Support minimal dependency linux build.

apps/sample-gui/CMakeLists.txt

@@ -0,0 +1,27 @@
+   
+if(WIN32)
+    add_executable(sample_gui_win WIN32 gui-main-win.cpp)
+    target_include_directories(sample_gui PUBLIC
+                              "${PROJECT_SOURCE_DIR}/src/console"
+                              "${PROJECT_SOURCE_DIR}/src/client"
+                              )
+    target_link_libraries(sample_gui_win PUBLIC client windows console core 
+        network database geometry audio web)
+    set_property(TARGET sample_gui_win PROPERTY FOLDER apps)
+else()
+    find_package(X11 QUIET)
+    if(X11_FOUND)
+        add_executable(sample_gui gui-main.cpp)
+        target_include_directories(sample_gui PUBLIC
+        	                  "${PROJECT_SOURCE_DIR}/src/console"
+        	                  "${PROJECT_SOURCE_DIR}/src/client"
+        	                  )
+        target_link_libraries(sample_gui PUBLIC client windows console core 
+            network database geometry audio web)
+        set_property(TARGET sample_gui PROPERTY FOLDER apps)
+    else()
+        message(STATUS "Skipping sample GUI as no X11 dev support")
+    endif()
+endif()
+
+

apps/sample-gui/gui-main-win.cpp

@@ -0,0 +1,67 @@
+#ifndef UNICODE
+#define UNICODE
+#endif 
+
+#include "MainApplication.h"
+#include "GuiApplication.h"
+#include "CommandLineArgs.h"
+#include "Win32WindowInterface.h"
+#include "FileLogger.h"
+#include "StringUtils.h"
+
+#include "windows.h"
+
+#include <iostream>
+#include <vector>
+#include <string>
+
+void initializeCommandLineArgs(CommandLineArgs* args)
+{
+    int nArgs{ 0 };
+    auto szArglist = CommandLineToArgvW(GetCommandLineW(), &nArgs);
+    if (szArglist == nullptr)
+    {
+        return;
+    }
+
+    std::vector<std::string> windowsArgs(nArgs);
+    for (int idx = 0; idx < nArgs; idx++)
+    {
+        windowsArgs[idx] = StringUtils::convert(szArglist[idx]);
+    }
+    LocalFree(szArglist);
+
+    args->Process(windowsArgs);
+}
+
+int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
+{
+    std::ofstream out("out.txt");
+    std::cout.rdbuf(out.rdbuf());
+
+    auto args = CommandLineArgs::CreateUnique();
+    initializeCommandLineArgs(args.get());
+    args->RecordLaunchPath();
+
+    // Start the main app
+    auto main_app = MainApplication::Create();
+
+    auto applicationContext = std::make_unique<Win32ApplicationContext>();
+    applicationContext->hInstance = reinterpret_cast<void*>(hInstance);
+    applicationContext->nCmdShow = nCmdShow;
+
+    main_app->Initialize(std::move(args), std::move(applicationContext));
+
+    MLOG_INFO("Creating GUI Application");
+
+    // Start the gui application
+    auto gui_app = GuiApplication();
+    gui_app.SetMainApplication(main_app);
+
+    MLOG_INFO("Running GUI Application");
+    gui_app.Run();
+
+    main_app->ShutDown();
+    return 0;
+}
+

apps/sample-gui/gui-main.cpp

@@ -0,0 +1,24 @@
+#include <memory>
+
+#include "GuiApplication.h"
+#include "MainApplication.h"
+#include "CommandLineArgs.h"
+
+int main(int argc, char *argv[])
+{
+    auto args = CommandLineArgs::Create();
+    args->process(argc, argv);
+    args->recordLaunchPath();
+
+    // Start the main app
+    auto main_app = MainApplication::Create();
+    main_app->Initialize(std::move(args));
+
+    // Start the gui app
+    auto gui_app = GuiApplication();
+    gui_app.SetMainApplication(main_app);
+    gui_app.Run();
+
+    main_app->ShutDown();
+    return 0;
+}