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Dear Experts,<br />
<br />
I'm doing my migration of my own coding application (C++) from Win XP to Win 8.<br />
I'm concerning the Win APIs compatibility.<br />
The main question is &quot;Will my used API work well on Win 8 as same as it used to do on Win XP&quot;.<br />
<br />
I found that, in Win XP (C:\Windos\System32\) there's some dll like user32.dll, kernel32.dll,....<br />
But in windows 8 (C:\Windows\System32), there're:<br />
&nbsp; &nbsp;+ &nbsp;not only user32.dll and kernel32.dll<br />
&nbsp; &nbsp;+ &nbsp;but also api-ms-win-....dll and \downlevel\api-ms-win-....<wbr />dll (such as api-ms-win-core-heap-l1-1-<wbr />0.dll)<br />
So, please explain me,<br />
&nbsp; &nbsp;+ &nbsp;What's api-ms-win-....dll stand for?<br />
&nbsp; &nbsp;+ &nbsp;Does this make any trouble to compatibility of Win APIs.<br />
<br />
Regarding your soon responses.<br />
With best regards.
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Dear Experts,

I'm doing my migration of my own coding application (C++) from Win XP to Win 8.
I'm concerning the Win APIs compatibility.
The main question is "Will my used API work well on Win 8 as same as it used to do on Win XP".

I found that, in Win XP (C:\Windos\System32\) there's some dll like user32.dll, kernel32.dll,....
But in windows 8 (C:\Windows\System32), there're:
   +  not only user32.dll and kernel32.dll
   +  but also api-ms-win-....dll and \downlevel\api-ms-win-....dll (such as api-ms-win-core-heap-l1-1-0.dll)
So, please explain me,
   +  What's api-ms-win-....dll stand for?
   +  Does this make any trouble to compatibility of Win APIs.

Regarding your soon responses.
With best regards.

Win APIs on windows 8

Windows 8 is a personal computer operating system developed by Microsoft as part of the Windows NT family of operating systems, with an emphasis on improving its user experience on tablets. In particular, these changes included a touch-optimized Windows shell based on Microsoft's "Metro" design language, the Start screen, a new platform for developing apps with an emphasis on touchscreen input, integration with online services, support for USB 3.0, Advanced Format hard drives, near field communications, and cloud computing. Additional security features were introduced, such as built-in antivirus software, integration with Microsoft SmartScreen phishing filtering service and support for UEFI Secure Boot on supported devices with UEFI firmware.

Windows 8

Microsoft Windows XP is the sixth release of the NT series of operating systems, and was the first to be marketed in a variety of editions: XP Home and XP Professional, designed for business and power users. The advanced features in XP Professional are generally disabled in Home Edition, but are there and can be activated. There were two 64-bit editions, an embedded edition and a tablet edition.

Windows XP

C++ is an intermediate-level general-purpose programming language, not to be confused with C or C#. It was developed as a set of extensions to the C programming language to improve type-safety and add support for automatic resource management, object-orientation, generic programming, and exception handling, among other features.