Opacity of Control

[Malfunction]

Hi,

 

I need to cover a part of my form with a transparent layer. It should not be fully transparent though.

If I could just use a Panel and set it's opacity using a trackbar it'll be fine. But the panel doesn't have an opacity property. :(

[Malfunction]

So it seems to be impossible to change opacity of a panel.

Now I'm trying to draw some layer manually using the setPixel routine. How can I draw pixels with transparency?

[divil]

You can only do this if you're responsible for drawing everything under neath the "panel" yourself. Then you can just create a brush with a semi-transparent color and draw a rectangle, simple as that. But if you're trying to draw over windows control I'm afraid you're pretty much out of luck.

 

Maybe you could fake it by using a form without a titlebar and showing that over the top.

[Malfunction]

I was just trying to put a semi-transparent layer over an image...

.Net is not flash but did I really ask for too much? ;)

[Hamburger1984]

see attachment... should answer your question... but keep in mind that this won't work with all controls...

 

Andreas

transparentcontrols.zip

[garethowenldn]

see attachment... should answer your question... but keep in mind that this won't work with all controls...

 

Andreas

 

This is Genius!

[Cags]

This is Genius!

I wouldn't say that, whilst it does fake a semi-transparent appearance, it only does so over its container. If you add say a checkbox to the form and position it behind the panel its not there. Refer to what divil said.