You can confine the cursor to a rectangular area on the screen by using the ClipCursor function. This is useful for when the user must respond to a certain event within the confined area of the rectangle. For example, you might use ClipCursor to confine the cursor to a modal dialog box, preventing the user from interacting with other windows until the dialog box is closed.
The GetClipCursor function retrieves the screen coordinates of the rectangular area to which the cursor is temporarily confined. When it is necessary to confine the cursor, you can also use this function to save the coordinates of the original area in which the cursor can move. Then, you can restore the cursor to the original area when the new confinement is no longer necessary.