AddGlobalKeyboardShortcut

[Sicro]

With AddGlobalKeyboardShortcut created KeyboardShortcut also work if the window is not active or hidden.
This is useful, for example, if the program is minimized in the system tray, it nevertheless should be operated via shortcuts.

[ts-soft]

And all programs should use the same global hotkeys

Bad idea!

[Vera]

Global hotkeys can be very useful and reasonable.

It can surely be a welcomed feature of an application to allow setting a global hotkey for a certain feature.

It's the user who has to carry the responsibility to prevent local conflicts.

[Sicro]

And all programs should use the same global hotkeys

All I know programs that support global keyboard shortcuts, offer to set the global keyboard shortcuts. Of course, fixed, non-changeable global shortcuts are bad.

In addition, global shortcuts can be set only once. Therefore AddGlobalKeyboardShortcut must supply a return value.

[ts-soft]

That is not a function to make native, to many limitation, to rare usage and so on.
If you really required it, so it is better to use API! Windows: RegisterHotKey