JPH10143348A - Mouse event processing method, and gui part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoid to select GUI(graphical user interface) of a window with a mouse because mouse event acquisition areas are limited to be rectanglar and system resource is consumed in a large amount when GUI parts of the window are selected by using a mouse. SOLUTION: When a window 2 acquired an occurrence of an even of a mouse 1, the window examines whether a mouse point includes its coordinate in an even acquisition area of GUI parts 3 about all the GUI parts the window has and when a GUI part in which the mouse point is included exists, the window activates an even processing method that is owned by the GUI part. The window has 'list' which becomes a possession form that has an order of GUI parts and selects a GUI part with the order of the list.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mouse event processing method for inputting a command from a user in a computer by using a mouse to select a GUI component of an icon or menu item image on a screen, and a GUI component.

[0002]

2. Description of the Related Art In an application such as Microsoft Windows, which runs on an OS, an interface corresponding to a command input from a user by a mouse event for selecting a GUI component with a mouse is prepared.

At this time, the GUI parts are processed in units of windows, and the OS has standard G
UI components are implemented as a type of window.
The mouse event acquisition area is limited to a rectangle.

[0004] The position and size of the mouse event acquisition area are determined by, for example, the y coordinate of the upper side and the lower side and the x coordinate of the left side and the right side. Also, it is determined by the coordinates of one vertex (upper left corner) of the rectangle and the lengths of the sides in the x and y directions.

[0005]

The conventional GUI parts are:
Since the mouse event acquisition area is limited to a rectangle, an area having a mouse event acquisition area that does not become rectangular, such as a wiring diagram, cannot be used.

[0006] For example, as shown in FIG. 3, the bent line A or B to the respective GUI components, going to select a line A at _one point a when the mouse event acquisition region indicated by a broken line rectangle overlap each other However, the point a ₁ becomes the mouse event acquisition area of the line B, and the line B is selected.

Further, realizing all GUI parts as windows leads to large consumption of system resources.

An object of the present invention is to provide a mouse event processing method capable of appropriately selecting a mouse event acquisition area while making a GUI component a free shape.

Next, when it is desired to use a wiring diagram as a GUI component, a conventional GUI component that can only represent a rectangular position is difficult to represent each line segment, and is inconvenient. .

For example, as shown in FIG. 4A, if one line segment (solid line) is represented by a GUI component frame (broken line) limited to a rectangle, the line segment is represented by a rectangle. Further, as shown in FIG. 3B, even if it is desired to move only one end point of the line segment, it is necessary to change the size of the rectangle itself.

Another object of the present invention is to provide a GUI component which has a linear structure and facilitates operation.

[0012]

SUMMARY OF THE INVENTION The present invention relates to a method for inputting a command from a user in a computer by selecting a GUI component on a screen using a mouse. Prepare a mouse event processing class that inherits the message class related to the operation of the above, implement the event distribution mechanism to the GUI parts in the method of this class, this event distribution mechanism It is checked whether or not the mouse point is included in the event acquisition area of the GUI component for all the GUI components, and if there is a GUI component, the event processing method is started. The order in which the event acquisition areas of the parts overlap And selects the GUI parts in accordance with the door.

According to the present invention, in a GUI component for receiving a command input from a user in a computer as a mouse event, the GUI component uses a single line segment in a graphic as a characteristic line, and a starting point of the characteristic line. It is characterized in that a position is expressed by two end points of coordinates and end point coordinates, and a movement or rotation operation is performed around the characteristic line.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) As an embodiment of the present invention, Microsoft Vis with an object-oriented paradigm
The case where ua C ++ is used will be described.

As a message handled by Windows,
The message related to the operation of the window itself is CWn
Class CView, CDial derived from class d
og or the like.

In this embodiment, the class CV of the window
A mouse event processing class that inherits the view, CDialog, and the like is prepared, and in the method of this class, an event distribution mechanism to the GUI component of the window is implemented.

The GUI component has an attribute of the area. This is realized not only by the rectangle but also by the area class CRgn, for example. This area represents the event acquisition area of the GUI component, and vector graphics such as wiring diagrams are also displayed in the GUI.
It is possible to set an event acquisition area of any shape that can be handled as a part.

