DPI issue when calling C# from C++ - C# Discussion Boards

Yohan Bischofberger wrote:
My goal is ...

But what is your question?

My code is failing and not sure how to correct the issue at hand. Please help.

Aspose.PDF {24.7.0} FormDrivenPDF_SpellCheck
BitMiracle.LibTiff.NET {2.4.649} FormDrivenPDF_SpellCheck
DocumentFormat.OpenXml {3.0.2} FormDrivenPDF_SpellCheck
DocumentFormat.OpenXml.Framework {3.0.2} FormDrivenPDF_SpellCheck
DotNetZip {1.16.0} FormDrivenPDF_SpellCheck
Google.Protobuf {3.23.0} FormDrivenPDF_SpellCheck
Grpc {2.46.6} FormDrivenPDF_SpellCheck
Grpc.Core {2.46.6} FormDrivenPDF_SpellCheck
Grpc.Core.Api {2.62.0} FormDrivenPDF_SpellCheck
Grpc.Net.Client {2.62.0} FormDrivenPDF_SpellCheck
Grpc.Net.Common {2.62.0} FormDrivenPDF_SpellCheck
IronPdf {2024.7.8} FormDrivenPDF_SpellCheck
IronPdf.Extensions.ASPX {2023.10.3} FormDrivenPDF_SpellCheck
IronPdf.Native.Chrome.Windows {2024.7.65} FormDrivenPDF_SpellCheck
IronPdf.Slim {2024.7.8} FormDrivenPDF_SpellCheck
IronSoftware.Common {2024.1.7} FormDrivenPDF_SpellCheck
IronSoftware.Native.PdfModel {2024.7.65} FormDrivenPDF_SpellCheck
IronSoftware.System.Drawing {2024.7.2} FormDrivenPDF_SpellCheck
itext {8.0.4} FormDrivenPDF_SpellCheck
itext.commons {8.0.4} FormDrivenPDF_SpellCheck
itext7 {8.0.4} FormDrivenPDF_SpellCheck
Microsoft.Bcl.AsyncInterfaces {8.0.0} FormDrivenPDF_SpellCheck
Microsoft.DotNet.PlatformAbstrac... {2.0.4} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Configuration {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Configurati... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Configurati... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Configurati... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Configurati... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Configurati... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.DependencyI... {8.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.DependencyI... {8.0.1} FormDrivenPDF_SpellCheck
Microsoft.Extensions.DependencyM... {2.0.4} FormDrivenPDF_SpellCheck
Microsoft.Extensions.FileProvide... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.FileProvide... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.FileSystemG... {6.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Logging {8.0.0} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Logging.Abs... {8.0.1} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Options {8.0.2} FormDrivenPDF_SpellCheck
Microsoft.Extensions.Primitives {8.0.0} FormDrivenPDF_SpellCheck
Newtonsoft.Json {13.0.3} FormDrivenPDF_SpellCheck
NHunspell {1.2.5554.16953} FormDrivenPDF_SpellCheck
PDFsharp {6.1.1} FormDrivenPDF_SpellCheck
PdfSharpCore {1.3.65} FormDrivenPDF_SpellCheck
SharpZipLib {1.4.2} FormDrivenPDF_SpellCheck
SixLabors.Fonts {1.0.0} FormDrivenPDF_SpellCheck
SixLabors.ImageSharp {2.1.8} FormDrivenPDF_SpellCheck
SixLabors.ImageSharp.Drawing {1.0.0} FormDrivenPDF_SpellCheck
System.Buffers {4.5.1} FormDrivenPDF_SpellCheck
System.Configuration.Configurati... {6.0.0} FormDrivenPDF_SpellCheck
System.Diagnostics.DiagnosticSource {8.0.1} FormDrivenPDF_SpellCheck
System.Diagnostics.PerformanceCo... {4.5.0} FormDrivenPDF_SpellCheck
System.Drawing.Common {6.0.0} FormDrivenPDF_SpellCheck
System.IO {4.3.0} FormDrivenPDF_SpellCheck
System.Memory {4.5.5} FormDrivenPDF_SpellCheck
System.Net.Http.Json {8.0.0} FormDrivenPDF_SpellCheck
System.Net.Http.WinHttpHandler {7.0.0} FormDrivenPDF_SpellCheck
System.Numerics.Vectors {4.5.0} FormDrivenPDF_SpellCheck
System.Reflection.Emit {4.7.0} FormDrivenPDF_SpellCheck
System.Runtime {4.3.0} FormDrivenPDF_SpellCheck
System.Runtime.CompilerServices.... {6.0.0} FormDrivenPDF_SpellCheck
System.Security.AccessControl {6.0.0} FormDrivenPDF_SpellCheck
System.Security.Cryptography.Alg... {4.3.1} FormDrivenPDF_SpellCheck
System.Security.Cryptography.Enc... {4.3.0} FormDrivenPDF_SpellCheck
System.Security.Cryptography.Pkcs {4.7.0} FormDrivenPDF_SpellCheck
System.Security.Cryptography.Pri... {4.3.0} FormDrivenPDF_SpellCheck
System.Security.Permissions {6.0.0} FormDrivenPDF_SpellCheck
System.Security.Principal.Windows {5.0.0} FormDrivenPDF_SpellCheck
System.Text.Encoding.CodePages {7.0.0} FormDrivenPDF_SpellCheck
System.Text.Encodings.Web {8.0.0} FormDrivenPDF_SpellCheck
System.Text.Json {8.0.3} FormDrivenPDF_SpellCheck
System.Threading.Tasks.Extensions {4.5.4} FormDrivenPDF_SpellCheck
System.ValueTuple {4.5.0} FormDrivenPDF_SpellCheck
Tesseract {5.2.0} FormDrivenPDF_SpellCheck

