How to put two control in the same location? C#

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There is a method to put two control in the same location and opacity the control on the front.?

ex:-
Control A (in the back): Button , opacity 100%, location 300;240
Control B (in the Front): Panel or any other, opacity 60%, location 300;240

What I have tried:

i tried to this:

Color.FromArgb(120, Color.Black);

but it works only if there are no controls in the back.

Posted 23-Dec-22 6:49am

Golden Basim

Updated 24-Dec-22 3:01am

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Solution 2

To get the kind of transparency you want in Win Forms, use separate Forms, each of which can have its opacity set separately. Set the forms' DoubleBuffer Property to 'true. Using Forms you get run-time movability "free" depending on FormBorderStyle, and other settings.

The hacks that can be used to simulate a kind-of transparent panel are, imho, not that useful, and may have weird refresh behavior when their host Forms are moved or resized.

You'll have to manage the forms' position and z-order, and, as Dave points out, opacity setting does not let a mouse-click "pass through."

Posted 24-Dec-22 3:01am

BillWoodruff

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Dave Kreskowiak · Accepted Answer · 2022-12-23T07:46:00

That's because, in Windows Forms, Transparent isn't. When you set the backcolor of a control to Transparent, what you are really doing is telling the control to take on the background properties of its container, likely your Form. You cannot see the Button control behind the Panel.

Opacity does NOT make a control transparent. It makes what you are drawing partially transparent, but it does not make the drawing surface of the control transparent. To get around this, you would have to make your own version of the Panel control so you get complete control over how the Panel is painted.

For an example, see Creating a .NET Transparent Panel | CodeGuru[^]

You have another problem. The Panel control you're going to create will cover the Button so any mouse clicks will go to the panel, not the button! The Panel is visually transparent to you, not the mouse.