Allow building on Visual Studio 2022 (#13055)

NVDA now builds with Visual Studio 2019. Version 2022 was released recently.

Description of how this pull request fixes the issue:
1. Updates SCons to version 4.3.0.
2. Allows building with Visual Studio 2019 and newer.
3. Updates the readme with download url's that are likely to be pretty stable in the near and more distant future.

nvdaHelper/archBuild_sconscript

@@ -73,9 +73,9 @@ def COMProxyDllBuilder(env,target,source,proxyClsid):
 	return proxyDll
 env.AddMethod(COMProxyDllBuilder,'COMProxyDll')
 
-# We only support compiling with MSVC 14.2 (2019)
-if not env.get('MSVC_VERSION')=='14.2':
-	raise RuntimeError("Visual C++ 14.2 (Visual Studio 2019) not found")
+# We only support compiling with MSVC 14.2 (2019) or newer
+if not env.get('MSVC_VERSION') or tuple(map(int, env.get('MSVC_VERSION').split("."))) < (14, 2):
+	raise RuntimeError("Visual C++ 14.2 (Visual Studio 2019) or newer not found")
 
 
 TARGET_ARCH=env['TARGET_ARCH']

readme.md

@@ -57,11 +57,12 @@ The following dependencies need to be installed on your system:
 
 * [Python](https://www.python.org/), version 3.7, 32 bit
 	* Use latest minor version if possible.
-* Microsoft Visual Studio 2019:
+* Microsoft Visual Studio 2019 or 2022:
 	* To replicate the production build environment, use the [version of Visual Studio that AppVeyor is using](https://www.appveyor.com/docs/windows-images-software/#visual-studio-2019). 
-	* Download from https://visualstudio.microsoft.com/downloads/
-		* When you do not use the Visual Studio IDE itself, you can download the build tools under the Tools for Visual Studio 2019 expandable heading
-		* When you are intending to use the Visual Studio IDE (not required for NVDA development), you can download the community version under the Visual Studio 2019 expandable heading
+		* When you do not use the Visual Studio IDE itself, you can download the [build tools](https://aka.ms/vs/16/release/vs_BuildTools.exe)
+		* When you are intending to use the Visual Studio IDE (not required for NVDA development), you can download [the community version](https://aka.ms/vs/16/release/vs_Community.exe), which is also used by appveyor
+		* The Professional and Enterprise versions are also supported
+		* Preview versions are *not* supported
 	* When installing Visual Studio, you need to enable the following:
 		* In the list  on the Workloads tab
 			* in the Windows grouping:

requirements.txt

@@ -1,5 +1,5 @@
 # NVDA's build system is SCons
-SCons==4.1.0.post1
+SCons==4.3.0
 
 # NVDA's runtime dependencies
 comtypes==1.1.8

user_docs/en/changes.t2t

@@ -29,6 +29,8 @@ What's New in NVDA
 
 == Changes for Developers ==
 - Note: this is a Add-on API compatibility breaking release. Add-ons will need to be re-tested and have their manifest updated.
+- Compiling NVDA dependencies with Visual Studio 2022 (17.0) is now supported. For development and release builds, Visual Studio 2019 is still used. (#13033)
+- Updated SCons to version 4.3.0.
 - Updated py2exe to version 0.11.0.1. (#12357, #13066)
 - ``NVDAObjects.UIA.winConsoleUIA.WinConsoleUIA.isImprovedTextRangeAvailable`` has been removed. Use ``apiLevel`` instead. (#12955, #12660)
 - ``TVItemStruct`` has been removed from ``sysTreeView32``. (#12935)