Imgui with win32 and OpenGl

[anshul-soni]

So I am using win32 api to create my window and opengl for rendering.
I am little bit confused on how to implement imgui withing my interface. I couldnt find any example which does that.
Can you please help me out with the same ?
Thanks.

[ocornut]

You may want to look at those example too
#281

[anshul-soni]

Thanks a lot for that, thats really helpful !!
I actually cant do that, because my window is created by my window system and opengl is initialized in my graphics system. But I got it working. 👍

[ocornut]

Good to hear. Anything you stumbled on? Looking for idea on how we can improve the documentation for future users.

[anshul-soni]

So I was able to do everything but the input.
My input call back method is inside windows system and its assigned to windows in there.
My editor is using the libraries of my engine to run, so I am not sure how to handle the input yet.

[anshul-soni]

So this is code of main in my editor, which lets me render the imgui. But still couldnt figure out how to handle inputs in imgui and my engine with this approach. One thing I did was pass the wndproc from the imgui to my window system which lets the imgui handle the inputs, but my engine also needs the input !! Because object picking and movement will be handled by the engine not imgui !!

   enyin::Engine engine;
    engine.Start(hInstance, WndProc);
    HWND hwnd = enyin::WindowSystem::GetInstance().getWindowHandler();
    ImGui_Init(hwnd);
    while (true)
    {
        engine.GameLoop();
        ImGui_Update();
    }
    engine.Release();

[ocornut]

Just call both, maybe call the ImGui wndproc help at the beginning of yours.

Also you probably want ImGui::NewFrame to be called early in your frame (aka inside or before GameLoop) and ImGui::Render() to be called at the very end.

[anshul-soni]

👍 So in each case inside the callback for imgui, I am in turn calling the callback of my engine.
And it works.
Thanks a lot 😄

[anshul-soni]

ImGui::GetIO().Framerate doesnt work, its always -1

[ocornut]

You aren't setting DeltaTime every frame.

On 2015/10/16, at 0:36, Anshul Soni [email protected] wrote:

ImGui::GetIO().Framerate doesnt work, its always -1

―
Reply to this email directly or view it on GitHub.

[anshul-soni]

Cool !! I didn't see that thing in newframe !!
Now looks like I got everything up and running.