Programmer's Reference


Sample callback for OS/2 and Microsoft Windows

The following example is the C code for the IBM Smalltalk window procedure for OS/2 and Microsoft Windows. This example demonstrates how to call back into Smalltalk. Similar code will also work under UNIX platforms.

Note:IBM Smalltalk supports external language entry points that can be used instead of hand-written code. See Entry points.

Important points about the C code are:


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