dependencies/third-party/imgui/src/examples/example_null/main.cpp

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// dear imgui: null/dummy 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 = NULL;
    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(NULL);
 
        ImGui::Render();
    }
 
    printf("DestroyContext()\n");
    ImGui::DestroyContext();
    return 0;
}