ImgGui.Button() function is not rendering in my program (.NET 7, ImGui.net ver 1.90.0.1, Veldrid.ImGui ver 5.72.0, ClickableTransparentOverlay ver 9.1.0, SixLabors.ImageSharp ver 3.0.2, Vortice.Mathematics ver 1.7.2)

[DucksterBoo123]

Depending on where I place it, a debug panel is instanced with nothing inside it, or nothing happens and the code executes as if the button isn't there.

if (ImGui.Button("Button"))
{
    slide = 100; //this is assigning a number to an integer variable that is shared by a slider.
}

The button should be below the check box and above the "You chose: person1" text output. This version of the code does not instance the debug panel and just runs was if the function was never there.

[zaafar]

sorry, I can not reproduce the issue locally.
Looks like something wrong on your side.

[blackholeearth]

to run on windows..
here is get started Project.. --- FAQable -README. able

1. make net8 console app . install this versions.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net8.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>
  <ItemGroup>
    <PackageReference Include="ClickableTransparentOverlay" Version="9.1.0" />
    <PackageReference Include="ImGui.NET" Version="1.91.0.1" />
    <PackageReference Include="SixLabors.ImageSharp" Version="3.1.6" />
	<PackageReference Include="Veldrid.ImGui" Version="5.72.0" />
	 <PackageReference Include="Vortice.Mathematics" Version="1.9.3" />
  </ItemGroup>
</Project>

2. here the minimal code,

Note: You can Remove RunOnce_() function its just windows LookAndFell style.

program.cs - paste this.

using System.Runtime.InteropServices;
using console_Imgui;
class Program
{

    [DllImport("kernel32.dll")]
    static extern IntPtr GetConsoleWindow();
    
    static int SW_Hide = 0;
    static int SW_Show = 5;
    static int SW_ShowMinimize = 2;
    static int SW_Minimize = 6;

    [DllImport("User32.dll", CallingConvention = CallingConvention.StdCall, SetLastError = true)]
    [return: MarshalAs(UnmanagedType.Bool)]
    static extern bool ShowWindow([In] IntPtr hWnd, [In] int nCmdShow);


     static void Main(string[] args)
    {
       //hide/minimize consoleWindow on Windows OS
        IntPtr handle = GetConsoleWindow();
        ShowWindow(handle, SW_Minimize );

        Console.WriteLine("Welcome To **ImGuiNET  ** ");
        var v1 = new myView1();
        v1.Start().Wait();
    }

}

2. create new cs file give that name below.

myview1.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using ImGuiNET;
using ClickableTransparentOverlay;
using System.Numerics;
using Veldrid.MetalBindings;
using Veldrid;
using SixLabors.ImageSharp;
using System.Runtime.CompilerServices;

namespace console_Imgui
{

    public static class Ext 
    {
        public static Vector4 ToVector4(this Color color) => (Vector4)color;

    }

    internal class myView1 : Overlay
    {
        bool Exit = false;

        bool ranOnce = false;
        string FontPath = @"C:\Windows\Fonts\arial.ttf";
        Color Color_gray232 = Color.FromRgb(232, 232, 232);
        Color Color_activeTitleBar_gray243 = Color.FromRgb(243, 243, 243);
        Color Color_Button_gray243 = Color.FromRgb(243, 243, 243);
        Color Color_Button_Hover_gray222 = Color.FromRgb(222, 222, 222);
        Color Color_Button_Active_gray199 = Color.FromRgb(199, 199, 199);

        Color Color_red = Color.FromRgb(222 , 0, 0 );
        Color Color_gray222 = Color.FromRgb(222 , 222, 222 );
        Color Color_gray33 = Color.FromRgb(33 , 33, 33 );
        Color Color_gray122 = Color.FromRgb(122 , 122, 122 );
        Color Color_gray99 = Color.FromRgb(99 , 99, 99);
        Color Color_gray144 = Color.FromRgb(144 , 144, 144);
        void RunOnce__Winforms_ColorTheme() 
        {
            if (ranOnce)
                return;

            //win11 style - roundCorners
            var stl1 = ImGui.GetStyle();
            stl1.WindowRounding = 8f;
            stl1.FrameRounding = 6f;
            stl1.Alpha = 1.5f; // 1.0f still makes it transparent.
            //stl1.Colors[(int)ImGuiCol.Border] = Color_red.ToVector4();
            //stl1.Colors[(int)ImGuiCol.WindowBg] = Color_gray232.ToVector4();
            stl1.Colors[(int)ImGuiCol.Text] =  Color_gray33.ToVector4();

          

            //window
            stl1.Colors[(int)ImGuiCol.Border] = Color_gray122.ToVector4();
            stl1.Colors[(int)ImGuiCol.WindowBg] = Color_gray232.ToVector4();
            //titleBar
            stl1.Colors[(int)ImGuiCol.TitleBgActive] = Color_activeTitleBar_gray243.ToVector4();
            stl1.Colors[(int)ImGuiCol.TitleBg] = Color_gray122.ToVector4();
            stl1.Colors[(int)ImGuiCol.TitleBgCollapsed] = Color_gray122.ToVector4();

            //button
            stl1.Colors[(int)ImGuiCol.Button] = Color_Button_gray243.ToVector4();
            stl1.Colors[(int)ImGuiCol.ButtonHovered] = Color_Button_Hover_gray222.ToVector4();
            stl1.Colors[(int)ImGuiCol.ButtonActive] = Color_Button_Active_gray199.ToVector4(); //clicked



            //set Size and Pos - of Next Window
            var wsize = new Vector2((int)(Size.Width * 0.4), (int)(Size.Height * 0.4));
            ImGui.SetNextWindowSize(wsize);
            ImGui.SetNextWindowPos(new Vector2(Size.Width - wsize.X, (int)(Size.Height*0.5 -wsize.Y*0.5) ));
            ImGui.SetNextWindowBgAlpha(1f);


            ranOnce = true;
        }

        string username="" ; 

        protected override void Render()
        {
            Thread.Sleep(25);//40fps max
            ReplaceFont(FontPath, 22, FontGlyphRangeType.English);

            //Console.WriteLine($"ImGui.WindpiScale:{dpiScale}");
            //ImGui.SetWindowFontScale(1.7f); //opens new window??
            RunOnce__Winforms_ColorTheme();
            ImGui.Begin("imguiNET", ImGuiWindowFlags.NoCollapse);
            { 

                ImGui.SetCursorPosX((int)ImGui.GetWindowSize().X - 100);
                var btclicked = ImGui.Button("Exit", new Vector2(100, 30));
                if (btclicked)
                {
                    Environment.Exit(0);
                }

                RepeatAction(2, () => { ImGui.NewLine(); });
                ImGui.Text("hello Imgui. ");
                
                ImGui.NewLine();
                ImGui.Text("1) i want to put border around textEdit.  How can i do it?");
                ImGui.Text("2) i can't type into TextEdit (blue thing).. no chars show up. how to fix it??");
                
                RepeatAction(2, () => { ImGui.NewLine(); });
                ImGui.InputText("##username:" , ref username,(uint)30);
                ImGui.Text($"buf:{username}");

            }
            ImGui.End();

        }

        public static void RepeatAction(int repeatCount, Action action)
        {
            for (int i = 0; i < repeatCount; i++)
                action();
        }




    }


}