nanoglfw.cpp

#include <windows.h>
#include <GL/gl.h>
#include <stdio.h>

#pragma comment(lib, "opengl32.lib")

void glview()
{
	HWND hWnd = CreateWindow(L"ListBox", L"Title", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, NULL, NULL);
	HDC hDC = GetDC(hWnd);

	PIXELFORMATDESCRIPTOR pfd = { sizeof(pfd), 1, PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER, 0, 32 };
	SetPixelFormat(hDC, ChoosePixelFormat(hDC, &pfd), &pfd);
	wglMakeCurrent(hDC, wglCreateContext(hDC));

	ShowWindow(hWnd, SW_SHOWNORMAL);

	MSG msg;

	while (GetMessage(&msg, hWnd, 0, 0) && msg.message)
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);

		RECT rect;
		GetClientRect(hWnd, &rect);

		glViewport(0, 0, rect.right - rect.left, rect.bottom - rect.top);
		glClear(GL_COLOR_BUFFER_BIT);
		glBegin(GL_TRIANGLES);
		glColor3f(1.0f, 0.0f, 0.0f);
		glVertex2i(0, 1);
		glColor3f(0.0f, 1.0f, 0.0f);
		glVertex2i(-1, -1);
		glColor3f(0.0f, 0.0f, 1.0f);
		glVertex2i(1, -1);
		glEnd();

		SwapBuffers(hDC);
	}
}