Method for writing under desktop environment of operating system

Abstract

The invention discloses a method for writing under a desktop environment of an operating system. The method comprises the following steps of: creating project engineering by utilizing a QT development tool, and creating a canvas window; directly obtaining the type of the operating system by utilizing functions provided by QT, performing platform judgment, and creating a mouse business logic operating window if the operating system is an Window or Macintosh (Mac) system, wherein the window is transparent in background and can be used for receiving mouse messages; enabling the canvas window to serve as the mouse business logic operating window if the operating system is a Linux operating system; creating packaged message handling functions by utilizing the canvas window or the mouse business logic operating window, and acquiring the operating information of a mouse on the canvas window; and finally, displaying graphs on a canvas and operating drawn graphs or operating other application programs of a desktop of the operating system and by utilizing 2D (two dimension) drawing library of the QT through the canvas window by utilizing the acquired operating information of the mouse according to the mode of software by combining packaged algorithms for various graphs.

Description

【Technical field】 [0001] The invention relates to the technical field of electronic whiteboards, in particular to a method for writing in a desktop environment of an operating system. 【Background technique】 [0002] In recent years, electronic whiteboard technology has developed rapidly in teaching, making education without traditional chalk and blackboard a reality, and making the education process electronic. Regardless of the operating platform used is window, linux, or Mac, there is such a functional requirement: teachers often need to use various electronic brushes to write and mark on the desktop of the operating platform. At present, there are already some processing methods, which are to make a transparent window cover the entire desktop window, and then write on this window. Although the drawing and labeling functions are realized in this way, it cannot fully meet the needs, because the user cannot see through such operations. Window manipulates the application beh...

AI Technical Summary

Problems solved by technology

At present, there are already some processing methods, which are to make a transparent window cover the entire desktop window, and then write on this window. Although the drawing and labeling functions are realized in this way, it cannot fully meet the needs, because the user cannot see through such operations. Window manipulation of the application behind the window

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