What is the function of SetForegroundWindow in C++?

The SetForegroundWindow function in C++ is used to set a specified window as the foreground window and activate it. The foreground window is the window that the user is currently interacting with, meaning it has focus and is receiving user input.

When SetForegroundWindow is called, it can bring the specified window to the front of the Z-order and activate it, allowing the user to interact with it immediately. This is especially useful for applications that need to respond promptly to user actions, such as window switching, window focus switching, and simulating user interactions.

It’s important to note that SetForegroundWindow can only set the window of the current process as the foreground window, not the windows of other processes. Additionally, in order to prevent misuse, the Windows operating system restricts the use of SetForegroundWindow, requiring the process calling it to be the current foreground process or one created by the current foreground process.