CN103049136A - Double-board interaction implementation method on basis of electronic white boards - Google Patents
Double-board interaction implementation method on basis of electronic white boards Download PDFInfo
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Abstract
The invention provides a double-board interaction implementation method on the basis of electronic white boards. The double-board interaction implementation method includes that an electronic white board driving unit acquires the resolution and start coordinates of a main screen and the resolution and start coordinates of an auxiliary screen, the main screen and the auxiliary screen are respectively corrected by a positioning algorithm, and then an electronic white board software unit informs the electronic white board driving unit that a current service mode is a double-board interaction mode; and the electronic white board driving unit establishes a global coordinate system, when a mouse is operated on a main window of the electronic white board software unit, an analog function MOUSEEVENT of the mouse utilizes the global coordinate system for computation via an analog formula of the mouse, so that coordinates of the mouse are obtained, and mouse operation is executed. The other screen can be used for freely displaying contents for a user, double-board interaction is implemented, the user can simultaneously operate differently on the main electronic white board and the auxiliary electronic white board, the main electronic white board and the auxiliary electronic white board cannot affect each other, double-pen writing can be implemented on the main window of electronic white board software, and window dragging between the main screen and the auxiliary screen is supported.
Description
[technical field]
The present invention relates to the electronic whiteboard field, particularly a kind of two plate interaction realizing methods based on electronic whiteboard.
[background technology]
Along with the develop rapidly of computer technology, the various multimedia coursewares that integrate sound, image, literal, video have entered the classroom.Gathered the electronic whiteboard of computer technology, display technique, network technology, photography and vedio recording technology etc., arisen at the historic moment in this digital times.Electronic whiteboard by the hardware electronic blank, be used for being connected with the hardware electronic blank and the electronic whiteboard driver element of locating, represent to user and the identification software that the electronic whiteboard software unit of user's editor is provided and forms handwriting input and form.But the application of existing electronic whiteboard technology in teaching also only is confined to veneer teaching, so that teaching interactive received very big restriction, can't satisfy teaching demand.
[summary of the invention]
The technical problem to be solved in the present invention, be to provide a kind of two plate interaction realizing methods based on electronic whiteboard, it is compared with traditional veneer teaching, make the education informations quantitative change large, and improved dirigibility, operability, teachers and students interactive of teaching, can make teacher say that demonstrating more neatly them class hour wants the thing demonstrated.
The present invention is achieved in that
Two plate interaction realizing methods based on electronic whiteboard, described pair of plate interaction realizing method is applicable to two electronic whiteboards, one computing machine and two projector, described two projector and two electronic whiteboards all connect described computing machine, main screen and secondary screen by described computing machine definition projection, described main screen drives into line operate by main screen, described secondary screen drives into line operate by the pair screen, driving the electronic whiteboard that is connected with main screen is main electronic whiteboard, driving the electronic whiteboard that is connected with the pair screen is secondary electronic whiteboard, and described pair of plate interaction realizing method comprises the steps:
Step 1, electronic whiteboard driver element are enumerated the information of computer display apparatus, obtain resolution and the origin coordinates of main screen, and the resolution of secondary screen and origin coordinates;
Step 2, electronic whiteboard driver element are proofreaied and correct respectively main screen and secondary screen by location algorithm: set up the main screen coordinate system take the main screen upper left corner as true origin, set up secondary screen coordinate system take the secondary screen upper left corner as true origin, by obtaining the coordinate of operating point on main screen on the main electronic whiteboard after the location algorithm computing, the coordinate of operating point on secondary screen on the secondary electronic whiteboard, thus realize main screen coordinate setting and secondary screen coordinate location;
Step 3, the current use pattern of electronic whiteboard software unit notice electronic whiteboard driver element are that two plates are interactive;
Step 4, electronic whiteboard driver element are set up global coordinate system: the electronic whiteboard driver element take in the main screen upper left corner as the true origin global coordinate system, described global coordinate system is benchmark with the main screen coordinate, pair is shielded the optional position that coordinate system is spliced to the main screen coordinate system, obtain the reference position of true origin under global coordinate system that secondary screen is, obtained the coordinate of point in global coordinate system under the secondary screen coordinate system;
Step 5, electronic whiteboard software unit judge that by Left, Top in TScreen class among the Delphi and the TMonitor class, Width, Height attribute the main window of electronic whiteboard software unit is to be presented on the main screen, or on secondary screen, and the status information of the screen at described main window and described main window place preserved;
If described main window is presented on the main screen, when the user operated at main electronic whiteboard, mouse simulation MOUSEEVENT function used described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action; And secondary screen is used for showing other softwares of user's operation, and described other softwares comprise word, ppt, excel, txt, html, picture, flash, audio frequency and video, realizes that two plates are interactive;
If described main window is presented on the secondary screen, when the user operated at secondary electronic whiteboard, mouse simulation MOUSEEVENT function used described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action; And main screen is used for showing described other softwares, realizes that two plates are interactive.
