Function ScaleWindow

include/imgui/imgui.cpp:15881–15888

}

static void ScaleWindow(ImGuiWindow* window, float scale)
{
    ImVec2 origin = window->Viewport->Pos;
    window->Pos = ImFloor((window->Pos - origin) * scale + origin);
    window->Size = ImTrunc(window->Size * scale);
    window->SizeFull = ImTrunc(window->SizeFull * scale);
    window->ContentSize = ImTrunc(window->ContentSize * scale);
}

// Scale all windows (position, size). Use when e.g. changing DPI. (This is a lossy operation!)
void ImGui::ScaleWindowsInViewport(ImGuiViewportP* viewport, float scale)