Informix Error -4158: IBM Informix FORM and WINDOW statements are not supported in this product. Use the Visual Class Library for screen interaction.

Cause and resolution

IBM Informix FORM and WINDOW statements are not supported in this product. Use the Visual Class Library for screen interaction.

The compiler encountered an OPEN FORM or OPEN WINDOW statement. In NewEra, these functionalities are handled through Visual Class Library objects. Consult the Graphical and Connectivity Reference Manual. Other grammatical errors might be generated in addition to this one. Replacing the offending statements with VCL calls and recompiling should eliminate the additional messages.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-4158 fires when the compiler encounters an OPEN FORM or OPEN WINDOW statement — per the official guidance, NewEra handles screen interaction through Visual Class Library (VCL) objects instead; additional grammatical errors may follow from the same statement.

An OPEN FORM or OPEN WINDOW statement in NewEra source, per the official guidance — the direct, only cause.

Solutions / Resolution

Consult the Graphical and Connectivity Reference Manual, per the official guidance.
Replace the offending statements with Visual Class Library calls, per the official guidance — this should also eliminate any additional cascading error messages.

Examples

A classic 4GL FORM statement in NewEra source

OPEN FORM myform FROM "myform"
DISPLAY FORM myform
-- -4158: NewEra uses VCL, not OPEN FORM/OPEN WINDOW

Corrected

Replace the form-based interaction with the appropriate Visual Class Library object calls per the Graphical and Connectivity Reference Manual.

Diagnostic Checks

Check the source for any OPEN FORM/OPEN WINDOW statement, and replace it with VCL calls.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -4158 in this set yet.

OPEN FORM/OPEN WINDOW isn't supported in NewEra — use Visual Class Library objects instead.