JPH0527933A - Crt screen display system for application program - Google Patents

Abstract

PURPOSE:To lower the device dependency of an application program for executing CRT screen display, to improve transportability and to facilitate a change. CONSTITUTION:The above system is composed of an arithmetic application program 1 to prepare data to be displayed by working raw measured data, data storage file 2 to store the display data, screen attribute file 3 regulating a display attribute or a correspondent application program name, and display application program 4 to prepare a display instruction signal according to the data in the data storage file and the screen attribute file and to transmit the signal to a CRT screen display device 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of sending a display command to a CRT screen display device in an application program for displaying data on the CRT screen display device.

[0002]

2. Description of the Related Art FIG. 3 is a schematic view of a conventional CRT screen display system (a system having arithmetic programs corresponding to three kinds of jobs A, B and C). 41 is an A calculation display application program, 42 is a B calculation display application program, 43 is a C calculation display application program, 44 is a CRT screen display device, 45 is a display command by an operator, and 46 to 49 are measurement data files.

Conventionally, when displaying data such as a daily report or a monthly report on a CRT screen display device by an application program, one application program creates the data to be displayed, and the data is displayed on the CRT.
A display command is sent out by designating a position on the screen to display the result and the result by an interface signal unique to the CRT screen display device.

[0004]

Therefore, in the conventional display method, when creating a large number of display application programs, it is necessary for all of the application programs to consider the interface with the CRT screen display device. The processing tends to be particularly complicated when data is displayed on the screen. In addition, when changing the display position, display color, display rules, etc. of specific data, modify the application program itself,
Remodeling was necessary and it took time and effort.

Further, when a problem occurs in the created application program, in order to find out the cause, it is necessary to confirm the interface signal and display contents that disappear in an instant and to investigate the program in detail.

The present invention overcomes the above drawbacks and separates the screen display attributes for display data from the application program so that each calculation application program describes the display position, display color, display rule, etc. on the CRT screen. Without making it easy to change again,
It is intended to provide a CRT screen display method for application programs.

[0007]

A CRT screen display device according to the present invention relates to a calculation application program for processing various measurement data and creating data to be displayed, a data storage file for storing the display data, and a display data for the display data. Display rules (data storage file name, display position,
A display attribute program that describes the display colors and the like, and a display application program that reads out data from both files and combines the display data and the display attributes to send a display command to a CRT screen display device. To do.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A description will be given below with reference to the drawings.

FIG. 1 is a schematic diagram showing the configuration of an embodiment of the present invention. In the figure, 1 is a calculation application program, 2 is a data storage file, 3 is a screen attribute file,
Reference numeral 4 is a display application program, 5 is a CRT screen display device, 10 is a display command by an operator, and 11 to 13 are measurement data files.

Next, the operation will be described. <Operation Example 1> When the display command 10 is input to the display application program 4 by the operator when the screen is displayed, the display application program 4 reads the screen attribute file 3. Then, the operation command is sent to the operation application program 1 by the name specified in the screen attribute file 3. The calculation application program 1 calculates an answer to be output while reading necessary data from the measurement data files 11 to 13,
Write to the data storage file 2.

Next, when the writing is completed, the arithmetic application program 1 sends a signal notifying the completion to the display application program 4. Upon receiving the signal, the display application program 4 saves the data storage file 2 based on the file name, record No, data storage location, storage format, etc. of the data storage file 2 specified in the screen attribute file 3 just read. Similarly, the display signal is read by the CRT according to the screen display position, display color, display rule, etc. specified in the screen attribute file 3.
It is sent to the screen display device 5. This enables display on the CRT screen. <Operation Example 2> As a slightly more complicated example, a case where a plurality of application programs exist for a plurality of jobs will be described.

FIG. 2 shows a schematic diagram of the configuration of the embodiment.

It is assumed that there are three businesses, and their names are A, B, and C.

In the figure, 21 is an A calculation application program, 22 is a B calculation application program, 2
3 is a C calculation application program, 24 is a display application program, 25 is a CRT screen display device, 26 is a data storage file “α”, 27 is a data storage file “β”, 28 is an A screen attribute file, and 29 is a B screen attribute. File, 30 is C screen attribute file, 31
Is a display command by the operator, and 32 to 33 are measurement data files.

It is assumed that the A to C display application programs 21 to 23 and the A to C screen attribute files 28 to 30 correspond to each other on a one-to-one basis.

When displaying the screen, the operator first inputs to the display application program 24 which of the jobs A to C is to be displayed by the display command 31. In this example, it is assumed that "B" is commanded. The display application program 24 reads the B screen attribute file 29 based on it, and the B operation application program 22 (in this case, “B”) is read based on the operation application program name specified in the B screen attribute file 29. Send an operation command.

Upon receiving the command, the B calculation application program 22 reads the necessary measurement data files 32 and 33, calculates the answer to be output based on the measurement data, and writes it in the data storage file "α" 26. Next, when the writing is completed, the B calculation application program 22 sends a signal notifying the completion to the display application program 24. The display application program 24 that has received this signal displays the information stored in the B screen attribute file 29 that has just been read, that is, the file name of the data storage file “α” 26, the record No, the data storage location, the storage format, and the like. The data storage file “α” 26 is read based on the B screen attribute file 2
A display signal is sent to the CRT screen display device 25 in accordance with the screen display position, display color, display rule, etc. designated in No. 9. This enables display on the CRT screen.

In this example, the data storage file "α" 26 is shared by the A calculation application program 21 and the B calculation application program 22, but this may be secured separately. But,
In this method, the data storage file basically exists like a temporary file, and all the data to be stored and in what format is described in the screen attribute file, so a pair of calculation applications The data storage file can be shared by all programs as long as the program and the screen attribute file are matched.

[0019]

As described above, the present invention has a plurality of advantages. 1. Since a general-purpose display application program having an interface with a CRT screen display device can be shared by a plurality of arithmetic application programs, the scale of each arithmetic application program can be reduced and development can be facilitated. 2. When changing the display position, display color, display rule, etc. on the CRT screen, this can be done simply by rewriting the screen attribute file without changing the program. 3. When a failure occurs, by checking the contents of the data storage file, it is possible to determine which program, calculation or display, has a problem, and it is easy to know what kind of program it is. 4. Most of the device model and OS-dependent parts can be absorbed in the display application program.
Overall, it is possible to create an application program that is highly portable.

[Brief description of drawings]

FIG. 1 shows a schematic diagram of the configuration of an embodiment of the present invention.

FIG. 2 is a schematic diagram of the configuration of another embodiment of the present invention.

FIG. 3 shows a schematic view of a conventional display method for reference.

[Explanation of symbols]

 1 Calculation Application Program 2 Data Storage File 3 Screen Attribute File 4 Display Application Program 5 CRT Screen Display Device 10 Display Command by Operator 11-13 Measurement Data File

Claims (1)

Claim: What is claimed is: 1. An application program for displaying data on a CRT screen display device, a calculation application program for processing various measurement data and creating data to be displayed, and data storage for storing display data. A file, a screen attribute file that describes a display rule for display data, and a display application program that reads data from the both files, combines the display data and the screen attribute, and sends a display command to a CRT screen display device. A CRT screen display method characterized in that