JPH03261994A - Window display control system - Google Patents

Abstract

PURPOSE:To perform window display control over even a CRT display device which has no window display function by securing an area of size as large as lower overlapping data on a memory and saving the data of the lower overlapping part. CONSTITUTION:A view setting information control part 4 calculates the start line and end line of an overlapping part and requests a free area control part 5 to check whether or not data of the calculated size can be saved or not. The free area control part 5 compares the free size of a free area control table with the calculated size and sends a request to an image plane information retrieval part 8 when the data can be saved. The image plane information retrieval part 8 sends a request for data between a saving start line and a saving end line in the start address of the free area to a CRT display device and when the saving of image plane data is finished, the view setting informa tion control part 4 and free area control part 5 updates a view setting informa tion control table and a free area control table. Consequently, the window display control over even the CRT display device having no window display control circuit becomes possible.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for displaying data in an overlapping manner on a CRT display device, and in particular, saves the data in the lower part of the overlap in its own program and displays it as if it were a window. This relates to a window display control method that makes it appear as if the window is being displayed.

[Prior Art] Conventionally, this type of window display control method controls window display by holding multiple screen images in memory, setting and superimposing data to display on each screen. I was going.

[Problems to be Solved by the Invention] The conventional window display control method described above has multiple screen images in memory, sets data on each screen, and superimposes the data. Since it was necessary to have an area corresponding to the size of multiple sides on the memory, a large data area was required for the program. Furthermore, in the conventional technology, the window display control circuit is included in the CRT display device, and for a CRT display device without a window display control circuit, it has not been possible to realize window display control that overlaps data. . Furthermore, in order to display attribute data, simply setting screen data on a CRT display device and superimposing them is insufficient to display the attribute data correctly.

[Means for Solving the Problems J] The window display control method of the present invention includes a view setting/cancellation requesting section for requesting the range of a display area (view) for displaying data in an overlapping manner, and a set vinyl , a text data display request part that requests display information to display text data (letters, numbers), and a display part to display attribute data (rules, reverse display, color) for the set view. The attribute data display/deletion request section that requests information and the view setting information management section that receives information from the view setting/cancellation request section manage the overlapping of views and evacuate the lower part of the overlapping views. a free space management section that manages the area where the views are overlapped, a screen information search section that requests the CRT display device to import data in order to save data in the lower part where the views are overlapped to the free space, and a text data display request section. The display information management unit inspects the information from the section and attribute data display/erase request unit, the screen display unit requests the CRT display device to display text and attribute data, and the view setting information management unit references, It has a view setting information management table to be updated and a free space management table to be referenced and updated by the free space management unit.

[Example] Next, the present invention will be explained with reference to the drawings.

Referring to FIG. 1, it is a block diagram showing the configuration of a window display control system according to an embodiment of the present invention, and includes a view setting/cancellation requesting section 1, a text data display requesting section 2, and an attribute data display/erasure requesting section 3. , a view setting information management section 4, a free space management section 5, a display information management section 6, a screen display section 7, a screen information search section 8, and a view information management table and a free space management table (not shown).

Referring to FIG. 2, the view setting/cancellation request unit 1 first sets the view number, display start line/column, horizontal size, vertical size, and setting flag in order to display text data and attribute data. , and passes the request to the knee setting information management section 4.

Referring to FIG. 5, the view setting information management unit 4 calculates the start line and end line of the overlapping portion. The view setting information management section 4 requests the free space management section 5 whether data of the calculated size can be saved.

Referring to FIG. 6, the free space management section 5 compares the free space size in the free space management table shown in FIG. 11 with the calculated size, and if it can be saved, requests the screen information search section 8. .

Referring to FIG. 9, the screen information search unit 8 requests the CRT display device for data between the save start line and the save end line at the start address of the empty area.