C#

using System;
using System.Windows.Forms;

namespace PdfSpellChecker
{
static class Program
{
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new PdfSpellChecker.MainForm());
}
}
}
using System;
using System.IO;
using System.Drawing.Imaging;
using PdfSharp.Pdf;
using PdfSharp.Drawing;
using Tesseract;

namespace PdfSpellChecker
{
public class PdfRenderer : IDisposable
{
private readonly string _outputPdfPath;
private readonly TesseractEngine _engine;
private PdfDocument _document;

    public PdfRenderer(string outputPdfPath, TesseractEngine engine)
    {
        _outputPdfPath = outputPdfPath;
        _engine = engine;
        _document = new PdfDocument();
    }

    public void BeginDocument(string title)
    {
        _document.Info.Title = title;
    }

    public void AddPage(Pix image)
    {
        var page = _document.AddPage();
        using (var gfx = XGraphics.FromPdfPage(page))
        {
            using (var ms = new MemoryStream())
            {
                image.Save(ms, System.Drawing.Imaging.ImageFormat.Tiff);
                ms.Position = 0;
                var img = XImage.FromStream(ms);
                gfx.DrawImage(img, 0, 0, page.Width, page.Height);
            }
        }
    }

    public void EndDocument()
    {
        _document.Save(_outputPdfPath);
    }

    public void Dispose()
    {
        _document?.Dispose();
    }
}
}
using System.Collections.Generic;
using iTextSharp.text.pdf.parser;
using iTextSharp.text;

namespace PdfSpellChecker
{
public class MyLocationTextExtractionStrategy : LocationTextExtractionStrategy
{
public class TextRectangle
{
public string Text { get; }
public float Left { get; }
public float Bottom { get; }
public float Right { get; }
public float Top { get; }

        public TextRectangle(float left, float bottom, float right, float top, string text)
        {
            Left = left;
            Bottom = bottom;
            Right = right;
            Top = top;
            Text = text;
        }
    }

    private readonly List<TextRectangle> rects = new List<TextRectangle>();

    public override void RenderText(TextRenderInfo renderInfo)
    {
        base.RenderText(renderInfo);
        var bottomLeft = renderInfo.GetDescentLine().GetStartPoint();
        var topRight = renderInfo.GetAscentLine().GetEndPoint();
        rects.Add(new TextRectangle(bottomLeft[0], bottomLeft[1], topRight[0], topRight[1], renderInfo.GetText()));
    }

    public List<TextRectangle> GetRects()
    {
        return rects;
    }
}
}

C#

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Windows.Forms;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.parser;
using NHunspell;
using Tesseract;
using System.Drawing;

namespace PdfSpellChecker
{
public partial class MainForm : Form
{
private List selectedPdfFiles = new List();
private string customDictionaryPath = string.Empty;
private string userDefinedErrorsPath = string.Empty;
private string revisionNumber = string.Empty;

    public MainForm()
    {
        InitializeComponent();
    }

    private void BrowseButton_Click(object sender, EventArgs e)
    {
        openFileDialogControl.Multiselect = true;
        openFileDialogControl.Filter = "PDF files (*.pdf)|*.pdf";
        if (openFileDialogControl.ShowDialog() == DialogResult.OK)
        {
            selectedPdfFiles = openFileDialogControl.FileNames.ToList();
            UpdateSelectionTextBox();
            AskForNewFileName();
        }
    }

    private void LoadCustomDictionaryButton_Click(object sender, EventArgs e)
    {
        openFileDialogControl.Filter = "Dictionary files (*.dic)|*.dic|All files (*.*)|*.*";
        if (openFileDialogControl.ShowDialog() == DialogResult.OK)
        {
            customDictionaryPath = openFileDialogControl.FileName;
            selectionTextBoxControl.AppendText($"Custom Dictionary Loaded: {customDictionaryPath}\n");
        }
    }

    private void LoadUserDefinedErrorsButton_Click(object sender, EventArgs e)
    {
        openFileDialogControl.Filter = "Text files (*.txt)|*.txt|All files (*.*)|*.*";
        if (openFileDialogControl.ShowDialog() == DialogResult.OK)
        {
            userDefinedErrorsPath = openFileDialogControl.FileName;
            selectionTextBoxControl.AppendText($"User Defined Errors Loaded: {userDefinedErrorsPath}\n");
        }
    }

    private void ProcessButton_Click(object sender, EventArgs e)
    {
        if (selectedPdfFiles.Count == 0)
        {
            MessageBox.Show("Please select PDF files to process.");
            return;
        }

        if (string.IsNullOrEmpty(revisionNumberTextBoxControl.Text))
        {
            MessageBox.Show("Please provide the revision number.");
            return;
        }

        revisionNumber = revisionNumberTextBoxControl.Text;
        EnsureOcrAndSpellCheck();
    }

    private void EnsureOcrAndSpellCheck()
    {
        progressBarControl.Value = 0;
        progressLabelControl.Text = "0%";

        foreach (var pdfFile in selectedPdfFiles)
        {
            string newPdfFileName = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(pdfFile),
                System.IO.Path.GetFileNameWithoutExtension(pdfFile) + "_Checked_" + revisionNumber + "_" + DateTime.Now.ToString("yyyyMMdd") + ".pdf");

            EnsureOcr(pdfFile, newPdfFileName);
            SpellCheckPdf(newPdfFileName);
        }

        MessageBox.Show("Spell checking complete.");
    }

    private void EnsureOcr(string filePath, string newPdfFileName)
    {
        try
        {
            using (var engine = new TesseractEngine(@"./tessdata", "eng", EngineMode.Default))
            using (var renderer = new PdfRenderer(newPdfFileName, engine))
            {
                renderer.BeginDocument(System.IO.Path.GetFileName(filePath));
                using (var pix = Pix.LoadFromFile(filePath))
                {
                    engine.Process(pix);
                    renderer.AddPage(pix);
                }
                renderer.EndDocument();
            }
        }
        catch (Exception ex)
        {
            MessageBox.Show($"OCR failed: {ex.Message}");
        }
    }

    private void SpellCheckPdf(string pdfFilePath)
    {
        using (var reader = new iTextSharp.text.pdf.PdfReader(pdfFilePath))
        {
            var strategy = new iTextSharp.text.pdf.parser.LocationTextExtractionStrategy();
            string currentText = string.Empty;

            for (int i = 1; i <= reader.NumberOfPages; i++)
            {
                currentText += iTextSharp.text.pdf.parser.PdfTextExtractor.GetTextFromPage(reader, i, strategy);
            }

            using (var hunspell = new NHunspell.Hunspell("en_us.aff", "en_us.dic"))
            {
                List<string> words = currentText.Split(' ').ToList();
                foreach (var word in words)
                {
                    if (!hunspell.Spell(word))
                    {
                        var suggestions = hunspell.Suggest(word);
                        if (suggestions.Any())
                        {
                            HighlightSpellingError(pdfFilePath, word);
                            LogSpellingError(word, suggestions);
                        }
                    }
                }
            }
        }
    }

    private void HighlightSpellingError(string pdfFilePath, string word)
    {
        // Highlight the spelling error in the PDF file
    }

    private void LogSpellingError(string word, List<string> suggestions)
    {
        // Log the spelling error with suggestions
    }

    private void AskForNewFileName()
    {
        foreach (var pdfFile in selectedPdfFiles)
        {
            string newPdfFileName = System.IO.Path.Combine(System.IO.Path.GetDirectoryName(pdfFile),
                System.IO.Path.GetFileNameWithoutExtension(pdfFile) + "_Checked_" + DateTime.Now.ToString("yyyyMMdd") + ".pdf");
            saveFileDialogControl.FileName = newPdfFileName;
            saveFileDialogControl.Filter = "PDF files (*.pdf)|*.pdf";
            if (saveFileDialogControl.ShowDialog() == DialogResult.OK)
            {
                newPdfFileName = saveFileDialogControl.FileName;
            }
        }
    }

    private void UpdateSelectionTextBox()
    {
        selectionTextBoxControl.Clear();
        foreach (var file in selectedPdfFiles)
        {
            selectionTextBoxControl.AppendText($"{file}\n");
        }
    }

    private void MainTabControl_DrawItem(object sender, DrawItemEventArgs e)
    {
        var tabPage = this.mainTabControl.TabPages[e.Index];
        var tabRect = this.mainTabControl.GetTabRect(e.Index);
        tabRect.Inflate(-2, -2);
        var isSelected = this.mainTabControl.SelectedIndex == e.Index;

        using (var brush = new SolidBrush(isSelected ? Color.CornflowerBlue : Color.LightGray))
        {
            e.Graphics.FillRectangle(brush, tabRect);
            TextRenderer.DrawText(e.Graphics, tabPage.Text, this.Font, tabRect, tabPage.ForeColor);
        }
    }
}
}

C#

using System;
using System.Windows.Forms;

namespace PdfSpellChecker
{
partial class MainForm
{
private System.ComponentModel.IContainer components = null;
private System.Windows.Forms.TabControl mainTabControl;
private System.Windows.Forms.TabPage browseTabPage;
private System.Windows.Forms.TabPage spellCheckExceptionsTabPage;
private System.Windows.Forms.TabPage userDefinedErrorsTabPage;
private System.Windows.Forms.Button browseButtonControl;
private System.Windows.Forms.Button loadCustomDictionaryButtonControl;
private System.Windows.Forms.Button loadUserDefinedErrorsButtonControl;
private System.Windows.Forms.Button processButtonControl;
private System.Windows.Forms.TextBox selectionTextBoxControl;
private System.Windows.Forms.TextBox spellCheckExceptionsTextBoxControl;
private System.Windows.Forms.TextBox userDefinedErrorsTextBoxControl;
private System.Windows.Forms.ProgressBar progressBarControl;
private System.Windows.Forms.Label progressLabelControl;
private System.Windows.Forms.OpenFileDialog openFileDialogControl;
private System.Windows.Forms.SaveFileDialog saveFileDialogControl;
private System.Windows.Forms.ToolTip toolTipControl;
private System.Windows.Forms.Label revisionNumberLabelControl;
private System.Windows.Forms.TextBox revisionNumberTextBoxControl;
private System.Windows.Forms.Label stepsLabelControl;

