fix: Crash under Wine when adding an new object

Author: NicusorN5

3DRadSpace/3DRadSpace_Editor_WindowsDX11/Frontend/Windows/AddObjectDialog.cpp

@@ -58,8 +58,8 @@ INT_PTR WINAPI AddObjectDialog_DlgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARA
 					{
 						auto& list = Engine3DRadSpace::Internal::GetInternalObjectsList();
 						Logging::PrintMessage(std::format("AddObj: e3drsp_internal_objects_list 0x{:x}", reinterpret_cast<uintptr_t>(list.data())));
-						auto obj = EditObject(hwnd, aod->hInstance, list[item->iItem], aod->_content);
-						EndDialog(hwnd, reinterpret_cast<INT_PTR>(obj));
+						aod->Result = EditObject(hwnd, aod->hInstance, list[item->iItem], aod->_content);
+						EndDialog(hwnd, IDOK);
 					}
 					break;
 				}
@@ -112,7 +112,8 @@ AddObjectDialog::AddObjectDialog(HWND owner_window, HINSTANCE instance, Content:
 
 IObject* AddObjectDialog::ShowDialog()
 {
-	return reinterpret_cast<IObject*>(Dialog::ShowDialog(static_cast<void *>(this)));
+	auto r = Dialog::ShowDialog(static_cast<void *>(this));
+	return r == IDOK ? static_cast<IObject*>(Result) : nullptr;
 }
 
 struct objectItem

3DRadSpace/3DRadSpace_Editor_WindowsDX11/Frontend/Windows/AddObjectDialog.hpp

@@ -20,6 +20,8 @@ class AddObjectDialog : public Dialog
 public:
 	AddObjectDialog(HWND owner, HINSTANCE hInstance, Engine3DRadSpace::Content::ContentManager *content);
 
+	void* Result = nullptr;
+
 	[[nodiscard]] Engine3DRadSpace::Objects::IObject* ShowDialog();
 
 	friend INT_PTR WINAPI AddObjectDialog_DlgProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam);

3DRadSpace/Engine3DRadSpace_Tests/Main.cpp

@@ -48,10 +48,15 @@ int WinMain(
 	(void)lpCmdLine;
 	(void)nShowCmd;
 
-	Engine3DRadSpace::Plugins::LoadPlugin("Plugins\\3DRadSpace.Scripting.CSharp.dll");
+	auto r = Engine3DRadSpace::Plugins::LoadPlugin("Plugins\\3DRadSpace.Scripting.CSharp.dll");
+	if (!r.has_value())
+	{
+		return -1;
+	}
 
 	MyGame game;
 	game.Run();
+	return 0;
 }
 
 int main(int argc, char** argv) {