Informix Error -50203: A DDEML function was called without first calling the DdeInitialize() function, or an invalid instance identifier was passed to DDEML.

Reasons / Common Causes

-50203 is raised by the Window Painter GUI builder library in the Window Painter GUI builder library — per the official guidance:

A Dynamic Data Exchange Management Library (DDEML) function has returned a value of DMLERR_DML_NOT_INITIALIZED (0x4003). Before calling any other DDEML function, an application must call the DdeInitialize() function. This function obtains an instance identifier for the application, registers the application's DDE callback function with the DDML, and specifies the transaction filter flags for the callback function.

1. A DDEML function was called without first calling the DdeInitialize() function, or an invalid instance identifier was passed to DDEML, per the official guidance — the direct, documented condition.

Solutions / Resolution

1. Adjust the calling code to respect the constraint named in the message, per the official guidance — no other resolution is documented.

Examples

N/A

No specific triggering statement is documented beyond the class-library condition described above.

Diagnostic Checks

1. Check the specific value, object state, or call sequence that this condition flags here, against the constraint the official guidance describes.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -50203 in this set yet.

A DDEML function was called without first calling the DdeInitialize() function, or an invalid instance identifier was passed to DDEML.