Further, if the coordinate of mouse under global coordinate system is (X, Y), if mouse operates at main screen, described mouse simulation formula adopts the first formula, described the first formula is: the horizontal ordinate of the wide * mouse of X=65535/ main screen resolution in the main screen coordinate system, the ordinate of the high * mouse of Y=65535/ main screen resolution in the main screen coordinate system; If mouse is done in secondary on-screen options, described mouse simulation formula adopts the second formula, described the second formula is: the wide * of X=65535/ main screen resolution (horizontal ordinate of mouse in the main screen coordinate system+horizontal ordinate of pair screen coordinate origin in described global coordinate system), the high * of Y=65535/ main screen resolution (ordinate of mouse in the main screen coordinate system+pair shielded the ordinate of coordinate origin in described global coordinate system); Thereby be implemented in the position that simulates mouse in the global coordinate system.
Further, when each subwindow that calls described main window, and in the time of described subwindow need to being shown, according to described status information, use the SetWindowPos function that this subwindow of son is presented on the screen identical with main window, even main window is positioned on the main screen, and then the subwindow of main window all is presented on the main screen, if main window is positioned on the secondary screen, then the subwindow of main window all is presented on the secondary screen.
Further, when mobile described main window, be about to main window and move to secondary screen from main screen, or secondary screen moved to main screen, by monitoring WM_MOVE message, obtain after mobile described main window be positioned at main screen or secondary screen, then the status information of the screen at described main window and described main window place is preserved, when each subwindow that calls described main window, and in the time of described subwindow need to being shown, according to described status information, use the SetWindowPos function that this subwindow of son is presented on the screen identical with current main window.
Further, when using chief editor or secondary pen when described main window operates, no matter described main window is at main screen or secondary screen, at first the electronic whiteboard software unit informs that by WINDOWS system message of PossMessage broadcasting the electronic whiteboard driver element opened two pen modes, then electronic whiteboard driver element and electronic whiteboard software unit are set up communication connection by SOCKET, the electronic whiteboard driver element is write secondary pen and is a little passed through coordinate conversion, obtain secondary pen and write the some coordinate in described global coordinate system, then send to the electronic whiteboard software unit, finish the operation of secondary pen on main screen or secondary screen; And the chief editor is mouse, and mouse simulation MOUSEEVENT function uses described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action.
Further, described electronic whiteboard drives by PID and VID differentiation main screen and drives and secondary screen driving, and main screen drives the data that receive only main electronic whiteboard, and secondary screen drives the data that receive only secondary electronics.
The present invention has following advantage:
The present invention distinguishes the main screen driving by PID and VID and secondary screen drives, and main screen drives the data that receive only main electronic whiteboard, secondary screen drives the data that receive only secondary electronic whiteboard, when mouse operates at the main window of electronic whiteboard software unit, mouse simulation MOUSEEVENT function uses described global coordinate system to calculate by mouse simulation formula, obtain mouse coordinates, carry out mouse action; The another one screen is freely demonstrated for the user, thereby (document of namely opening simultaneously two comprises word to realize the user opening simultaneously two different windows, ppt, excel, txt, html, picture, flash, depending on audio frequency and electronic whiteboard file), and tiling is presented at respectively in main screen and the secondary screen, the user can be simultaneously carries out different operations with secondary electronic whiteboard and can not influence each other at main electronic whiteboard, also can realize double-pen writing at the main window of electronic whiteboard software, support any window between main screen and secondary screen, to pull, be that the teacher is after the left field writing on the blackboard is finished, the content of writing can be shifted onto right side area shows, the teacher continues to write in the left side, so namely make things convenient for the explanation of teacher's side plate book limit, also make things convenient for the student to record the note.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the synoptic diagram of the present invention's secondary screen coordinate system true origin in global coordinate system.
