Windows 10 to close the UWP, Win32 divide with new APIs

Windows 10 apps window

Windows 8 was released with the promise that it would bridge
the two worlds — modern and legacy/traditional computing. In
addition to your existing Win32 apps, Windows 8 also shipped
with the ability to run the modern apps that would offer better
multitasking experience on touch hardware.

Many pundits and experts have wondered whether Microsoft’s UWP
(modern apps) still have a future on Windows 10.

While UWP is alive and not going anywhere, most customers have
formed the general perception that the Win32 ‘desktop’ apps are
for advance or real work that they expect from Windows.

Nearly nine years later,
Microsoft is again trying to close the UWP, Win32 divide on
Windows 10 with Project Reunion.

Apparently, unifying the mobile-desktop experience is much
harder than it looks and Microsoft went off the track.

Windows 10’s modern apps have been in a constant state of
“catching up” and the general perception is that these modern
apps are “dumbed down” for a shiny appearance.

Microsoft has also focused on bringing new features only to
UWP, and the Win32 apps have been in a state of
“non-innovation” and developers are left behind with access to
the legacy APIs only.

Over the past few months, Microsoft has been trying to clean up
the mess by unifying the APIs across the two app models. In
fact, Microsoft is also trying to add modern elements to Win32
apps to close the massive divide between Win32 and UWP
applications.

Windows 10 share dialog

With Project Reunion, Microsoft says it will unify access to
existing Win32 and UWP APIs, and decouple them from the
operating system. As a result, you can finally expect the
“modern features” in traditional desktop apps, including access
to Windows 10’s built-in share panel.

Microsoft has now confirmed that it will introduce a “unified
windowing space” for UWP and Win32 apps. This will allow
developers to adopt APIs that can provide consistent windowing
experiences across UWP or Win32 apps.

“We also want the windowing model to be fundamentally the same
so that we create a familiar way of working for developers
regardless if you chose UWP or Win32 as your application
model,” Microsoft said.

As part of the Project Reunion, Microsoft says Windows 10’s
windowing APIs will be accessible to developers regardless of
the process model (UWP or Win32). This move will allow
Microsoft and developers to create apps (UWP or Win32) with the
same set of features and APIs.

Calculator window

Windows 10 currently offers two very different ways of doing
“windowing” (resizing of apps, customization of title bars,
etc). While the Win32 model offers very powerful windowing
scenarios, UWP apps windowing is limited in capabilities.

With Project Reunion, Microsoft will allow developers to have
the power of Win32 windowing at their disposal and the company
will still provide unified APIs that can improve consistency
across apps.

In simple words, both UWP and Win32 apps will finally have
access to all the layers of the new windowing APIs. This move
could address the consistency problem, fix the windowing
experience of UWP apps, and unify the two app models.

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