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Informix Error -50012

Cause and resolution

Cannot specify a NULL containing window for a popup style ixWindow. Using a normalTop style ixWindow instead.

The ixWindow constructor generates this message. It indicates that the user has requested a popup ixWindow but has not indicated a containing window. Rather than guess at a containing window, VCL creates the new window as a normalTop window.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-50012 fires in the GUI builder ("Window Painter") class library -- per the official guidance: The ixWindow constructor generates this message. It indicates that the user has requested a popup ixWindow but has not indicated a containing window. Rather than guess at a containing window, VCL creates the new window as a normalTop window.

  1. Cannot specify a NULL containing window for a popup style ixWindow. Using a normalTop style ixWindow instead -- an invalid argument, state, or NULL value reaching ixWindow's constructor, per the official guidance.
Solutions / Resolution
  1. Review the application's call to ixWindow's constructor against the condition described above, and correct the argument, object state, or configuration involved, per the official guidance.
Examples
N/A

No specific triggering statement is documented beyond the GUI builder class library condition named in the official text.

Diagnostic Checks
  1. Check the application's use of ixWindow's constructor, against the specific condition the official text describes.
Related Errors / Related Topics

No closely related error codes are cross-referenced for -50012 in this set yet.

Cannot specify a NULL containing window for a popup style ixWindow. Using a normalTop style ixWindow instead.