    private void InitializeComponent()
    {
        this.components = new System.ComponentModel.Container();
        this.mainTabControl = new System.Windows.Forms.TabControl();
        this.browseTabPage = new System.Windows.Forms.TabPage();
        this.spellCheckExceptionsTabPage = new System.Windows.Forms.TabPage();
        this.userDefinedErrorsTabPage = new System.Windows.Forms.TabPage();
        this.browseButtonControl = new System.Windows.Forms.Button();
        this.loadCustomDictionaryButtonControl = new System.Windows.Forms.Button();
        this.loadUserDefinedErrorsButtonControl = new System.Windows.Forms.Button();
        this.processButtonControl = new System.Windows.Forms.Button();
        this.selectionTextBoxControl = new System.Windows.Forms.TextBox();
        this.spellCheckExceptionsTextBoxControl = new System.Windows.Forms.TextBox();
        this.userDefinedErrorsTextBoxControl = new System.Windows.Forms.TextBox();
        this.progressBarControl = new System.Windows.Forms.ProgressBar();
        this.progressLabelControl = new System.Windows.Forms.Label();
        this.openFileDialogControl = new System.Windows.Forms.OpenFileDialog();
        this.saveFileDialogControl = new System.Windows.Forms.SaveFileDialog();
        this.toolTipControl = new System.Windows.Forms.ToolTip(this.components);
        this.revisionNumberLabelControl = new System.Windows.Forms.Label();
        this.revisionNumberTextBoxControl = new System.Windows.Forms.TextBox();
        this.stepsLabelControl = new System.Windows.Forms.Label();

        this.mainTabControl.SuspendLayout();
        this.browseTabPage.SuspendLayout();
        this.spellCheckExceptionsTabPage.SuspendLayout();
        this.userDefinedErrorsTabPage.SuspendLayout();
        this.SuspendLayout();

        // 
        // mainTabControl
        // 
        this.mainTabControl.Alignment = System.Windows.Forms.TabAlignment.Left;
        this.mainTabControl.Controls.Add(this.browseTabPage);
        this.mainTabControl.Controls.Add(this.spellCheckExceptionsTabPage);
        this.mainTabControl.Controls.Add(this.userDefinedErrorsTabPage);
        this.mainTabControl.Dock = System.Windows.Forms.DockStyle.Left;
        this.mainTabControl.Location = new System.Drawing.Point(0, 0);
        this.mainTabControl.Multiline = true;
        this.mainTabControl.Name = "mainTabControl";
        this.mainTabControl.SelectedIndex = 0;
        this.mainTabControl.Size = new System.Drawing.Size(200, 561);
        this.mainTabControl.TabIndex = 0;
        this.mainTabControl.DrawMode = System.Windows.Forms.TabDrawMode.OwnerDrawFixed;
        this.mainTabControl.SizeMode = System.Windows.Forms.TabSizeMode.Fixed;
        this.mainTabControl.ItemSize = new System.Drawing.Size(30, 100);
        this.mainTabControl.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.MainTabControl_DrawItem);

        // 
        // browseTabPage
        // 
        this.browseTabPage.Controls.Add(this.browseButtonControl);
        this.browseTabPage.Controls.Add(this.loadCustomDictionaryButtonControl);
        this.browseTabPage.Controls.Add(this.loadUserDefinedErrorsButtonControl);
        this.browseTabPage.Controls.Add(this.revisionNumberLabelControl);
        this.browseTabPage.Controls.Add(this.revisionNumberTextBoxControl);
        this.browseTabPage.Controls.Add(this.processButtonControl);
        this.browseTabPage.Controls.Add(this.selectionTextBoxControl);
        this.browseTabPage.Controls.Add(this.progressBarControl);
        this.browseTabPage.Controls.Add(this.progressLabelControl);
        this.browseTabPage.Location = new System.Drawing.Point(104, 4);
        this.browseTabPage.Name = "browseTabPage";
        this.browseTabPage.Padding = new System.Windows.Forms.Padding(3);
        this.browseTabPage.Size = new System.Drawing.Size(672, 553);
        this.browseTabPage.TabIndex = 0;
        this.browseTabPage.Text = "Select PDFs";
        this.browseTabPage.UseVisualStyleBackColor = true;

        // 
        // spellCheckExceptionsTabPage
        // 
        this.spellCheckExceptionsTabPage.Controls.Add(this.spellCheckExceptionsTextBoxControl);
        this.spellCheckExceptionsTabPage.Location = new System.Drawing.Point(104, 4);
        this.spellCheckExceptionsTabPage.Name = "spellCheckExceptionsTabPage";
        this.spellCheckExceptionsTabPage.Padding = new System.Windows.Forms.Padding(3);
        this.spellCheckExceptionsTabPage.Size = new System.Drawing.Size(672, 553);
        this.spellCheckExceptionsTabPage.TabIndex = 1;
        this.spellCheckExceptionsTabPage.Text = "Spell Check Exceptions";
        this.spellCheckExceptionsTabPage.UseVisualStyleBackColor = true;

        // 
        // userDefinedErrorsTabPage
        // 
        this.userDefinedErrorsTabPage.Controls.Add(this.userDefinedErrorsTextBoxControl);
        this.userDefinedErrorsTabPage.Location = new System.Drawing.Point(104, 4);
        this.userDefinedErrorsTabPage.Name = "userDefinedErrorsTabPage";
        this.userDefinedErrorsTabPage.Padding = new System.Windows.Forms.Padding(3);
        this.userDefinedErrorsTabPage.Size = new System.Drawing.Size(672, 553);
        this.userDefinedErrorsTabPage.TabIndex = 2;
        this.userDefinedErrorsTabPage.Text = "User Defined Errors";
        this.userDefinedErrorsTabPage.UseVisualStyleBackColor = true;