[embodiment]
Two plate interaction realizing methods based on electronic whiteboard, described pair of plate interaction realizing method is applicable to two electronic whiteboards, one computing machine and two projector, described two projector and two electronic whiteboards all connect described computing machine, main screen and secondary screen by described computing machine definition projection, described main screen drives into line operate by main screen, described secondary screen drives into line operate by the pair screen, driving the electronic whiteboard that is connected with main screen is main electronic whiteboard, driving the electronic whiteboard that is connected with the pair screen is secondary electronic whiteboard, described electronic whiteboard drives by PID and VID differentiation main screen and drives and secondary screen driving, main screen drives the data that receive only main electronic whiteboard, and secondary screen drives the data that receive only secondary electronics.
Described pair of plate interaction realizing method comprises the steps:
Step 1, electronic whiteboard driver element are enumerated the information of computer display apparatus, obtain resolution and the origin coordinates of main screen, and the resolution of secondary screen and origin coordinates;
Step 2, electronic whiteboard driver element are proofreaied and correct respectively main screen and secondary screen by location algorithm: set up the main screen coordinate system take the main screen upper left corner as true origin, set up secondary screen coordinate system take the secondary screen upper left corner as true origin, by obtaining the coordinate of operating point on main screen on the main electronic whiteboard after the location algorithm computing, the coordinate of operating point on secondary screen on the secondary electronic whiteboard, thus realize main screen coordinate setting and secondary screen coordinate location; Described location algorithm is this area common technology, generally adopts free pulling method algorithm;
Step 3, the current use pattern of electronic whiteboard software unit notice electronic whiteboard driver element are that two plates are interactive;
Step 4, electronic whiteboard driver element are set up global coordinate system: the electronic whiteboard driver element take in the main screen upper left corner as the true origin global coordinate system, described global coordinate system is benchmark with the main screen coordinate, pair is shielded the optional position that coordinate system is spliced to the main screen coordinate system, obtain the reference position of true origin under global coordinate system that secondary screen is, obtained the coordinate of point in global coordinate system under the secondary screen coordinate system; See also shown in Figure 1, the true origin (0 of global coordinate system, 0) take the true origin of main screen coordinate system as benchmark, the resolution of supposing main screen is 1680x1024, the resolution of secondary screen is 1440x900, and the position of main screen and secondary screen is as shown below, and the horizontal ordinate of so secondary screen coordinate initial point in global coordinate system is-1440, ordinate then obtains according to the relative height of main screen and secondary screen is poor, is 20 such as ordinate among Fig. 1.
Step 5, electronic whiteboard software unit judge that by Left, Top in TScreen class among the Delphi and the TMonitor class, Width, Height attribute the main window of electronic whiteboard software unit is to be presented on the main screen, or on secondary screen, and the status information of the screen at described main window and described main window place preserved;
If described main window is presented on the main screen, when the user operated at main electronic whiteboard, mouse simulation MOUSEEVENT function used described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action; And secondary screen is used for showing other softwares of user's operation, and described other softwares comprise word, ppt, excel, txt, html, picture, flash, audio frequency and video;
If described main window is presented on the secondary screen, when the user operated at secondary electronic whiteboard, mouse simulation MOUSEEVENT function used described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action; And main screen is used for showing described other softwares;
Described mouse simulation formula is specially: establishing the coordinate of mouse under global coordinate system is (X, Y), if mouse operates at main screen, described mouse simulation formula adopts the first formula, described the first formula is: the horizontal ordinate of the wide * mouse of X=65535/ main screen resolution in the main screen coordinate system, the ordinate of the high * mouse of Y=65535/ main screen resolution in the main screen coordinate system; If mouse is done in secondary on-screen options, described mouse simulation formula adopts the second formula, described the second formula is: the wide * of X=65535/ main screen resolution (horizontal ordinate of mouse in the main screen coordinate system+horizontal ordinate of pair screen coordinate origin in described global coordinate system), the high * of Y=65535/ main screen resolution (ordinate of mouse in the main screen coordinate system+pair shielded the ordinate of coordinate origin in described global coordinate system); Thereby be implemented in the position that simulates mouse in the global coordinate system.
