An embodiment of the present invention utilizes the abilities of an operating system to manage the window focus while debugging a graphical user interface program. In an example, a debugger program intercepts a breakpoint in the code of a graphical user interface computer program undergoing automated testing by a separate computer program. The debugger program instructs the operating system to save states of the window focus. Responsive to determining the breakpoint condition has ended, the debugger program instructs the operating system to restore saved states of the window that had focus prior to the breakpoint condition. Another embodiment of the present invention arranges similar window focus management where an operating system on its own is unable to save and restore states of the window that had focus prior to the breakpoint condition.