1:
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.
回答2:
Your settings are wrong. I am doing this (With a bitmap).
The TImage.Transparent should be false.
The Form.TransparentColourValue should be the colour of the part of The TImage that you want to be transparent.
The Form.TransparentColor should be True.
[Edit] It does not matter what colour the form is if the Image covers it completely
来源：https://stackoverflow.com/questions/1558420/how-can-i-make-a-form-transparent-according-to-a-png-image