        // 
        // browseButtonControl
        // 
        this.browseButtonControl.Location = new System.Drawing.Point(20, 20);
        this.browseButtonControl.Name = "browseButtonControl";
        this.browseButtonControl.Size = new System.Drawing.Size(150, 23);
        this.browseButtonControl.TabIndex = 0;
        this.browseButtonControl.Text = "Browse PDF Files";
        this.toolTipControl.SetToolTip(this.browseButtonControl, "Select PDF files to process.");
        this.browseButtonControl.UseVisualStyleBackColor = true;
        this.browseButtonControl.Click += new System.EventHandler(this.BrowseButton_Click);

        // 
        // loadCustomDictionaryButtonControl
        // 
        this.loadCustomDictionaryButtonControl.Location = new System.Drawing.Point(20, 49);
        this.loadCustomDictionaryButtonControl.Name = "loadCustomDictionaryButtonControl";
        this.loadCustomDictionaryButtonControl.Size = new System.Drawing.Size(150, 23);
        this.loadCustomDictionaryButtonControl.TabIndex = 1;
        this.loadCustomDictionaryButtonControl.Text = "Load Custom Dictionary";
        this.toolTipControl.SetToolTip(this.loadCustomDictionaryButtonControl, "Load custom dictionary for spell checking.");
        this.loadCustomDictionaryButtonControl.UseVisualStyleBackColor = true;
        this.loadCustomDictionaryButtonControl.Click += new System.EventHandler(this.LoadCustomDictionaryButton_Click);

        // 
        // loadUserDefinedErrorsButtonControl
        // 
        this.loadUserDefinedErrorsButtonControl.Location = new System.Drawing.Point(20, 78);
        this.loadUserDefinedErrorsButtonControl.Name = "loadUserDefinedErrorsButtonControl";
        this.loadUserDefinedErrorsButtonControl.Size = new System.Drawing.Size(150, 23);
        this.loadUserDefinedErrorsButtonControl.TabIndex = 2;
        this.loadUserDefinedErrorsButtonControl.Text = "Load User Defined Errors";
        this.toolTipControl.SetToolTip(this.loadUserDefinedErrorsButtonControl, "Load user defined spelling errors.");
        this.loadUserDefinedErrorsButtonControl.UseVisualStyleBackColor = true;
        this.loadUserDefinedErrorsButtonControl.Click += new System.EventHandler(this.LoadUserDefinedErrorsButton_Click);

        // 
        // revisionNumberLabelControl
        // 
        this.revisionNumberLabelControl.AutoSize = true;
        this.revisionNumberLabelControl.Location = new System.Drawing.Point(20, 109);
        this.revisionNumberLabelControl.Name = "revisionNumberLabelControl";
        this.revisionNumberLabelControl.Size = new System.Drawing.Size(91, 13);
        this.revisionNumberLabelControl.TabIndex = 3;
        this.revisionNumberLabelControl.Text = "Revision Number:";

        // 
        // revisionNumberTextBoxControl
        // 
        this.revisionNumberTextBoxControl.Location = new System.Drawing.Point(117, 106);
        this.revisionNumberTextBoxControl.Name = "revisionNumberTextBoxControl";
        this.revisionNumberTextBoxControl.Size = new System.Drawing.Size(100, 20);
        this.revisionNumberTextBoxControl.TabIndex = 4;

        // 
        // processButtonControl
        // 
        this.processButtonControl.Location = new System.Drawing.Point(20, 132);
        this.processButtonControl.Name = "processButtonControl";
        this.processButtonControl.Size = new System.Drawing.Size(150, 23);
        this.processButtonControl.TabIndex = 5;
        this.processButtonControl.Text = "Process Spell Check";
        this.toolTipControl.SetToolTip(this.processButtonControl, "Process the spell check for selected PDFs.");
        this.processButtonControl.UseVisualStyleBackColor = true;
        this.processButtonControl.Click += new System.EventHandler(this.ProcessButton_Click);

        // 
        // selectionTextBoxControl
        // 
        this.selectionTextBoxControl.Location = new System.Drawing.Point(20, 161);
        this.selectionTextBoxControl.Multiline = true;
        this.selectionTextBoxControl.Name = "selectionTextBoxControl";
        this.selectionTextBoxControl.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
        this.selectionTextBoxControl.Size = new System.Drawing.Size(630, 150);
        this.selectionTextBoxControl.TabIndex = 6;
        this.selectionTextBoxControl.ReadOnly = true;
        this.toolTipControl.SetToolTip(this.selectionTextBoxControl, "Preview of selected files.");

        // 
        // progressBarControl
        // 
        this.progressBarControl.Location = new System.Drawing.Point(20, 317);
        this.progressBarControl.Name = "progressBarControl";
        this.progressBarControl.Size = new System.Drawing.Size(630, 23);
        this.progressBarControl.TabIndex = 7;

        // 
        // progressLabelControl
        // 
        this.progressLabelControl.AutoSize = true;
        this.progressLabelControl.Location = new System.Drawing.Point(20, 343);
        this.progressLabelControl.Name = "progressLabelControl";
        this.progressLabelControl.Size = new System.Drawing.Size(24, 13);
        this.progressLabelControl.TabIndex = 8;
        this.progressLabelControl.Text = "0%";