By above-mentioned steps 1 to step 5, realize that the user opens two different windows (document of namely opening simultaneously two comprises word, ppt, excel, txt, html, picture, flash, looks audio frequency and electronic whiteboard file) simultaneously, and tiling is presented at respectively in main screen and the secondary screen, and the user can be simultaneously carries out different operations with secondary electronic whiteboard and can not influence each other at main electronic whiteboard.
When each subwindow that calls described main window, and in the time of described subwindow need to being shown, according to described status information, use the SetWindowPos function that this subwindow of son is presented on the screen identical with main window, even main window is positioned on the main screen, and then the subwindow of main window all is presented on the main screen, if main window is positioned on the secondary screen, then the subwindow of main window all is presented on the secondary screen, avoids subwindow to be shown on the wrong screen.
When mobile described main window, be about to main window and move to secondary screen from main screen, or secondary screen moved to main screen, by monitoring WM_MOVE message, obtain after mobile described main window be positioned at main screen or secondary screen, then the status information of the screen at described main window and described main window place is preserved, when each subwindow that calls described main window, and in the time of described subwindow need to being shown, according to described status information, use the SetWindowPos function that this subwindow of son is presented on the screen identical with current main window, thereby realize that window pulls between main screen and secondary screen, namely the teacher is after the left field writing on the blackboard is finished, the content of writing can be shifted onto right side area shows, the teacher continues to write in the left side, so namely makes things convenient for the explanation of teacher's side plate book limit, also makes things convenient for the student to record the note.
When using chief editor or secondary pen when described main window operates, no matter described main window is at main screen or secondary screen, at first the electronic whiteboard software unit informs that by WINDOWS system message of PossMessage broadcasting the electronic whiteboard driver element opened two pen modes, then electronic whiteboard driver element and electronic whiteboard software unit are set up communication connection by SOCKET, the electronic whiteboard driver element is write secondary pen and is a little passed through coordinate conversion, obtain secondary pen and write the some coordinate in described global coordinate system, then send to the electronic whiteboard software unit, finish the operation of secondary pen on main screen or secondary screen; And the chief editor is mouse, and mouse simulation MOUSEEVENT function uses described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action.Need to prove that the chief editor clicks electronic whiteboard with secondary pen and produces different signals, the electronic whiteboard driver element is by signal identification chief editor and secondary pen.
Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in modification and the variation of the equivalence of doing according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (6)
1. based on two plate interaction realizing methods of electronic whiteboard, it is characterized in that: described pair of plate interaction realizing method is applicable to two electronic whiteboards, one computing machine and two projector, described two projector and two electronic whiteboards all connect described computing machine, main screen and secondary screen by described computing machine definition projection, described main screen drives into line operate by main screen, described secondary screen drives into line operate by the pair screen, driving the electronic whiteboard that is connected with main screen is main electronic whiteboard, driving the electronic whiteboard that is connected with the pair screen is secondary electronic whiteboard, and described pair of plate interaction realizing method comprises the steps:
Step 1, electronic whiteboard driver element are enumerated the information of computer display apparatus, obtain resolution and the origin coordinates of main screen, and the resolution of secondary screen and origin coordinates;
Step 2, electronic whiteboard driver element are proofreaied and correct respectively main screen and secondary screen by location algorithm: set up the main screen coordinate system take the main screen upper left corner as true origin, set up secondary screen coordinate system take the secondary screen upper left corner as true origin, by obtaining the coordinate of operating point on main screen on the main electronic whiteboard after the location algorithm computing, the coordinate of operating point on secondary screen on the secondary electronic whiteboard, thus realize main screen coordinate setting and secondary screen coordinate location;
Step 3, the current use pattern of electronic whiteboard software unit notice electronic whiteboard driver element are that two plates are interactive;
Step 4, electronic whiteboard driver element are set up global coordinate system: the electronic whiteboard driver element take in the main screen upper left corner as the true origin global coordinate system, described global coordinate system is benchmark with the main screen coordinate, pair is shielded the optional position that coordinate system is spliced to the main screen coordinate system, obtain the reference position of true origin under global coordinate system that secondary screen is, obtained the coordinate of point in global coordinate system under the secondary screen coordinate system;
Step 5, electronic whiteboard software unit judge that by Left, Top in TScreen class among the Delphi and the TMonitor class, Width, Height attribute the main window of electronic whiteboard software unit is to be presented on the main screen, or on secondary screen, and the status information of the screen at described main window and described main window place preserved;
If described main window is presented on the main screen, when the user operated at main electronic whiteboard, mouse simulation MOUSEEVENT function used described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action; And secondary screen is used for showing other softwares of user's operation, and described other softwares comprise word, ppt, excel, txt, html, picture, flash, audio frequency and video, realizes that two plates are interactive;
If described main window is presented on the secondary screen, when the user operated at secondary electronic whiteboard, mouse simulation MOUSEEVENT function used described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action; And main screen is used for showing described other softwares, realizes that two plates are interactive.
