ImGui resizes itself to git content when setting size to 0.

[SamHoque]

Version/Branch of Dear ImGui:

Version 1.90.4, Branch: master

Back-ends:

imgui_impl_opengl3.cpp + imgui_impl_win32.cpp

Compiler, OS:

Windows 11 + CMake (Using Ninja)

Full config/build information:

No response

Details:

My Issue/Question:

When setting the size of ImGui to 0, 0 using SetWindowSize it resizes itself to fit the content, attached a gif, the size should be 0,0 but it resizes itself to make the checkbox visible.

Screenshots/Video:

Minimal, Complete and Verifiable Example code:

ImGui::Begin(name.c_str(), nullptr, ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoTitleBar);
ImGui::SetWindowSize(ImVec2(0, 0));
ImGui::End();

[SamHoque]

Setting It to ImVec2(1, 1) works just fine. I might just use that, if its not possible to completely resize it to 0.

[SamHoque]

GUMTAmXamQ.mp4

would be nice, if I could get it to resize even smaller, but also adding a lerp to the alpha, it doesn't look half as bad.

[ocornut]

Sorry but #1586