GLFWcursorposfun test

main.d

import std.stdio;
import derelict.opengl3.gl3;
import derelict.glfw3.glfw3;

static bool playing = true;

extern (C) void keyCallback(GLFWwindow* w, int key, int action)
{
	if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
		playing = false;
	}
}

extern (C) void mouseButtonCallback(GLFWwindow* w, int button, int action) {
	if (button == GLFW_MOUSE_BUTTON_LEFT && action == GLFW_PRESS) {
		writeln("Left clicked.");
	}
}

extern (C) void cursorPosCallback(GLFWwindow* w, double x, double y) {
	writefln("Cursor now at (%s,%s)", x, y);
}

void main(){
    DerelictGL3.load();
	DerelictGLFW3.load();

	glfwInit();

	GLFWwindow* window = glfwCreateWindow(640,480,"Hello, World!",null,null);

	glfwSetKeyCallback(window, &keyCallback);
	glfwSetMouseButtonCallback(window, &mouseButtonCallback);
	glfwSetCursorPosCallback(window, &cursorPosCallback);

	while (playing) {
		glfwPollEvents();

		glClear(GL_COLOR_BUFFER_BIT);

		glfwSwapBuffers(window);
	}

	glfwDestroyWindow(window);
	
	glfwTerminate();
}

Makefile

all:
	dmd main.d -L-lDerelictGL3 -L-lDerelictGLFW3 -L-lDerelictUtil -L-ldl