Question

How can I resize my application’s window when the taskbar’s size has changed?

For example, when the taskbar has been reduced in size my window should increase in size to fill up the hole that was created. My window should never overlap the taskbar.

I was able to create the window in the correct place by calling CreateWindowEx with a position derived from calling SystemParametersInfo(SPI_GETWORKAREA, 0, &rectWorkArea, 0);

Now, when I increase the taskbar’s size my window’s size decreases automatically
without any code. But when I “go back”, my window remains in its current position. How can I fix this?

Answer 1

Not judging if it is good or wrong idea (as standard applications just don’t do it), I think it can be tracked by handling WM_SETTINGCHANGE in any top-level window.