imgui/examples/example_null/main.cpp at master · codeage/imgui · GitHub

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// dear imgui: "null" example application

// (compile and link imgui, create context, run headless with NO INPUTS, NO GRAPHICS OUTPUT)

// This is useful to test building, but you cannot interact with anything here!

#include "imgui.h"

#include <stdio.h>

int main(int, char**)

{

IMGUI_CHECKVERSION();

ImGui::CreateContext();

ImGuiIO& io = ImGui::GetIO();

// Build atlas

unsigned char* tex_pixels = nullptr;

int tex_w, tex_h;

io.Fonts->GetTexDataAsRGBA32(&tex_pixels, &tex_w, &tex_h);

for (int n = 0; n < 20; n++)

{

printf("NewFrame() %d\n", n);

io.DisplaySize = ImVec2(1920, 1080);

io.DeltaTime = 1.0f / 60.0f;

ImGui::NewFrame();

static float f = 0.0f;

ImGui::Text("Hello, world!");

ImGui::SliderFloat("float", &f, 0.0f, 1.0f);

ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / io.Framerate, io.Framerate);

ImGui::ShowDemoWindow(nullptr);

ImGui::Render();

}

printf("DestroyContext()\n");

ImGui::DestroyContext();

return 0;

}