Abstract: This application provides a window display method, a window switching method, an electronic device, and a system. The method is applied to multi-screen collaboration between a mobile phone and a PC, and a plurality of application interfaces of the mobile phone are displayed in a form of tabs in a multi-screen collaboration window. In the multi-screen collaboration process, a background of the mobile phone may obtain user operations, distinguish between operation objects according to the user operations, and then determine a running status of an application and a window display status, so as to obtain an operation result that better meets user's expectation. The method may further implement file sharing between the mobile phone and the PC and between different applications of the mobile phone.

Abstract: A data transmission method is implemented by a first electronic deviceand includes displaying a first window and a second window, where the first window displays a projected interface of a second electronic device, and the second window displays a projected interface of a third electronic device; detecting a first input instruction that acts on first information in the first window; sending a second input instruction to the second electronic device based on the first input instruction, where the second input instruction instructs the second electronic device to determine the first information; receiving, from the second electronic device,first transmission information about the first information; detecting a third input instruction acting on the second window; and sending, to the third electronic device based on the third input instruction, second transmission information generated based on the first transmission information.

Abstract: This application provides a window display method, a window switching method, an electronic device, and a system. The method is applied to multi-screen collaboration between a mobile phone and a PC, and a plurality of application interfaces of the mobile phone are displayed in a form of tabs in a multi-screen collaboration window. In the multi-screen collaboration process, a background of the mobile phone may obtain user operations, distinguish between operation objects according to the user operations, and then determine a running status of an application and a window display status, so as to obtain an operation result that better meets user’s expectation. The method may further implement file sharing between the mobile phone and the PC and between different applications of the mobile phone.

Abstract: A content projection method and device related to the field of screen projection technologies are provided. The method includes: The third electronic device plays second content; an NFC chip of the third electronic device touches or approaches an NFC chip of the first electronic device; the third electronic device receives connection status information sent by the first electronic device; and the third electronic device projects the second content to the second electronic device based on the connection status information.

Abstract: Provided are an anti-CLDN18.2 antibody or an antigen-binding fragment thereof, a derivative comprising said antibody or antigen-binding fragment thereof, a pharmaceutical composition, and related use of said antibody or antigen-binding fragment thereof for treating, diagnosing and detecting cancers.