添加opengl框架并测试渲染第一个三角形

Sandbox/src/SandboxApp.cpp

@@ -1,17 +1,55 @@
 #include <Hazel.h>
 
+#include "imgui.h"
+#include "imgui_impl_sdl2.h"
+#include "imgui_impl_opengl3.h"
+
+
+class ExampleLayer : public Hazel::Layer
+{
+public:
+	ExampleLayer() : Layer("ExampleLayer")
+	{
+	}
+
+	void OnUpdate() override
+	{
+	}
+
+	void OnEvent(SDL_Event& event) override
+	{
+		if (event.type == SDL_EVENT_KEY_DOWN)
+		{
+			HZ_CORE_TRACE("{}", event.key.key);
+		}
+	}
+
+	void OnImGuiRender() override
+	{
+		ImGui::Begin("Hazel Layer");
+		ImGui::Text("Hello World");
+		ImGui::End();
+
+
+
+	}
+
+};
+
 
 class Sandbox : public Hazel::Application
 {
 public:
-	Sandbox();
+	Sandbox()
+	{
+		PushLayer(new ExampleLayer());
+	}
 	~Sandbox();
 
 private:
 
 };
 
-Sandbox::Sandbox() = default;
 
 Sandbox::~Sandbox() = default;