We have made a hand-written version of the popular imgui-knobs library. To compile it, you need to add the imgui-knobs.h header to your header include path.

The cimgui-knobs.h header looks like this:

typedef enum ImGuiKnob_Flags_
{
    CImGuiKnob_flags_None            = 0,
    CImGuiKnob_Flags_NoTitle         = 1 << 0,
    CImGuiKnob_Flags_NoInput         = 1 << 1,
    CImGuiKnob_Flags_ValueTooltip    = 1 << 2,
    CImGuiKnob_Flags_DragHorizontal  = 1 << 3,
    CImGuiKnob_Flags_DragVertical    = 1 << 4,
    CImGuiKnob_Flags_Logarithmic     = 1 << 5,
    CImGuiKnob_Flags_AlwaysClamp     = 1 << 6
} ImGuiKnob_Flags_;

typedef enum ImGuiKnob_Variant_
{
    CImGuiKnob_Variant_Tick      = 1 << 0,
    CImGuiKnob_Variant_Dot       = 1 << 1,
    CImGuiKnob_Variant_Wiper     = 1 << 2,
    CImGuiKnob_Variant_WiperOnly = 1 << 3,
    CImGuiKnob_Variant_WiperDot  = 1 << 4,
    CImGuiKnob_Variant_Stepped   = 1 << 5,
    CImGuiKnob_Variant_Space     = 1 << 6,
} ImGuiKnob_Variant_;

typedef struct ImGuiKnob_color_set_t
{
    CImXVec4 base;
    CImXVec4 hovered;
    CImXVec4 active;
} ImGuiKnob_color_set;

bool ImGuiKnobs_Knob(const char* label, float* p_value, float v_min, float v_max);
bool ImGuiKnobs_KnobEx(const char* label, float* p_value, float v_min, float v_max, float speed, const char* format, ImGuiKnob_Variant variant, float size, ImGuiKnob_Flags flags, int steps, float angle_min, float angle_max);
bool ImGuiKnobs_KnobInt(const char* label, int* p_value, int v_min, int v_max);
bool ImGuiKnobs_KnobIntEx(const char* label, int* p_value, int v_min, int v_max, float speed, const char* format, ImGuiKnob_Variant variant, float size, ImGuiKnob_Flags flags, int steps, float angle_min, float angle_max);

As you can see, the major differences in the API between the C and C++ versions are:

1. The ImGuiKnobs namespace is replaced by prefixing functions with ImGuiKnobs_
2. Default arguments are missing (can be seen as a comment in the header for reference)
3. Enum members are prefixed with C to avoid compilation clashes with the regular imgui-knobs library