Method clear

Externals/imgui-1.46/Include/imgui.h:891–891

    int                 size() const { return Buf.Size - 1; }
    bool                empty() { return Buf.Size >= 2; }
    void                clear() { Buf.clear(); Buf.push_back(0); }
    const char*         c_str() const { return Buf.Data; }
    IMGUI_API void      append(const char* fmt, ...) IM_PRINTFARGS(2);
    IMGUI_API void      appendv(const char* fmt, va_list args);