【内部资料】C#窗体打开ppt和pdf文件

【内部资料】C#窗体打开ppt和pdf文件

using Microsoft.Office.Interop.PowerPoint;
using System;
using System.Diagnostics;
using System.IO;
using System.Windows.Forms;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using Microsoft.Office.Core;
using PDFiumCore;
using System.Drawing.Imaging;


namespace PPTorPDF
{
    public partial class MainForm : Form
    {
        private PowerPoint.Application pptApplication;
        private PowerPoint.Presentation pptPresentation;

        private FpdfDocumentT document;
        private int pageCount;
        private int pageIndex;
        private string documentstr;



        public MainForm()
        {
            InitializeComponent();
            InitializePowerPoint();
            fpdfview.FPDF_InitLibrary();

            fpdfview.FPDF_InitLibrary();
            // document = fpdfview.FPDF_LoadDocument("sample.pdf", null);

            // 订阅鼠标滚轮事件
            this.MouseWheel += MainForm_MouseWheel;




        }

        private void InitializePowerPoint()
        {
            // pptApplication = new PowerPoint.Application();
            pptApplication = new PowerPoint.Application();

        }

        private void openButton_Click(object sender, EventArgs e)
        {


            OpenFileDialog openFileDialog = new OpenFileDialog
            {
                Filter = "PDF Files|*.pdf;*.PDF",
                Title = "Select a PDF File"
            };

            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
               
                documentstr = openFileDialog.FileName;
                document = fpdfview.FPDF_LoadDocument(openFileDialog.FileName, null);
                //using var fs = File.OpenRead(openFileDialog.FileName);
                //var fileBytes = new byte[fs.Length];
                //using var ms = new MemoryStream(fileBytes);

                // Copy file the underlying byte stream.
                //fs.CopyTo(ms);

                pageCount = fpdfview.FPDF_GetPageCount(document);
                pageIndex = 0;

                ShowPage();



            }




        }

        //private void OpenPresentation(string filePath)
        //{
        //    try
        //    {

        //        pptPresentation = pptApplication.Presentations.Open(filePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse);

        //        pptPresentation.SlideShowSettings.Run();
        //    }
        //    catch (Exception ex)
        //    {
        //        MessageBox.Show($"Error opening PowerPoint presentation: {ex.Message}",
        //            "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
        //    }
        //}
        private void OpenPresentation(string filePath)
        {
            try
            {
                pptPresentation = pptApplication.Presentations.Open(filePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse);

                // 获取幻灯片范围
                PowerPoint.Slides slides = pptPresentation.Slides;

                // 设置幻灯片范围，例如，从第一张到最后一张
                int startingSlideIndex = 1;
                int endingSlideIndex = slides.Count;

                // 设置 SlideShowSettings
                PowerPoint.SlideShowSettings slideShowSettings = pptPresentation.SlideShowSettings;
                slideShowSettings.StartingSlide = startingSlideIndex;
                slideShowSettings.EndingSlide = endingSlideIndex;
                slideShowSettings.RangeType = PowerPoint.PpSlideShowRangeType.ppShowSlideRange;




                // 运行幻灯片播放
                slideShowSettings.Run();
            }
            catch (Exception ex)
            {
                MessageBox.Show($"Error opening PowerPoint presentation: {ex.Message}",
                    "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }


        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            ReleasePowerPoint();
        }

        private void ReleasePowerPoint()
        {
            if (pptPresentation != null)
            {
                pptPresentation.Close();
                pptPresentation = null;
            }

            if (pptApplication != null)
            {
                pptApplication.Quit();
                pptApplication = null;
            }
        }

        private void OpenPDFFile(string filePath)
        {
            if (System.IO.File.Exists(filePath))
            {
                Process.Start(new ProcessStartInfo
                {
                    FileName = filePath,
                    UseShellExecute = true
                });
            }
            else
            {
                MessageBox.Show("File not found: " + filePath, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void ShowPage()
        {
            // 获取页面
            var page = fpdfview.FPDF_LoadPage(document, pageIndex);

            // 获取页面的图像
            var width = (int)fpdfview.FPDF_GetPageWidth(page);
            var height = (int)fpdfview.FPDF_GetPageHeight(page);

            var bitmap = fpdfview.FPDFBitmapCreate(width, height, 0);
            fpdfview.FPDFBitmapFillRect(bitmap, 0, 0, width, height, 0xFFFFFFFF);
            fpdfview.FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0);

            var stride = fpdfview.FPDFBitmapGetStride(bitmap);
            var scan0 = fpdfview.FPDFBitmapGetBuffer(bitmap);

            var image = new Bitmap(width, height, stride, PixelFormat.Format32bppArgb, scan0);

            // 显示页面
            pictureBox1.Image = image;
        }

        private void btnPrev_Click(object sender, EventArgs e)
        {
            if (pageIndex > 0)
            {
                pageIndex--;
                ShowPage();
            }
        }

        private void btnNext_Click(object sender, EventArgs e)
        {
            if (pageIndex < pageCount - 1)
            {
                pageIndex++;
                ShowPage();
            }
        }

        private void MainForm_FormClosed(object sender, FormClosedEventArgs e)
        {
            fpdfview.FPDF_DestroyLibrary();
        }

        private void panel2_SizeChanged(object sender, EventArgs e)
        {
            // 计算新的按钮大小和位置
            // btnNext.Width = panel2.Width / 2;  // 适当的计算方式
            //  btnNext.Height = panel2.Height / 2;  // 适当的计算方式
            //  btnNext.Location = new System.Drawing.Point((panel2.Width - btnNext.Width) / 2, (panel2.Height - btnNext.Height) / 2);
        }

        private void openPPTButton_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog = new OpenFileDialog
            {
                Filter = "PowerPoint Files|*.ppt;*.pptx",
                Title = "Select a PowerPoint File"
            };

            if (openFileDialog.ShowDialog() == DialogResult.OK)
            {
                OpenPresentation(openFileDialog.FileName);
               



            }
        }

        private void MainForm_MouseWheel(object sender, MouseEventArgs e)
        {
            // 判断滚轮的方向，执行翻页操作
            if (e.Delta > 0 && pageIndex > 0)
            {
                pageIndex--;
                ShowPage();
            }
            else if (e.Delta < 0 && pageIndex < pageCount - 1)
            {
                pageIndex++;
                ShowPage();
            }
        }
    }
}