ocornut / ocornut/imgui

GLFW Mouse Passthrough Broken in Docking Branch

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Description

Version/Branch of Dear ImGui:

Version: git commit 31d033c9d8d64fb9047cdcd731890f1fb5f85db2
Branch: docking

Back-end/Renderer/Compiler/OS

Back-ends: imgui_impl_glfw.cpp + imgui_impl_opengl3.cpp
Operating System: Windows

My Issue/Question:

GLFW mouse passthrough does not appear work when lines 73-77 of imgui_impl_glfw.cpp exist. I would submit this in a PR, but I'm hesitant as comments on those lines seem to suggest its for some support reasons, so by removing them I might be messing something else up.

Standalone, minimal, complete and verifiable example:

glfwSetWindowAttrib(Window, GLFW_MOUSE_PASSTHROUGH, GLFW_TRUE);

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by inspecting lines 73-77 of imgui_impl_glfw.cpp on the docking branch and reproduce the issue on Windows with glfwSetWindowAttrib(Window, GLFW_MOUSE_PASSTHROUGH, GLFW_TRUE). Review the support rationale in the nearby comments and verify the behavior with imgui_impl_opengl3.cpp. Done means GLFW mouse passthrough works without breaking the support described there.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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