2. two plate interaction realizing methods based on electronic whiteboard according to claim 1, it is characterized in that: establishing the coordinate of mouse under global coordinate system is (X, Y), if mouse operates at main screen, described mouse simulation formula adopts the first formula, described the first formula is: the horizontal ordinate of the wide * mouse of X=65535/ main screen resolution in the main screen coordinate system, the ordinate of the high * mouse of Y=65535/ main screen resolution in the main screen coordinate system; If mouse is done in secondary on-screen options, described mouse simulation formula adopts the second formula, described the second formula is: the wide * of X=65535/ main screen resolution (horizontal ordinate of mouse in the main screen coordinate system+horizontal ordinate of pair screen coordinate origin in described global coordinate system), the high * of Y=65535/ main screen resolution (ordinate of mouse in the main screen coordinate system+pair shielded the ordinate of coordinate origin in described global coordinate system); Thereby be implemented in the position that simulates mouse in the global coordinate system.
3. two plate interaction realizing methods based on electronic whiteboard according to claim 1, it is characterized in that: when each subwindow that calls described main window, and in the time of described subwindow need to being shown, according to described status information, use the SetWindowPos function that this subwindow of son is presented on the screen identical with main window, even main window is positioned on the main screen, then the subwindow of main window all is presented on the main screen, if main window is positioned on the secondary screen, then the subwindow of main window all is presented on the secondary screen.
4. two plate interaction realizing methods based on electronic whiteboard according to claim 1, it is characterized in that: when mobile described main window, be about to main window and move to secondary screen from main screen, or secondary screen moved to main screen, by monitoring WM_MOVE message, obtain after mobile described main window be positioned at main screen or secondary screen, then the status information of the screen at described main window and described main window place is preserved, when each subwindow that calls described main window, and in the time of described subwindow need to being shown, according to described status information, use the SetWindowPos function that this subwindow of son is presented on the screen identical with current main window.
5. two plate interaction realizing methods based on electronic whiteboard according to claim 1, it is characterized in that: when using chief editor or secondary pen when described main window operates, no matter described main window is at main screen or secondary screen, at first the electronic whiteboard software unit informs that by WINDOWS system message of PossMessage broadcasting the electronic whiteboard driver element opened two pen modes, then electronic whiteboard driver element and electronic whiteboard software unit are set up communication connection by SOCKET, the electronic whiteboard driver element is write secondary pen and is a little passed through coordinate conversion, obtain secondary pen and write the some coordinate in described global coordinate system, then send to the electronic whiteboard software unit, finish the operation of secondary pen on main screen or secondary screen; And the chief editor is mouse, and mouse simulation MOUSEEVENT function uses described global coordinate system to calculate by mouse simulation formula, obtains mouse coordinates, carries out mouse action.
6. two plate interaction realizing methods based on electronic whiteboard according to claim 1, it is characterized in that: described electronic whiteboard drives by PID and VID differentiation main screen and drives and secondary screen driving, main screen drives the data that receive only main electronic whiteboard, and secondary screen drives the data that receive only secondary electronics.
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| CN111966313B (en) * | 2020-07-28 | 2022-06-17 | 锐达互动科技股份有限公司 | Method, device, equipment and medium for realizing fusion of white boards |
| CN118092750A (en) * | 2024-04-29 | 2024-05-28 | 杭州度康科技有限公司 | Double-screen vision-aiding display method, device and equipment suitable for low-vision crowd |
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