[sethk]

As discussed in #2096, here is an additional header file with some RAII-style wrappers for common ImGui objects.

[learn-more]

@sethk There are some generated classes that are outdated now:
PushAllowKeyboardFocus should be replaced with PushTabStop
BeginChildFrame could be replaced with BeginChild(..., ImGuiChildFlags_FrameStyle, ...);, or removed outright.
BeginPopupContextWindow does not take a boolean, but an ImGuiPopupFlags

[LRDPRDX]

Nice suggestion. I've also come up with a similar idea. If you're interested here is my addition:

template<std::size_t N>
struct Color
{
    Color (const std::pair<ImGuiCol, ImVec4> (&colors)[N], bool condition = true) :
        condition(condition)
    {
        if(condition)
            for(const auto& [code, color] : colors)
                ImGui::PushStyleColor(code, color);
    }

    ~Color()
    {
        if(condition)
            ImGui::PopStyleColor(N);
    }

    bool condition { true };
};

and the usage:

    context::Color c ({
        { ImGuiCol_TitleBg,           colorByName("red") },
        { ImGuiCol_TitleBgActive,     colorByName("red") },
        { ImGuiCol_ResizeGrip,        colorByName("red") },
        { ImGuiCol_ResizeGripHovered, colorByName("redLighter") },
        { ImGuiCol_ResizeGripActive,  colorByName("redLight") },
        { ImGuiCol_Button,            colorByName("red") },
        { ImGuiCol_ButtonHovered,     colorByName("redLighter") },
        { ImGuiCol_ButtonActive,      colorByName("redLight") },
        { ImGuiCol_FrameBg,           colorByName("red") },
    }, not gui.errors.empty());

I use it mostly to highlight some windows in case of errors: