LockSetForegroundWindow function (winuser.h)

The foreground process can call the LockSetForegroundWindow function to disable calls to the SetForegroundWindow function.

BOOL LockSetForegroundWindow(
  [in] UINT uLockCode
);

[in] uLockCode

Type: UINT

Specifies whether to enable or disable calls to SetForegroundWindow. This parameter can be one of the following values.

Type: BOOL

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

The system automatically enables calls to SetForegroundWindow if the user presses the ALT key or takes some action that causes the system itself to change the foreground window (for example, clicking a background window).

This function is provided so applications can prevent other applications from making a foreground change that can interrupt its interaction with the user.

AllowSetForegroundWindow

Conceptual

Reference

SetForegroundWindow

Windows