When the screen data has been saved, the view setting information management section 4 and the free space management section 5 perform the steps shown in FIGS. 10 and 11, respectively.
Update the vinyl setting information management table and free space management table shown in the figure. When the process returns to the view setting/cancellation requesting unit 1, the knee setting/cancellation requesting unit 1 clears the text data and attribute data of the overlapping portion.

After setting the view, set the text and attribute data. Next, the process of displaying text and attribute data on the screen will be explained.

Referring to FIG. 3, the text data display request unit 2:
For the view set in the view setting/cancellation request section l,
Performs processing to display character and numeric data. first,
The text data display request unit 2 sets the view number to be displayed. Next, the text data display requesting unit 2 specifies the position to be displayed as a relative position within the view. Then, the text data display request section 2 sets the length to be displayed and the address where the display data is located, and requests the display information management section 6.

Referring to FIG. 7, the display information management unit 6 refers to the vinyl setting information management table shown in FIG. 10 and checks whether the data is correctly included in the view. If the test result is correct, the display information management section 6 requests the screen display section 7 to display it.

Referring to FIG. 8, the screen display unit 7 converts the in-view relative position to the actual screen position and sends the data to the CRT display device.

The same applies to the attribute data display/deletion request unit 3 shown in FIG. For example, data is sent to the CRT display device via the screen display section 7, and the data is displayed on the CRT display device. When deleting a view, the original screen can be restored by restoring the saved data.

[Effects of the Invention] As explained above, the present invention incorporates the concept of knee, allocates the size of only the lower part of the overlapped data in memory, and stores the data of the lower part of the overlapped part. By saving, there is an effect that window display control can be performed even on a CRT display device that does not have a window display function.

Margin below

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a window display control system according to an embodiment of the present invention, FIG. 2 is a flowchart showing the operation of the view setting/cancellation requesting section shown in FIG. 1, and FIG. FIG. 4 is a flowchart showing the operation of the text data display requesting section; FIG. 4 is a flowchart showing the operation of the attribute data display/erase requesting section shown in FIG. 1;
The figure is a flowchart showing the operation of the view setting information management section shown in FIG. 1, FIG. 6 is a flowchart showing the operation of the free space management section shown in FIG. 1, and FIG. FIG. 8 is a flowchart showing the operation of the screen display section in FIG. 1, and FIG.
A flowchart showing the operation of the screen information search unit to the figure,
FIG. 10 is a diagram showing a view setting information management table that is referenced and updated by the view setting information management section, and FIG. 11 is a diagram showing a free space management table that is referenced and updated by the free space management section. 1... View setting/cancellation request section, 2... Text data display request section, 3... Attribute data display/
Erase request section, 4... View setting information management section, 5...
Free space management section, 6... Display information management section, 7... Screen display section, 8... Screen information search section. Fig. 4 Fig. 2 Fig. 1 Vinyl setting/cancellation/request section Fig. 5 Fig. 3 Fig. 6 Fig. 5 Free space management section Fig. 8 Fig. 7 Fig. 9

Claims (1)

[Claims] 1. In a window display control method for a CRT display device that does not have a window display function, there is a display area setting/cancellation request section that requests the setting or cancellation of the display area, and a display area that requests the display of text data in the set display area. a text data display request unit that requests display or deletion of attribute data for a set display area, an attribute data display/erase request unit that requests display or deletion of attribute data for a set display area, and a display area setting information management unit that manages information on the set display area. , a free space management section that manages the area for saving the part of the display area that will be on the bottom when the display areas overlap, and a free space management section that manages the area for saving the part of the display area that will be on the bottom when the display areas overlap, and a free space management section that will take in the screen data that will be on the bottom when the display areas overlap into the free space. a screen information retrieval unit that requests the CRT display device to capture data; a display information management unit that inspects data from the text data display request unit and the attribute data display/erase request unit; A window display having a screen display section that requests display of data, a display area setting information management table that is referenced and updated by the display area setting information management section, and a free space management table that is referenced and updated by the free space management section. control method.