Method and system for displaying laser pointer on Windows desktop
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A laser pointer and laser point technology, applied in the computer field, can solve problems such as control fluency, delay, freeze, etc., and achieve the effect of improving drawing efficiency, improving fluency, and reducing CPU occupancy.
Inactive Publication Date: 2017-04-19
FUJIAN TIANQUAN EDUCATION TECH LTD
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However, the above scheme performs remote control operation on the PPT by sensing the movement of the mobile phone, and the sensing process usually has delays, freezes, etc., which may easily cause problems such as unsmooth control
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Embodiment 1
[0094] Please refer to figure 2 , Embodiment 1 of the present invention is:
[0095] A method for displaying a laser pointer on a Windows desktop, comprising:
[0096] Obtain and parse a plurality of operation data from the mobile phone, the operation data includes operation type, coordinates and display duration, the operation type includes display and close; the accuracy of the display duration is milliseconds;
[0097] saving the plurality of operation data to the operation queue in sequence;
[0098] Create a transparent window on the top layer of the displayed desktop; specifically, create a window on the displayed desktop; use the Windows API-UpdateLayeredWindow function to update the position, size, shape, content and translucency of a layered window, and make a laser pointer based on this The display window of the effect; use the UpdateLayeredWindow interface to take over the window WM_Paint (window drawing) message, through this API to achieve the effect of window ...
Embodiment 2
[0106] Please refer to Figure 4 , the second embodiment of the present invention is:
[0107] A system for displaying a laser pointer on a Windows desktop, comprising:
[0108] Obtaining and parsing module 1, configured to obtain and parse a plurality of operation data from the input device, the operation data includes operation type, coordinates and display duration, and the operation type includes display and close;
[0109] A saving module 8, configured to save the operation data to an operation queue;
[0110] The window creation module 2 is used to create a transparent window on the top layer of the display desktop; specifically, the window creation module is used to create a window on the display desktop; and calls the API-UpdateLayeredWindow function to set the window to be transparent, and The above window is set on the top layer of the display desktop;
[0111] A reading module 9, configured to read operation data in real time from the operation queue;
[0112] A...
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Abstract
The invention provides a method and system for displaying a laser pointer on a Windows desktop. The method includes: acquiring and analyzing operation data from an input device, wherein the operation data includes an operation type, a coordinate and the display time, and the operation type includes a display type and a closed type; establishing a transparent window on the top layer of a display desktop; determining whether the operation type is the display type or the closed type; refreshing positions where laser points existed in the transparent window are located if the operation type is the display type, and emptying all the laser points; drawing a laser point at a position corresponding to the coordinate; displaying the drawn laser point according to the display time; and hiding the transparent window if the operation type is the closed type. According to the method and device, the laser pointer can be displayed on the transparent window, and the laser pointer can be display according to the preset time; and when the laser pointer is drawn, a local refreshing manner is adopted and replaces the conventional full screen refreshing manner, the drawing efficiency is improved, and the CPU occupation is reduced.
Description
technical field [0001] The invention relates to the technical field of computers, in particular to a method and system for displaying a laser pointer on a Windows desktop. Background technique [0002] When the teacher is teaching through the electronic whiteboard, when explaining key areas or important places, he must use some operations to display the key points, such as circling key areas or bolding certain content. However, these methods are all realized by changing the actual display content of the courseware, which may affect the integrity of the courseware content and make it inconvenient for the repeated display of the courseware. Therefore, for the reuse of courseware, laser pointers are usually used to indicate prominent areas, which requires additional equipment and increases the cost. [0003] If the desktop laser pointer can be realized on the whiteboard, the teacher can quickly point to the key area by controlling the input device (such as a mobile phone). Ef...
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