HPlogo HP Data Entry and Forms Management System (VPLUS) Reference Manual: HP 3000 MPE/iX Computer Systems > Appendix K SNA DHCF with VPLUS Applications

Using FORMSPEC With DHCF
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You can compile a forms file for an IBM 3270 and any HP terminal that supports VPLUS on MPE/V or MPE/XL by selecting the desired terminals from the Terminal/Language Selection Menu and ensuring that the forms file adheres to IBM 3270 requirements. You must compile a forms file for at least one HP terminal as well as an IBM 3270.

Certain FORMSPEC block-mode components prohibit you from running FORMSPEC interactively on an IBM 3270 display station while using SNA DHCF. However, you can use FORMSPEC in batch mode on an IBM 3270.

The following procedure provides a hypothetical example that uses FORMSPEC to modify a VPLUS form application for an SNA DHCF session.

  1. Type the following command at the MPE prompt:

    RUN FORMSPEC.PUB.SYS

    FORMSPEC responds by displaying the Forms File menu.

  2. Type the desired forms file name and press Enter. FORMSPEC responds by displaying the Main menu.

  3. Type T at the Enter Selection field where the cursor is currently positioned. FORMSPEC responds by displaying the Terminal/Language Selection menu.

  4. Type X beside the IBM 3270 field and at least one HP field as shown below. Even if your application is strictly for the IBM 3270, you must also select an HP terminal on this menu for diagnostic purposes. This enables you to display a form on an HP terminal if you are unable to display the form on an IBM 3270.

  5. Press Enter after you have selected the desired terminals. If SNA DHCF is not installed on your system, FORMSPEC responds by displaying the message, SNA DHCF not installed; necessary to compile for IBM 3270. You must then either remove the IBM 3270 selection or make sure that SNA DHCF is installed on your system.

    If SNA DHCF is installed, FORMSPEC responds by displaying the Globals menu as shown below. Note that the Window Display Line shows the default of 24 lines.

  6. Change the number of the Window Display Line field to either 0 (no window line), 1 (window line at top line of screen), or 22 (window line at line 22 above labels). If you inadvertently press Enter without changing this field, FORMPSEC responds by displaying the error message shown below.

    If this message appears, correct the error by specifying 0, 1, or 22 for the Window Display Line field and press Enter. FORMSPEC responds by displaying the Save Field menu.

  7. Create or modify one or more forms. When you compile the form(s), you may encounter an error message. The following example shows one of the possible error messages for form "XYZ", which involves the attribute byte explained earlier in this appendix. (Refer to appendix B for a list of SNA DHCF-specific error messages.)

  8. Go to form "XYZ" and press Enter to determine the nature of the error. FORMSPEC responds by displaying an explanatory message about the error and positions the cursor at the error location as shown below.

    In this example, the error is obvious. The field tag D must be moved one column to the right to line up with the other characters. Moving this field allows space for the attribute byte between the colon and the beginning of the field.



IBM 3270 Differences and Limitations
  		 


Using VPLUS Intrinsics With DHCF  
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