        // 
        // spellCheckExceptionsTextBoxControl
        // 
        this.spellCheckExceptionsTextBoxControl.Location = new System.Drawing.Point(6, 6);
        this.spellCheckExceptionsTextBoxControl.Multiline = true;
        this.spellCheckExceptionsTextBoxControl.Name = "spellCheckExceptionsTextBoxControl";
        this.spellCheckExceptionsTextBoxControl.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
        this.spellCheckExceptionsTextBoxControl.Size = new System.Drawing.Size(660, 541);
        this.spellCheckExceptionsTextBoxControl.TabIndex = 0;
        this.spellCheckExceptionsTextBoxControl.ReadOnly = true;

        // 
        // userDefinedErrorsTextBoxControl
        // 
        this.userDefinedErrorsTextBoxControl.Location = new System.Drawing.Point(6, 6);
        this.userDefinedErrorsTextBoxControl.Multiline = true;
        this.userDefinedErrorsTextBoxControl.Name = "userDefinedErrorsTextBoxControl";
        this.userDefinedErrorsTextBoxControl.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
        this.userDefinedErrorsTextBoxControl.Size = new System.Drawing.Size(660, 541);
        this.userDefinedErrorsTextBoxControl.TabIndex = 0;
        this.userDefinedErrorsTextBoxControl.ReadOnly = true;

        // 
        // stepsLabelControl
        // 
        this.stepsLabelControl.AutoSize = true;
        this.stepsLabelControl.Location = new System.Drawing.Point(240, 20);
        this.stepsLabelControl.Name = "stepsLabelControl";
        this.stepsLabelControl.Size = new System.Drawing.Size(193, 78);
        this.stepsLabelControl.TabIndex = 9;
        this.stepsLabelControl.Text = "Steps:\n1. Select PDF Files for Spell Check\n2. Select Custom Dictionary\n3. Select" +
            " User Defined Errors\n4. Provide Current Revision\n5. Select Process Spell Check";
        this.stepsLabelControl.TextAlign = System.Drawing.ContentAlignment.TopLeft;

        // 
        // MainForm
        // 
        this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
        this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
        this.ClientSize = new System.Drawing.Size(784, 561);
        this.Controls.Add(this.stepsLabelControl);
        this.Controls.Add(this.mainTabControl);
        this.Name = "MainForm";
        this.Text = "PDF Spell Checker";

        this.mainTabControl.ResumeLayout(false);
        this.browseTabPage.ResumeLayout(false);
        this.browseTabPage.PerformLayout();
        this.spellCheckExceptionsTabPage.ResumeLayout(false);
        this.spellCheckExceptionsTabPage.PerformLayout();
        this.userDefinedErrorsTabPage.ResumeLayout(false);
        this.userDefinedErrorsTabPage.PerformLayout();
        this.ResumeLayout(false);
        this.PerformLayout();
    }
}
}

C#

namespace PdfSpellChecker
{
public class TextRectangle
{
public float Left { get; }
public float Bottom { get; }
public float Right { get; }
public float Top { get; }
public string Text { get; }

    public TextRectangle(float left, float bottom, float right, float top, string text)
    {
        Left = left;
        Bottom = bottom;
        Right = right;
        Top = top;
        Text = text;
    }
}
}

modified 25-Jul-24 0:53am.

Dumping a pile of code on us and saying "it don't work" doesn't help anyone: we have no idea where in that code the error might be occurring and no way to run it to find out.

To help normal humans read it, I've edited your question and added code blocks to separate the files and preserve the formatting but you should check that I didn't mess something up - particularly as your indentation is inconsistent!

We can't tell you "do this" and it'll fix it: start by looking at the error message closely as it'll tell you where in that the error occurs. You should expect to get syntax errors every day, probably many times a day while you are coding - we all do regardless of how much experience we have! Sometimes, we misspell a variable, or a keyword; sometimes we forget to close a string or a code block. Sometimes the cat walks over your keyboard and types something really weird. Sometimes we just forget how many parameters a method call needs.

We all make mistakes.

And because we all do it, we all have to fix syntax errors - and it's a lot quicker to learn how and fix them yourself than to wait for someone else to fix them for you! So invest a little time in learning how to read error messages, and how to interpret your code as written in the light of what the compiler is telling you is wrong - it really is trying to be helpful!

So read this: How to Write Code to Solve a Problem, A Beginner's Guide Part 2: Syntax Errors[^] - it should help you next time you get a compilation error!

And spending a little time learning to understand syntax error messages will save you a huge amount of time in future: you waited at least 1/4 hour for Chris to reply, then your email system probably added another 10 minutes or so, plus the time it took you to type up the question once you had found this site and created an account. Chances are that you could have saved a significant chunk of that time if you knew how to read them!

I'm not saying we don't want to help you fix them - sometimes I can't see my own errors because I read what I meant to write - but fixing syntax errors is part of the job, and if you can't do it for yourself people are going to look at you as a bit weird should you get a job in the industry!

"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!

Thank you for the reply.

And yes totally understand the lack of describing the issue and not providing the codes in blocks for each CS form. That is my bad this is not my main career actually far from it as I am a piping designer. I have very little programing knowledge but eager to learn. This is my very 1st attempt at writing C# and thought I had done good just to get to where I was.

