VS: Introduce IsInSolution to check whether a target is in sln file

Previously, different versions of VS Generators checked whether a target
was in .sln file or not by checking whether the target was to be written
to build system or not.

As we move `ZERO_CHECK.vcxproj` to `.proj`, we want to exclude those
files from being written to `.sln` files too. This commit introduces
`IsInSolution()` at `cmGlobalVisualStudioGenerator` level which can be
customized at specific versioned Generator when needed.

1 files changed, 2 insertions, 2 deletions

diff --git a/Source/cmGlobalVisualStudio7Generator.cxx b/Source/cmGlobalVisualStudio7Generator.cxx
index 942b61a..1c10fb3 100644
--- a/Source/cmGlobalVisualStudio7Generator.cxx
+++ b/Source/cmGlobalVisualStudio7Generator.cxx
@@ -359,7 +359,7 @@ void cmGlobalVisualStudio7Generator::WriteTargetConfigurations(
   // loop over again and write out configurations for each target
   // in the solution
   for (cmGeneratorTarget const* target : projectTargets) {
-    if (!target->IsInBuildSystem()) {
+    if (!this->IsInSolution(target)) {
       continue;
     }
     cmValue expath = target->GetProperty("EXTERNAL_MSPROJECT");
@@ -396,7 +396,7 @@ void cmGlobalVisualStudio7Generator::WriteTargetsToSolution(
   VisualStudioFolders.clear();
 
   for (cmGeneratorTarget const* target : projectTargets) {
-    if (!target->IsInBuildSystem()) {
+    if (!this->IsInSolution(target)) {
       continue;
     }
     bool written = false;