JPH0469912B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in a display control method for controlling a display screen by an application program of a processing system.

In screen control using commands set in an application program, it is desired to simplify command settings.

[Conventional technology]

In a system in which a processing device and a display device are connected, each time an application program controls a screen, it is necessary to specify a display area name and an input/output target data storage area name. An example of the coding will be explained using figures. Figure 2 shows
It is an explanatory diagram of conventional coding. When controlling the screen, the application program creator writes the display line (LINE10), name (ADISP), number of digits (ITEM20), and (LNG10) in the screen definition section GD, as shown in FIG. Next, write the buffer name (ABUF), field number (FLD1), and length (LNG10) in the field definition part FD, and then write it in the process part PD.
Write the read command (READ ADSP ABUFF).

The display screen is controlled by the processing device executing the application program created as described above.

[Problem that the invention seeks to solve]

As described above, in the conventional method, when controlling the display screen, the coding shown in FIG. 2 is not required, but the processing device executes the application program based on the coding (that is, executes the reading command). In this case, there was a problem that calculation processing of information addresses and area addresses was required.

[Means for solving problems]

The above problem occurs when a display field is identified by an identification code in a system where a display device and a processing device are connected and data retrieved from a data buffer is displayed on the screen of the display device according to a display command from a processing program. a display device having a screen configured in groups; a control table to which the identification code is attached and in which display control information regarding the display field and address information of display data is stored; and display command means for specifying the identification code. When the identification code is specified by the display command means, the processing device reads information in the control table specified by the identification code and display data extracted from the data buffer based on the address information. The problem is solved by the display control method of the present invention, which sends the received display data to the display device, and causes the display device to display the received display data in a display field corresponding to the received identification code.

[Effect]

As described above, the present invention provides a control field for each display field and stores display information related to the display field in the control field, so that it is possible to specify the identification code of the control table when displaying each field. The data can be displayed using .

〔Example〕

Hereinafter, the present invention will be explained with reference to the drawings. FIG. 1 is a block diagram illustrating one embodiment of the present invention.

Display control on the screen 2 of the display device 1 is performed by an application program 4 on the processing device 3 side. In the present invention, the screen 2 is divided into N display fields F ₁ to _{F o} , and control information related to these display fields is managed by a field control table 5.

The field control table 5 is a table provided on a continuous area of the storage unit, and contains control fields f ₁ to _{F o} corresponding to the display fields F ₁ to F o on the screen 2.
f _o are arranged in ascending order. Control field f ₁ ~
f _o occupies a region of fixed length, each leading part b ₁ ~
Identification names P, O...N are set in b _o . In addition, areas C ₁ to _{C o} contain display area information, that is, "row",
Data indicating "digit" and "attribute" is stored.
Furthermore, data lengths L ₁ -L _o are stored in areas l _{1 -lo} , and address information A _{1 -o} indicating the address of the data buffer 10 is stored in areas a ₁ -a _o .

The creator of the application program creates the above field control table 5 in advance and registers it in the system.

Therefore, when coding related to display control of screen 2, for example, data is stored in the display field _F1 .
When displaying D ₁ , the creator need only write as follows.

GET P (Note) P is the identification name of the display field F ₁ In Figure 1, the storage medium 6 on which the command is recorded
is input by the input unit 7, and the read command (GET P) is sent to the application program 4 in the main storage unit 8.
be incorporated into. When the processing unit 9 executes the application program 4 and executes the command (GET P), the processing unit 9 uses the identification name “P” of the command.
Access field f ₁ of field control table 5 and obtain information on areas a ₁ and l ₁ , that is, address information.
Data buffer 10 due to A ₁ and data length L ₁
Read display data _D1 from among. Thereafter, the processing unit 9 generates the display area information C ₁ of the area C ₁ of the control field f ₁ , that is, the information indicating “row”, “column”, and “attribute”, along with the identification name DP ₁ and the display data D _1. , and sends it to the display device 1.

The display data D ₁ received by the display control unit 11 of the display device 1 is stored in the display memory 12 . Based on the received display area information _C1 , the display control unit 11 determines the number of display "rows", the number of display "digits",
and its attributes (display color, etc.), and sends the display data _D1 in the display memory 12 to the display unit 13,
Data is entered in display field F ₁ (identification name P) on screen 2.
Display D ₁ .

As described above, the present invention makes it possible to display data for a display field set on the screen 2 simply by writing a GET command specifying the identification name of the display field.

〔Effect of the invention〕

The present invention has the effect of facilitating screen display control by application programs.

[Brief explanation of the drawing]

FIG. 1 is a block diagram explaining one embodiment of the present invention, and FIG. 2 is an explanatory diagram of a conventional example. In the figure, 1 is a display device, 2 is a screen, 3 is a processing device, 4 is an application program, and 5 is a A field control table, 6 a storage medium, 7 an input section, 8 a main storage section, 9 a processing section, 10 a data buffer, 11 a display control section, 12 a display memory,
13 indicates a display section.

Claims (1)

[Claims] 1. In a system in which a display device and a processing device are connected, and data retrieved from a data buffer is displayed on the screen of the display device according to a display command from a processing program, the system is composed of a group of display fields identified by an identification code. the display device having a screen; a control table to which the identification code is attached and in which display control information regarding the display field and address information of display data are stored; and display command means for specifying the identification code;
When the identification code is specified by the display command means, the processing device transfers information in the control table specified by the identification code and display data extracted from the data file based on the address information to the display device. A display control method characterized in that the display device displays display data in a display field corresponding to the received identification code.