I will try and not bother the forum with questions as much as possible. And will look at the reference information you provided. Sniff | :^)

Texas-Tundra wrote:
I will try and not bother the forum with questions as much as possible.

We are fine with questions - provided you show us you have tried - just try to remember that we only get what you type! Laugh | :laugh:

Use code blocks to mark code and it becomes a lot more readable - edit your original question and you'll see what I did; there is a "code" button above the text box which will do it for you.
And show us relevant fragments of you code, not the whole thing - it makes it a lot more likely that someone will read it and try to help.

Hopefully, you are on a course or following a book to learn this stuff rather than random guesses or *shudder* YouTube "tutorials"?

"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!

Well actually I am using the school of Google and ChatGTP. I did way back in 2004 take a semester of .lisp and .vba. But they really do not translate well into this. But I am probably going to look into some online learning courses. Being in Houston there is a lot of training schools and online classes.

Quote:
I am using the school of Google and ChatGTP

Don't do it like that, please.

Trouble is that unless you know something exists, you can't look for it - a course or book presents everything in a structured manner so it's easier to understand, and provides exercises to check your comprehension. It also helps to "cement" the learning - we learn by doing, not by looking - you can watch as much of the Tour de France as you like, it won't teach you to ride a bicycle! Big Grin | :-D

"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!

I'm putting this in C# since it's an issue with initializing NET...

I have a WinForm DLL that is written to be DPI-aware. It is called from both C# and C-based executables. There is an intermediate mixed-mode C / CLR / C# DLL between the executable and the Winform DLL that calls from C to Managed C++ to C# to launch the WinForm DLL. Both the C and the C# exe are also DPI-aware (as appropriate for their language) and both display correctly.

Here's the logic flow.

C or C# exe:
- calls into the intermediate's cdecl entry point using the usual LoadLibrary / GetProcAddress mechanism

intermediate mixed-mode DLL:
- C entry point makes a call to an internal CLR function
- CLR function marshals the parameters, does a gcnew on a C# class and calls its single member function
- C# member function:

C#

Assembly targetAssembly = Assembly.Load (File.ReadAllBytes ("path to winform dll");
Type     startType      = targetAssembly.GetType ("startupNameSpace.startupClass", true);
object   startLib       = startType.InvokeMember ("", BindingFlags.CreateInstance, null, null, new object[0]);
startType.InvokeMember ("startupMethod", BindingFlags.InvokeMethod, null, startLib, new object[] { marshalled parameters } );

WinformDll:
- startupNamespace.startupClass is NOT a form, just a plain C# class
- startupMethod creates a parameterized thread, sets the apartment state to STA and starts the thread passing the marshalled parameters
- the thread instantiates the first WinForm class with the parameters and calls ShowDialog

So, here's the problem.

When run from a C# exe, the DPI logic works correctly. I have a C#exename.exe.config file in the same directory with the exe that contains a "startup" section with my framework version number and a "System.Windows.Forms.ApplicationConfigurationSection" section containg the DpiAwareness key with a value of PerMonitorV2.

When run from a C exe, the WinForm display is incorrect in the exact places where I have my DPI-handling logic. It's obvious from the display that the property DeviceDpi is incorrect for every form. The research I've done leads me to believe that the .NET environment created to run my winform assembly is missing the dpi awareness flag that is set in the config for the C# exe. I've tried adding a config file with all the different name permuations using the C exe name, the intermediate dll name, the Winform dll name, "exe" and "dll". Nothing is picked up by the NET subsystem that is automatically loaded for me.

So the question is -- how do I force the NET subsystem to see a config that sets the DPI state?

Judy

Also, I have tried the solution to fix an incorrect DeviceDpi when an exe is first run on a secondary monitor (in the form's OnHandleCreated, call GetDpiForWindow, scale it, resize the form, and send a WM_DPICHANGED with that retrieved dpi). Putting this in the first form displayed does not fix the incorrect display.

Be wary of strong drink. It can make you shoot at tax collectors - and miss.
Lazarus Long, "Time Enough For Love" by Robert A. Heinlein

.NET Framework or .NET Core?

The difficult we do right away...
...the impossible takes slightly longer.

Framework 4.7.2

Be wary of strong drink. It can make you shoot at tax collectors - and miss.
Lazarus Long, "Time Enough For Love" by Robert A. Heinlein

I'm writing a program that allows users to send commands to various serial devices. Most of the commands are "Button" orientated. By that I mean they press a button and everything is done for them; however I have a textbox that allows them to type in manual commands should there be something I don't have a button for that they really want to happen. I'm thinking about logging what commands they are typing in order to improve my program so that I can add other buttons that will help make life easier all. I'm wondering if there's a way to do that possibly on Github so that I can retrieve basically over web. Or if there's a better way to do it? I'm currently working in Csharp/WPF. I'm also thinking about logging some try/catch handler errors, so that I can analyze software bugs too, but I'm not too bothered about that right now.

First of course be aware of your user base. You are collecting information about them by doing that and there might be customer relation problems with that. And legal ones as well.

Other than that all your are doing is collecting data remotely from an application. There are many ways to do that.

geomeo123 wrote:
if there's a way to do that possibly on Github

As in that there is a library for that? Or that you want the data stored on Github? For the first I am certain there is. As for the second that wouldn't be my choice.

geomeo123 wrote:
thinking about logging some try/catch handler errors

You should create a code API that logs the following
- location. File/method.
- Text that describes what it is
- Additional information. This would be where you put exceptions, including stack traces.

