imgui/misc/cpp/imgui_stdlib.h

// imgui_stdlib.h
// Wrappers for C++ standard library (STL) types (std::string, etc.)
// This is also an example of how you may wrap your own similar types.

// Compatibility:
// - std::string support is only guaranteed to work from C++11. 
//   If you try to use it pre-C++11, please share your findings (w/ info about compiler/architecture)

// Changelog:
// - v0.10: Initial version. Added InputText() / InputTextMultiline() calls with std::string

#pragma once

#include <string>

namespace ImGui
{
    // ImGui::InputText() with std::string
    // Because text input needs dynamic resizing, we need to setup a callback to grow the capacity
    IMGUI_API bool  InputText(const char* label, std::string* str, ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
    IMGUI_API bool  InputTextMultiline(const char* label, std::string* str, const ImVec2& size = ImVec2(0, 0), ImGuiInputTextFlags flags = 0, ImGuiInputTextCallback callback = NULL, void* user_data = NULL);
}