I have a window with some buttons in it. When clicking one button, it will pop out a popup window. The focus will be switched to the pop out window, but we still can move the cursor outside the popup window and do other operation. So is there any method that can restrict the the mouse operation within popup window?
( means that we shall do some response work in the popup window, after the popup window disappear, then we can do other operation）
The behavior you are describing is generically called a modal window. (By generically, I mean across all GUI programming platforms, not solely Ignition.) Unfortunately, Ignition’s architecture makes this rather difficult to implement. This thread has the most comprehensive options for you:
The way that I implement this is by having a boolean client tag called something like ModalPopupShown. Then on every page, including the navigation bar, I have a rectangle with transparent grey as big as the window with a mouse clicked event set to simply 1 so that the mouse cannot click beneath it, but that does nothing itself. This should have a visible expression that uses the client tag. Then, for any popups you want modal, simply write a 1 to the client tag. Make sure to anchor the rectangle to all four window sides.