Display apparatus and method for controlling screen projections from multiple devices to same screen

A display apparatus, comprising:

• at least one processor, connected with the display, and configured to execute instructions to cause the display apparatus to:
• a display, configured to display images and/or a user interface, wherein the user interface comprises one or more windows;
• establish a connection with a first projection device in response to a first projection request from the first projection device;
• receive projection content from the first projection device;
• based on determining projection content from the first projection device is vertical media resource, control the display to show a top-level application of a user interface displayed when the first projection request is received and the projection contents from the first projection device;
• based on determining the top-level application supports split screen display, display two windows on the display, wherein the top-level application is displayed in a first window of the two windows, and the projection content from the first projection device is displayed in a second window of the two windows;
• and
• based on determining the top-level application does not support split screen display, display two windows on the display, wherein the top level application after scaling is displayed in either window of the two windows, and the projection content from the first projection device is displayed in the other window of the two windows;
• establish connections with multiple projection devices in response to multiple projection requests from the multiple projection devices, wherein the multiple projection devices support a same projection protocol, and the multiple projection devices are connected with the display apparatus at different time points;
• receive projection contents sent from the multiple projection devices;
• based on determining the projection contents from a second projection device is vertical media resource, control multiple windows to display the projection contents sent from the multiple projection devices respectively, wherein the second projection device is connected with the display apparatus later than one or more other projection devices among the multiple projection devices;
• and
• based on determining the projection content sent from the second projection device is a horizontal media resource, control the display to display the projection contents sent from the second projection device in full screen.