The event distribution mechanism performs processing as shown in FIG. When the window 2 acquires the occurrence of the event of the mouse 1 having the coordinates of the screen as a parameter, the window 2 determines whether the point of the mouse 1 includes the coordinates in the event acquisition area of the GUI part 3 by the window. Check all parts. If there is a GUI part that contains the mouse point,
Starts the event processing method of the GUI component 3.

At this time, the window 2 has a “list” in a possession form having the order of GUI parts, which corresponds to the order of overlapping of the event acquisition areas of the GUI parts. Therefore, whether or not the mouse point is included in the event acquisition area of the GUI component 3 is determined in the order of “list”.

That is, when a mouse event occurs in a portion where the event acquisition areas overlap, the event processing method of the GUI component located at the upper position of the “list” is preferentially activated.

Therefore, according to the present embodiment, it is the window that actually acquires events by encapsulation in which the event distribution mechanism is implemented in a class that inherits the window class, but it is as if by the user. G
It looks as if the UI component itself is acquiring the event, and the user can use the G
It suffices to describe the event processing of the UI component itself.

A GUI component having an event acquisition area having a free shape can be realized, and a vector graphic such as a wiring diagram can be handled as a GUI component. In addition, GU
By giving the I component as a “list” to the window class, event distribution can be realized in consideration of the overlapping of components. Further, since GUI parts are not created as windows, resource consumption is reduced.

(Second Embodiment) In this embodiment, a GUI component that represents a linear position is prepared so that the GUI component can be easily handled as a free shape not limited to a rectangle.

The position of this GUI component is represented by two end points, ie, start point coordinates and end point coordinates. FIG. 2A shows a GUI part and a characteristic line representing a linear position, and focuses on one line segment in the graphic representing the GUI part. Set to coordinates.

All operations on this GUI part are:
For example, a parallel movement, a movement of an end point, or the like is performed around the characteristic line. As shown in FIGS. 2B and 2C, the figures other than the characteristic lines move and rotate in accordance with the movement of the characteristic lines.

Therefore, in this embodiment, the GUI is set to 2
Since the position is represented by a characteristic line connecting two end points, and the operation is performed by moving or rotating around the characteristic line, an operation on a GUI component having a linear characteristic such as a line segment such as a wiring diagram can be performed more naturally.

[0027]

As described above, according to the present invention, the GUI
Provide a mouse event processing class that inherits the message class related to the operation of the component, and have an event acquisition area included in the mouse point by the event distribution mechanism to the GUI component implemented in the method of this class
Since the components are selected in accordance with the list in which the event acquisition areas overlap in order, the GUI components can be freely shaped to eliminate the large consumption of system resources, and the mouse event acquisition areas can be appropriately selected for overlap. effective. Also, by encapsulating the event distribution mechanism to the GUI components by class inheritance, the user can develop an application without being aware of this mechanism.

Further, according to the present invention, the GUI component is represented as a position by two end points of the start point coordinate and the end point coordinate of one characteristic line in the figure, and the operation of moving or rotating around the characteristic line is performed. GUs with linear characteristics such as wiring diagrams
A natural operation can be performed while expressing the I component.

[Brief description of the drawings]

FIG. 1 is a mouse event processing example showing an embodiment of the present invention.

FIG. 2 is a GUI showing a linear position representing another embodiment.
And characteristic lines and rotation examples.

FIG. 3 is an example of a polygonal line GUI component.

FIG. 4 is an example of a representation and movement of a linear GUI component.

[Explanation of symbols]

 1 mouse 2 window 3 GUI parts

Claims (2)

[Claims] When a user inputs a command in a computer by selecting a GUI component on a screen using a mouse, a computer equipped with an OS having an object-oriented paradigm is provided with a message class relating to the operation of the GUI component. Prepare the inherited mouse event processing class,
The method of this class implements an event distribution mechanism for GUI parts, and this event distribution mechanism determines whether the mouse point is included in the event acquisition area of the GUI part when the occurrence of a mouse event is acquired. When there is a GUI component, an event processing method is started.
A mouse event processing method characterized by selecting a part. 2. A GU for receiving a command input from a user in a computer as a mouse event.
In the I component, the GUI component uses one line segment in the figure as a characteristic line,
A GUI component characterized in that a position is represented by two end points of a start point coordinate and an end point coordinate of the characteristic line, and a movement or a rotation operation is performed around the characteristic line.