winMain.h

Author: malytomas

sources/CMakeLists.txt

@@ -77,11 +77,6 @@ file(GLOB_RECURSE cage-engine-sources "libengine/*" "include/cage-engine/*")
 add_library(cage-engine SHARED ${cage-engine-sources})
 target_link_libraries(cage-engine PRIVATE cubeb glfw openxr_loader)
 target_link_libraries(cage-engine PUBLIC cage-core glad)
-if(WIN32)
-	set_source_files_properties(libengine/virtualReality/platforms.cpp PROPERTIES COMPILE_DEFINITIONS "XR_USE_PLATFORM_WIN32")
-else()
-	# todo
-endif()
 file(GLOB_RECURSE controller-bindings RELATIVE "${CMAKE_CURRENT_LIST_DIR}" "controller-bindings/*")
 set(index 0)
 foreach(cb IN ITEMS ${controller-bindings})

sources/include/cage-engine/winMain.h

@@ -0,0 +1,32 @@
+#ifndef guard_winMain_h_jh4ser564uj
+#define guard_winMain_h_jh4ser564uj
+
+#include <cage-engine/core.h>
+
+#ifdef _WIN32
+
+	#ifndef VC_EXTRALEAN
+		#define VC_EXTRALEAN
+	#endif
+	#ifndef NOMINMAX
+		#define NOMINMAX
+	#endif
+	#include <windows.h>
+
+namespace cage
+{
+	namespace privat
+	{
+		CAGE_ENGINE_API std::pair<int, const char **> winMainParams();
+	}
+}
+
+int main(int argc, const char *args[]);
+
+int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
+{
+	const auto cmd = ::cage::privat::winMainParams();
+	return ::main(cmd.first, cmd.second);
+}
+#endif
+#endif

sources/libengine/virtualReality/platforms.cpp

@@ -4,6 +4,7 @@
 	#endif
 	#include <Windows.h>
 	#pragma comment(lib, "opengl32") // wglGetCurrentDC
+	#define XR_USE_PLATFORM_WIN32
 #endif // CAGE_SYSTEM_WINDOWS
 
 #define XR_USE_GRAPHICS_API_OPENGL
@@ -51,7 +52,7 @@ namespace cage
 
 #else
 
-			CAGE_THROW_CRITICAL(Exception, "openxr currently works on windows only");
+			CAGE_THROW_CRITICAL(Exception, "cage openxr currently works on windows only");
 
 			char binding[100] = {}; // dummy structure to allow compiling
 			//XrGraphicsBindingOpenGLXlibKHR binding;

sources/libengine/winMain.cpp

@@ -0,0 +1,56 @@
+#ifdef _WIN32
+
+	#include <cage-engine/core.h>
+
+	#ifndef VC_EXTRALEAN
+		#define VC_EXTRALEAN
+	#endif
+	#ifndef NOMINMAX
+		#define NOMINMAX
+	#endif
+	#include <windows.h>
+
+namespace cage
+{
+	namespace privat
+	{
+		CAGE_API_EXPORT std::pair<int, const char **> winMainParams()
+		{
+			using namespace cage;
+
+			CAGE_LOG(SeverityEnum::Info, "cage-engine", "winMain parsing parameters");
+
+			static int consoleDummy = []()
+			{
+				AllocConsole(); // allocate new console for sub-programs
+				ShowWindow(GetConsoleWindow(), SW_HIDE);
+				return 0;
+			}();
+			(void)consoleDummy;
+
+			LPWSTR cmdLine = GetCommandLineW();
+			int argc;
+			LPWSTR *argvW = CommandLineToArgvW(cmdLine, &argc);
+
+			if (argvW == nullptr)
+			{
+				static_assert(sizeof(DWORD) == sizeof(uint32));
+				CAGE_LOG_THROW(Stringizer() + "error code: " + (uint32)GetLastError());
+				CAGE_THROW_CRITICAL(Exception, "failed to convert command line arguments to an array (CommandLineToArgvW)");
+			}
+
+			// convert wide char to multibyte
+			char **argv = new char *[argc];
+			for (int i = 0; i < argc; i++)
+			{
+				size_t len = wcslen(argvW[i]) + 1;
+				argv[i] = new char[len];
+				wcstombs(argv[i], argvW[i], len);
+			}
+
+			return { argc, (const char **)argv };
+		}
+	}
+}
+
+#endif