add an icon to MS Windows VC exe

src/winmain.c

@@ -862,7 +862,7 @@ WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCm
     hwMainClass.cbClsExtra      = 0;
     hwMainClass.cbWndExtra      = 0;
     hwMainClass.hInstance       = hInst;
-    hwMainClass.hIcon           = LoadIcon(hInst, MAKEINTRESOURCE(1));
+    hwMainClass.hIcon           = LoadIcon(hInst, MAKEINTRESOURCE(101));
     hwMainClass.hCursor         = LoadCursor(NULL, IDC_ARROW);
     hwMainClass.hbrBackground   = GetStockObject(LTGRAY_BRUSH);
     hwMainClass.lpszMenuName    = NULL;

visualc/resource.h

@@ -0,0 +1,16 @@
+//{{NO_DEPENDENCIES}}
+// Von Microsoft Visual C++ generierte Includedatei.
+// Verwendet durch vngspice.rc
+//
+#define IDI_ICON1                       101
+
+// Next default values for new objects
+// 
+#ifdef APSTUDIO_INVOKED
+#ifndef APSTUDIO_READONLY_SYMBOLS
+#define _APS_NEXT_RESOURCE_VALUE        104
+#define _APS_NEXT_COMMAND_VALUE         40001
+#define _APS_NEXT_CONTROL_VALUE         1001
+#define _APS_NEXT_SYMED_VALUE           101
+#endif
+#endif

visualc/vngspice.vcxproj

@@ -1281,6 +1281,7 @@
     <ClInclude Include=".\src\include\stdint.h" />
     <ClInclude Include=".\tmp-bison\inpptree-parser.h" />
     <ClInclude Include=".\tmp-bison\parse-bison.h" />
+    <ClInclude Include="resource.h" />
   </ItemGroup>
   <ItemGroup>
     <CustomBuild Include="..\src\frontend\parse-bison.y;..\src\spicelib\parser\inpptree-parser.y">
@@ -2630,6 +2631,9 @@
     <ClCompile Include=".\src\msvc-compat.c" />
     <ClCompile Include=".\tmp-bison\parse-bison.c" />
   </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="vngspice.rc" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>