Method _PopUnusedDrawCmd

tutorials/common/imgui/imgui_draw.cpp:449–456

Pop trailing draw command (used before merging or presenting to user) Note that this leaves the ImDrawList in a state unfit for further commands, as most code assume that CmdBuffer.Size > 0 && CmdBuffer.back().UserCallback == NULL

// Pop trailing draw command (used before merging or presenting to user)
// Note that this leaves the ImDrawList in a state unfit for further commands, as most code assume that CmdBuffer.Size > 0 && CmdBuffer.back().UserCallback == NULL
void ImDrawList::_PopUnusedDrawCmd()
{
    if (CmdBuffer.Size == 0)
        return;
    ImDrawCmd* curr_cmd = &CmdBuffer.Data[CmdBuffer.Size - 1];
    if (curr_cmd->ElemCount == 0 && curr_cmd->UserCallback == NULL)
        CmdBuffer.pop_back();
}

void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
{