Frameless GLFW/ImGui window in MacOSX

BorderlessWindowMacOSXFile.m

//Get the native window
NSWindow* cocoaWindow = glfwGetCocoaWindow(glfwWindowPtr);

NSUInteger lWindowStyle = NSWindowStyleMaskTitled |
                          NSWindowStyleMaskClosable |
                          NSWindowStyleMaskMiniaturizable |
                          NSWindowStyleMaskResizable |
                          NSWindowStyleMaskUnifiedTitleAndToolbar |
                          NSWindowStyleMaskFullSizeContentView;
//Set the style mask
[cocoaWindow setStyleMask:lWindowStyle];
cocoaWindow.titlebarAppearsTransparent = YES;
cocoaWindow.movableByWindowBackground  = YES; //Not really necessary

DraggingWindowImGuiFile.cpp

//I'm using the menu bar for dragging
//... after creating your menus inside ImGui::BeginMenuBar()
//Window dragging from ImGui
ImRect menuBarRect = ImRect(0, 0, WINDOW_WIDTH, MENU_BAR_HEIGHT);
ImVec2 mouseDelta = ImGui::GetIO().MouseDelta;
ImGui::InvisibleButton("##windowdragging", menuBarRect.Max);
if(ImGui::IsItemActive() && ImGui::IsMouseDragging(0, 0.0f))
{
    MPMainWindow::instance->addWindowDeltaPos(mouseDelta.x, mouseDelta.y);
  
    //GLFW window dragging
    int newPosX, newPosY;
    glfwGetWindowPos(glfwWindowPtr, &newPosX, &newPosY);
    glfwSetWindowPos(glfwWindowPtr, newPosX + mouseDelta.x, newPosY + mouseDelta.y);

    //Update mouse previous position
    ImGui::GetIO().MousePosPrev.x = ImGui::GetIO().MousePos.x - mouseDelta.x;
    ImGui::GetIO().MousePosPrev.y = ImGui::GetIO().MousePos.y - mouseDelta.y;
}
//... ImGui::EndMenuBar();