How to flash entire screen in C#?

Question

It takes some time for my program to finish computation, so I would like to run it, read some web pages meanwhile, and when the screen flashes (notification of finished computation), I would get back to my program.

The only missing part is -- how to flash entire screen in C#? I use WPF if this matters.

Please note -- my program is not visible, the other program (web browser for example) takes entire screen (that is the point of the problem, because otherwise, I wouldn't need any notification at all).

Flash = blink.

Answer 1

my first approach would be: on completion of the computation have your program open a new topmost window with transparent background and set it to some color (white) for some brief intervals and close the window again. mind you, while the window is on top you'll not be able to interact with underlying windows during the flashing because the window will eat those events. Alternatively, you could do what most other windows applications (like outlook or messenger) do: display a brief notification box that is clickable to get you to the associated application (your program).