How to share HGLOBAL with another application?

Question

I\'m trying to understand something about HGLOBALs, because I just found out that what I thought is simply wrong.

In app A I GlobalAlloc() data

Answer 1

Don't be confused with GMEM_SHARE flag. It does not work the way you possibly supposed. From MSDN:

The following values are obsolete, but are provided for compatibility with 16-bit Windows. They are ignored.

GMEM_SHARE

GMEM_SHARE flag explained by Raymond Chen:

In 16-bit Windows, the GMEM_SHARE flag controlled whether the memory should outlive the process that allocated it.

To share memory with another process/application you instead should take a look at File Mappings: Memory-mapped files and how they work.