Then you call that where ever you want.

There are specific libraries that provide 'logging'. In C# I have used log4net and Nlog.

That provides the API that I mentioned ready to go. It does not however provide the 'destination'. I know you can find addins to log to databases. I suspect others.

Another problem you will have is that since your application is remoting pushing data then someone might do something malicious to abuse your system. Basically you need to figure they will attempt this. So at a minimum you need to provide credentials. Although that probably is not enough. You might want to throttle as well so if they hack your app they can't just start blasting away.

There are services that provide APIs that collect data also.

jschell wrote:
There are many ways to do that

If I may, but you didn't mention what any of them are. I too have been asking myself this question and I'm very interested to know what other people think.

The difficult we do right away...
...the impossible takes slightly longer.

I don't think he knows. Think we might have to go to a university and earn a degree to figure it out.

Richard Andrew x64 wrote:
but you didn't mention what any of them are.

Some of them:
To a SQL Database
To a no-SQL Database
To an event hub
To flat files
To a service that collects metrics.
To a custom server API.
To Syslog
To Azure OpenAPI
To AWS OpenSearch

Have you looked into Log4net Tutorial for .NET Logging: 14 Best Practices and Examples[^]? It may not offer everything you want but is quite popular in the .NET world.

Ah, Log4Net. From the glory days of .NET, as I moved from (work) place to place everyone used it. Seems to have lost favour in the Core world, and been replaced by something more standardised and flexible, but not as to-the-point Frown | :(

Two line logging, whoever thought that was a good idea?

Regards,
Rob Philpott.

Rob Philpott wrote:
and been replaced by something more standardised and flexible,

What exactly?

I use Winform and I use Entity Framework to communicate with the database and I use the MSSQL database and when I want to connect the SQL database to the Visual Studio program, the table Those that exist in my database are not present as classes in the Visual Studio program

If you're talking about using the Data Sources tab in Visual Studio to connect to the database, and you're using Entity Framework, you're doing it wrong. The Visual Studio designers will not create classes for Entity Framework. You have to write the classes yourself.

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.
Dave Kreskowiak

If I connect the data base to Visual Studio and create my own classes, will Visual Studio connect my classes to the tables in the data base?

It appears you have no idea what Entity Framework is or how it works, correct?

Visual Studio isn't going to do anything for you when using Entity Framework, nor should you rely on it. Using the designers in Visual Studio hides a bunch of details from you that makes learning how to interact with databases more difficult to learn. You don't need anything from Visual Studio to work with databases.

Asking questions is a skill
CodeProject Forum Guidelines
Google: C# How to debug code
Seriously, go read these articles.
Dave Kreskowiak

Downloads: Generic Database Access[^]
This a HUGE Codeproject article which, from the looks of things (quick scroll through the .zip content), is likely to give out many C# programming secrets wrt SQL Server (even) with no further sacrifice of time searching on your part.

Generic Database Access[^]

I have a strange issue I am experiencing with a web app. Typically, the user right clicks on the web page and click Print. He views the document in preview and then decides how to print it.

On Chrome, everything works fine

On Microsoft Edge, It only works if you right click the web page at the top of the page. If you scroll down to the bottom of the page before you right click and select print, the printed document is not formatted properly. The print preview is also not formatted properly. See screen shots below:

On Chrome - (User right click from bottom of page)

You can see the title of the app, title of the report, report run date etc

Report Issue - Chrome.PNG - Google Drive[^]

On MS Edge - (User right click from bottom of page)

The preview starts at some random data as shown below. Title of the app, title of report etc are not shown in the preview and printed version.

Report Issue - MS Edge.PNG - Google Drive[^]

As you can see from the above screen shots, Chrome is displayed properly. MS Edge only displays like that if I right click on the web page from the top of the page without scrolling down

Below is my code sample:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Physician Activity Report</title>
    <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.min.css" />
    <link href="~/lib/font-awesome/css/all.css" rel="stylesheet" />
    <link href="~/css/mycss.css" rel="stylesheet" media="print" />
</head>

Below is the content of mycss.css

CSS

@media print {
    .col-md-1, .col-md-2, .col-md-3, .col-md-4, .col-md-5, .col-md-6,
    .col-md-7, .col-md-8, .col-md-9, .col-md-10, .col-md-11, .col-md-12 {
        float: left;
    }

    .col-md-12 {
        width: 100%;
    }

    .col-md-11 {
        width: 91.66666666666666%;
    }

    .col-md-10 {
        width: 83.33333333333334%;
    }

    .col-md-9 {
        width: 75%;
    }

    .col-md-8 {
        width: 66.66666666666666%;
    }

    .col-md-7 {
        width: 58.333333333333336%;
    }

    .col-md-6 {
        width: 50%;
    }

    .col-md-5 {
        width: 41.66666666666667%;
    }

    .col-md-4 {
        width: 33.33333333333333%;
    }

    .col-md-3 {
        width: 25%;
    }

    .col-md-2 {
        width: 16.666666666666664%;
    }

    .col-md-1 {
        width: 8.333333333333332%;
    }
}

h5 {
    color: darkblue;
}

What can I do to get this to work properly on MS Edge ? Is it a CSS issue ?

No idea what the answer is but I did upvote the question because someone down voted it and without explanation. Seems like a reasonable question to me.

Perhaps they wanted you to post in a different forum but didn't feel like explaining that.