Screen controlling method and device

A method of operating an application performed by a processor of an electronic device, comprising:

• determining a layout for displaying one or more execution windows corresponding to the application based at least in part on a structure of a display exposed according to a form factor of the electronic device, wherein the form factor of the electronic device is adjustable by a user;
• based at least in part on the determined layout, determining a first region on which a host window among the execution windows is to be arranged and a second region on which one or more dependent windows dependent on the host window are to be arranged;
• based at least in part on receiving a request for execution of the application, controlling the display such that the host window is displayed on the first region;
• based at least in part on receiving an input calling a first dependent window among the dependent windows from the host window, controlling the display such that the first dependent window is displayed on the second region;
• and
• based at least in part on receiving an input calling a second dependent window from the first dependent window, controlling the display such that the second dependent window is stacked on the second region,
• wherein information associated with the first region and information associated with second region are determined based on at least one of a size or a structure of the display exposed, which is determined based on a form factor structure of the electronic device,
• wherein the information associated with the first region comprises at least one of position information or size information of the first region in the display,
• wherein the information associated with the second region comprises at least one of position information or size information of the second region in the display.

An electronic device comprising:

• a display configured to output a screen;
• a memory storing therein at least one application;
• and
• a processor operatively connected to the display and the memory and configured to execute the application and control the screen displayed on the display,
• wherein the processor is configured to:
• display a host window corresponding to the application on a first region of the display;
• based at least in part on a call of a first dependent window among dependent windows that are dependent on the host window, display the first dependent window on a second region of the display;
• based at least in part on an event occurring in the first dependent window, stack and display a second dependent window among the dependent windows on the second region;
• and
• based at least in part on an event occurring in the host window, initialize window display on the second region,
• wherein information associated with the first region and information associated with second region are determined based on at least one of a size or a structure of the display exposed, which is determined based on a form factor structure of the electronic device,
• wherein the information associated with the first region comprises at least one of position information or size information of the first region in the display,
• wherein the information associated with the second region comprises at least one of position information or size information of the second region in the display.